WATTS LFM114-1 Series Rate-of-Flow Control Valve with Solenoid On-Off Instruction Manual

WATTS LFM114-1 Series Rate-of-Flow Control Valve with Solenoid On-Off

WARNING
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information can result in death, serious personal injury, property damage, or damage to the equipment.
Keep this Manual for future reference.

• Local building or plumbing codes may require modifications to the information provided. You are required to consult the local building and plumbing codes prior to installation. If the information provided here is not consistent with local building or plumbing codes, the local codes should be followed. This product must be installed by a licensed contractor in accordance with local codes and ordinances.
• Need for Periodic Inspection/Maintenance: This product must be tested periodically in compliance with local codes,but at least once per year or more as service conditions warrant. All products must be retested once maintenance has been performed. Corrosive water conditions and/or unauthorized adjustments or repair could render the product ineffective for the service intended. Regular checking and cleaning of the product’s internal and external components helps assure maximum life and proper product function.

NOTICE
For Australia and New Zealand: Pipeline strainers should be installed between the upstream shutoff valve and the inlet of the backflow preventer.
It’s important that this device be tested periodically in compliance with local codes, but at least once per year or more as service conditions warrant. If installed on a fire sprinkler system, all mechanical checks, such as alarm checks and backflow preventers, should be flow tested and inspected internally in accordance with NFPA 13 and NFPA 25.

Engineering Specifications

Series LFM114-1

Rate-of-Flow Control Valve with Solenoid On-Off
Full Port Ductile Iron Single Chamber Valve

Features

• Throttles to maintain constant rate-of-flow
• Solenoid (On-Off) Feature provides electrical override of valve function
• Adjustable Closing Speed
• Orifice Plate Assembly is remote mounted (field installed)
• Rate-of-Flow setpoint is adjustable

Standard Components

1. Main Valve (M100 – Single Chamber)
2. Rate-of-Flow Control
3. 2-Way Solenoid
4. Adjustable Closing Speed
5. Orifice Plate Assembly
   X – Isolation Cocks

Options and Accessories

• { FC – Flo-Clean Strainer
• { Y – Y-Strainer (Replaces Flo-Clean)
• { AOS – Adjustable Opening Speed
• { P – Position Indicator
• { L – Limit Switch

Operation

The Rate-of-Flow Control ACV with Solenoid (On-Off) Feature is designed to automatically limit flow rate to a constant, adjustable, maximum, and open, allowing flow control action, or close drip-tight as commanded by the Solenoid Pilot. It is controlled by a normally open, differential control pilot designed to: 1) Open (allowing fluid out of the main valve cover chamber) when the differential pressure across the orifice plate is below its adjustable set point, and, 2) Close (allowing fluid to fill the main valve cover chamber) when the differential pressure across the orifice plate is above its adjustable set point. A decrease in differential pressure causes the valve to modulate towards an open position, increasing flow rate. An increase in differential pressure causes the valve to modulate towards a closed position, decreasing flow rate.
The Solenoid Pilot will either open to allow regulating action, or close the valve drip-tight when energized. Specify energize to open or close the Main Valve and voltage PRIOR to ordering.
The Orifice Plate Assembly should be installed three to five pipe diameters downstream of the Rate-of-Flow Valve, and field connected with 3/8″ minimum copper tubing in accordance with factory piping schematic.

Please specify desired flow rate prior to ordering.

• The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

NOTICE
The information contained herein is not intended to replace the full product installation and safety information available or the experi-ence of a trained product installer. You are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product.

ACV Schematic – Series LFM114-1

M Series Basic Valves
Rate-of-Flow Control Valve with Solenoid On-Off Full Port Ductile Iron Single Chamber Basic Valve

This Watts Automatic Control Valve (ACV) is a full port, single chamber basic valve that incorporates a one-piece disc and diaphragm assembly. This assembly is the only moving part within the valve allowing it to open, close, or modulate as commanded by the pilot control system.
Watts ACV Main Valves are Lead Free. The Watts ACV piloting system contains Lead-Free* components, ensuring all of our configurations are Lead-Free compliant.

Globe Pattern Single Chamber Basic Valve (M100) Angle Pattern Single Chamber Basic Valve (M1100)

Standard Materials

• Body and Cover: Ductile Iron ASTM A536
• Coating: NSF Listed Fusion Bonded Epoxy
• Lined and Coated
• Trim: 316 Stainless Steel
• Elastomers: Buna-N (standard)
• EPDM (optional)
• Viton™ (optional)
• Nut, Spring and Stem: Stainless Steel
• Anti-Scale (Optional): Xylan Coated Stem and Seat

Viton™ is a trademark of The Chemours Company FC, LLC

Basic Valve Body Options

Operating Pressure

• Threaded = 400psi (27.6 bar)
• 150# Flanged = 250psi (17.2 bar)
• 300# Flanged = 400psi (27.6 bar)
• Grooved End = 400psi (27.6 bar)

Operating Temperature

• Buna-N: 160°F (71°C) Maximum
• EPDM: 300°F (140°C) Maximum
• Viton™: 250°F (121°C) Maximum
• Epoxy Coating**: 225°F (107°C) Maximum
  Valves can be provided without internal epoxy coating consult factory

Flow Data

• Maximum continuous flow based on velocity of 20 ft. per second.

• Maximum intermittent flow based on velocity of 25 ft. per second.

• Minimum flow rates based on a 20-40 psi pressure drop.

• The Cv Factor of a value is the flow rate in US GPM at 60°F that willcause a 1psi drop in pressure.

• Cv factor can be used in the following equations to determine Flow (Q) and Pressure Drop (ΔP):
  Q (Flow) = Cv√ΔP ΔP (Pressure Drop) = (Q/Cv)2

• The Cv factors stated are based upon a fully open valve.

• Many factors should be considered in sizing control valves including inlet pressure, outlet pressure and flow rates.

• For sizing questions including cavitation, analysis consult Watts with system details.

Valve Cover Chamber Capacity

Valve Travel

Basic Valve

Washer

| ASTM A570 Gr.33 Zinc Plated Steel
5| Body| ASTM A536 65-45-12 Epoxy Coated Ductile Iron
6| Spring| ASTM A276 302 Stainless Steel
7| Stem Nut| ASTM A276 304 Stainless Steel
8| Lock Washer| ASTM A276 304 Stainless Steel
9| Stem Washer| ASTM A276 304 Stainless Steel
10| Diaphragm Washer| ASTM A536 65-45-12 Epoxy Coated Ductile Iron
11| Diaphragm| Buna-N (Nitrile)
12| Disc Retainer| ASTM A536 65-45-12 Epoxy Coated Ductile Iron
13| Seat Disc| Buna-N (Nitrile)
14| Spacer Washer x5| NY300 Fiber
15| Disc Guide| ASTM A743 CF8M (316) Stainless Steel
16| Shaft| ASTM A276 304 Stainless Steel
17| Seat Ring| ASTM A743 CF8M (316) Stainless Steel
17A| Seat Screw (8″ and Larger)| ASTM A276 304 Stainless Steel
18| Seat Gasket*| Buna-N (Nitrile)

Contained in Main Valve Repair Kit
Note: 6 inch and Smaller Valves, Seat Ring is threaded

NOTICE

Installation: If unit is installed in any orientation other than horizontal (cover up) OR extreme space constraints exist, consult customer service prior to or at the time of order.

Dimensions

Flanged and Threaded Dimensions

Valve Size| Globe Thread| Globe 150#| Globe 300#| Cover To Center| Angle Thread| Angle 150#| Angle 300#| Angle Thread| Angle 150#| Angle 300#| Port Size NPT| Port Size NPT| Shipping Weights*
---|---|---|---|---|---|---|---|---|---|---|---|---|---
 | A| B| C| D| E| F| G| H| I| J| K| L|
in.| in.| mm| in.| mm| in.| mm| in.| mm| in.| mm| in.| mm| in.| mm| in.| mm| in.| mm| in.| mm| in.| in.| lbs.| kgs.
11/4| 71/4| 184|  |  |  |  | 51/2| 140|  |  |  |  |  |  |  |  |  |  |  |  | 3/8| 1/4| 20| 9
11/2| 71/4| 184| 81/2| 216|  |  | 51/2| 140| 31/4| 83|  |  |  |  | 17/8| 48| |  |  |  | 3/8| 1/4| 25| 11
2| 93/8| 238| 93/8| 238| 10| 254| 63/4| 171| 43/4| 120| 43/4| 121| 5| 127| 31/4| 83| 31/4| 83| 31/2| 89| 3/8| 1/2| 40| 18
21/2| 11| 279| 11| 279| 115/8| 295| 71/2| 191| 51/2| 140| 51/2| 140| 57/8| 149| 4| 102| 4| 102| 45/16| 110| 1/2| 1/2| 65| 29
3| 121/2| 318| 12| 305| 131/4| 337| 81/4| 210| 61/4| 159| 6| 152| 63/8| 162| 41/2| 114| 4| 102| 43/8| 111| 1/2| 1/2| 95| 43
4|  |  | 15| 381| 155/8| 397| 105/8| 270|  |  | 71/2| 191| 77/8| 200|  |  | 5| 127| 55/16| 135| 3/4| 3/4| 190| 86
6|  |  | 20| 508| 21| 533| 13| 330|  |  | 10| 254| 101/2| 267|  |  | 6| 152| 61/2| 165| 3/4| 3/4| 320| 145
8|  |  | 253/8| 645| 263/8| 670| 16| 406|  |  | 123/4| 324| 131/4| 337|  |  | 8| 203| 81/2| 216| 1| 1| 650| 295
10|  |  | 293/4| 756| 311/8| 791| 17| 430|  |  | 147/8| 378| 159/16| 395|  | | 85/8| 219| 95/16| 237| 1| 1| 940| 426
12|  |  | 34| 864| 351/2| 902| 207/8| 530|  |  | 17| 432| 173/4| 451|  |  | 133/4| 349| 141/2| 368| 1| 11/4| 1500| 680
14|  |  | 39| 991| 401/2| 1029| 241/4| 616|  |  |  |  |  |  |  |  |  |  |  | | 1| 11/2| 1675| 760
16|  |  | 413/8| 1051| 431/2| 1105| 251/4| 640|  |  |  |  |  |  |  |  |  |  | |  | 1| 2| 3100| 1406

Grooved End Dimensions

Valve Size| Globe Grooved| Cover To Center| Angle Grooved| Angle Grooved| Port Size (npt)| Port Size (npt)| Shipping Weights*
---|---|---|---|---|---|---|---
 | A| B| C| D| E| F|  |
in.| in.| mm| in.| mm| in.| mm| in.| mm| in.| in.| lbs.| kgs.
11/4| 81/2| 216| 51/2| 140| 41/4| 108| 31/4| 83| 3/8| 1/4| 25| 11
11/2| 81/2| 216| 51/2| 140| 41/4| 108| 31/4| 83| 3/8| 1/4| 25| 11
2| 9| 229| 61/2| 165| 43/4| 121| 31/4| 83| 3/8| 1/2| 40| 18
21⁄2| 11| 279| 71/2| 191| 51⁄2| 140| 4| 102| 1/2| 1/2| 65| 29
3| 121⁄2| 318| 81/4| 210| 6| 152| 41/4| 108| 1/2| 1/2| 95| 43
4| 15| 381| 105/8| 270| 71/2| 191| 5| 127| 3/4| 3/4| 190| 86
6| 20| 508| 133/8| 340|  |  |  |  | 3/4| 3/4| 320| 145
8| 253⁄8| 645| 16| 406|  |  |  |  | 1| 1| 650| 295

ACV Standard Components – Series LFM114-1

Model LFCP14-1
Rate-of-Flow Pilot
Size: 3/8″ NPT

The Model LFCP14-1 is a direct acting, diaphragm actuated Pilot that senses and responds to changes in a differential pressure signal. The differential pressure signal is usually created by an orifice plate located inline either upstream or downstream of the Main Valve. The Pilot has two sensing chambers, one above and one below the diaphragm. The “low” pressure signal is sensed above the diaphragm, and the “high” pressure signal is sensed below the diaphragm.
An increase in flow rate causes the differential pressure across the orifice plate to increase. The Pilot modulates toward a closed position when the differential pressure signal increases above the control setpoint, causing the Main Valve to modulate toward a closed position, decreasing flow rate.
A decrease in flow rate causes the differential pressure across the orifice plate to decrease. The Pilot modulates toward an open position when the differential pressure signal decreases below the control setpoint, causing the Main Valve to modulate toward an open position, increasing flow rate. Turning the adjustment screw clockwise raises the control setpoint, increasing flow rate. Turning the adjustment screw counterclockwise lowers the control setpoint, decreasing flow rate.

The LFCP14-1 is equipped with one 3/8″ NPT inlet and two outlet ports for ease of installation, and two 1/8″ NPT sensing ports. The 1/8″ sensing port above the diaphragm is used to monitor the “low pressure” differential signal, and the sensing port below the diaphragm is used to monitor the “high pressure” differential signal.

Specifications

• Body Material: Lead Free Copper Silicon Alloy
  CF8M (316) Stainless Steel (Optional)

• Seat: 316 Stainless Steel

• Elastomers: Buna-N (standard)
  Viton™ (optional)
  EPDM (optional)

• Inlet Pressure Rating: 400psi (27.6 bar) maximum

Viton™ is a trademark of The Chemours Company FC, LLC

The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

Model LFCP14-1
Rate-of-Flow Pilot

*Included in Repair Kit

Model S2W
2-Way Solenoid
Size: 1/8″ – 1/2″ NPT
Model S2W are pilot system 2-way solenoids. The solenoids can control valves independently or in combination with other control circuit pilots or accessories. Product is available with a wide range of options including: voltage (24VDC , 24VAC or 120VAC), operation(energize to open or closed) and a range of enclosures (general service to watertight to explosion proof).

Specifications

• Body Material: Brass (standard)
• Stainless Steel (optional)
• Elastomers: Nitrile (standard)
• EPDM (optional)
• Viton™ (optional)
• Voltage: 24VDC, 24VAC or 120VAC
• Enclosure: General Purpose – NEMA 4 (standard)
• Explosion Proof – NEMA 6, 6P, 7, 9 (optional)
• Action: Normally Open or Normally Closed**

Solenoid Action only. Main valve action (energize-to-open or energize-to- close) is dependent on the particulars of the pilot system.
Brass solenoids when used as part of a pilot system including an ACV main valve comply with the Lead Free Law.

Model LFFC
Flow Control
Size: ½” NPT
A Flow Control is an adjustable device used for tuning valve performance.
It can be installed to either control the opening or closing the speed of the automatic control main valve. When the flow is in the direction of the needle the flow control is an adjustable restriction. In the free flow direction the seat moves out of the flow path to all unrestricted flow.

Specifications

• Size: 1/2″ NPT
• Body Material: Lead Free Brass
• Stainless Steel (optional)
• Seat: Lead Free Brass
• Needle: Stainless Steel (304)
• Elastomers: Buna-N (standard)
  The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

Model BV
Ball Valve
Size: ¼” – 1″ NPT
Model BV Ball Valves are used in pilot lines to provide a positive shutoff in any override or maintenance situation for simple troubleshooting. This 2-piece, full port valve features: bottom-loaded stems, PTFE seats and packing.

Specifications

• Standard Material: Copper Silicon Alloy Body and Adaptor
  Chrome Plated Ball

• Optional Material: Stainless Steel Housing, Body and Adaptor
  Stainless Steel Ball

• Pressure Rating: 600psi (41 bar) Non Shock

• Temp Rating: -40°F – 400°F

• The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

ACV Options and Accessories – Series LFM114-1

Model LF60
Flo-Clean Strainer
Size: 1/4″ – 3/4″ NPT
Model LF60 Flo-Clean Strainers are used to filter the fluid passing through the pilot circuit, and provide protection to pilot circuit speed controls and pilots. It is installed in the inlet body port of the Main Valve, exposing the strainer element to main line flow.
The currents and flow across the screen create a self-scouring effect, cleaning the filter element.

Valve inlet with Filter installed

Specifications

• Body Material: Lead Free Brass (standard)
  Stainless Steel (optional)

• Pressure Rating: 400psi (27.6 bar)

• Filter Element: Monel

• Screen Mesh: 40 Mesh (standard)

Male Pipe Thread

in.

| Female Pipe Thread

in.

1/4| 1/8
3/8| 1/4
1/2| 3/8

The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

Model LF60-1
Y-Pattern Strainer
Size: 1/4″ – 3/4″ NPT
Model LF60-1 Y-Pattern Strainers are used to filter the fluid passing through the pilot circuit, and provide protection to pilot circuit speed controls and pilots. The filter element can be accessed for cleaning by removing the clean- out cap, or may be cleaned by installing an optional “blow-down” ball valve.

Dimensions

in.

| A| B|

lbs.

|

kgs.

in| mm| in| mm
1/4| 211/16| 68| 111/16| 43| 1.7| 0.77
3/8| 211/16| 68| 111/16| 43| 1.7| 0.77
1/2| 3| 76| 2| 51| 1.7| 0.77
3/4| 35/16| 84| 25/16| 59| 1.7| 0.77

Specifications

• Body Material: Lead Free Copper Silicon Alloy
  CF8M (316) Stainless Steel (optional)

• Retainer Cap: Lead Free Copper Silicon Alloy
  Cap Gasket: EPDM

• Pressure Rating: 400psi (27.6 bar)

• Filter Element: 304 Stainless Steel

• Mesh Options: 60 Mesh (standard)
  100 Mesh (optional)

The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

Model 50
Position Indicator
When specified as an option on a Control Valve, the Model 50 Position Indicator is installed in the topmost cover port of the Main Valve and allows for visual indication of valve position. The Model 50 is also very useful during valve start-up and troubleshooting procedures.
A stainless steel indicating rod threads into the tapped portion of the Main Valve stem and moves inside of a cylindrical Pyrex sight tube. The indicating rod travels up and down, following Main Valve stem movement. The housing protects the sight tube and indicating rod, and allows visibility on two sides. The screw driver operated test cock installed on the top of the Model 50 housing provides a controlled method of removal of air from the cover chamber during start-up or troubleshooting of the Main Valve.

Specifications

• Standard Material: Stainless Steel Housing and Body
  Stainless Steel Indicating Rod
  Lead Free Test Cock
  Pyrex Sight Tube

• Optional Material: Stainless Steel Test Cock

• Pressure Rating: 400psi (27.6 bar)

The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

Dimensions

Model 51
Single Limit Switch

The Model 51 Single Limit Switch provides visual indication of valve position, as well as remote electrical indication of “valve open” or “valve closed”. The single pole double throw Micro-Switch can be connected to open or close an electrical circuit when the valve opens or closes.
The adjustable collar is normally set to contact the trip arm when the main valve is closed. The collar can be positioned on the stem by loosening the set-screw to actuate the switch at the desired point of valve travel.

Parts List

Specifications

• Body Material: Stainless Steel

• Elastomers: Buna-N (standard)
  EPDM (optional)
  Viton™ (optional)

• Enclosure: NEMA 1, 3, 4 and 13 General Purpose (standard)
  NEMA 1,7 and 9 Explosion Proof (optional)

• Electrical: Form C SPDT Switch
  15 amp. 125, 250 or 480 VAC
  ½ amp. 125 VDC
  ¼ amp. 250 VDC
  ½” Conduit Connection

Viton™ is a trademark of The Chemours Company FC, LLC

The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

Installation, Operation and Maintenance Series LFM114-1

Installation

Start-up of an automatic control valve requires that proper procedures be followed. Time must be allowed for the valve to react to adjustments and the system to stabilize. The objective is to bring the valve into service in a controlled manner to protect the system from damaging over-pressure.

1. Prior to installation, flush line to remove debris.
2. Install valve so the flow arrow matches flow through the line, and gauges to monitor valve inlet and outlet pressures. A Position Indicator can be installed to provide visual indication of valve position and operation without disassembly.
3. Install isolation valves upstream and downstream of the main valve.
4. Provide adequate clearance for valve servicing and maintenance. Refer to valve servicing dimensions on next page. Avoid installing valves 6″ and larger in the vertical position (main valve stem horizontal). Automatic Control Valves (ACVs) are designed for horizontal in-line installation, with the cover facing up (main valve stem vertical). Slow operation or premature stem and guide wear may occur if valve is not installed according to factory recommendations. Consult factory for detailed engineering review prior to ordering if valve is to be installed other than horizontally in-line.
5. If valve is equipped with a pilot control system, extra precautions should be made during installation to protect the piping circuit from damage. Only remove the pilot control system from the valve if necessary. Tubing and fittings should be kept clean and replaced exactly as removed. Consult appropriate hydraulic schematic to ensure proper re-assembly.
6. To accurately set flow rates, either a differential gauge or a flow meter should be installed.
7. Check orifice plate to assure that sense holes are free from obstruction.
8. Connect solenoid wiring leads to desired switching device, using safe, standard electrical practices.
9. fter installation, vent entrapped air from valve cover and pilot system by following instructions in the Setting the Rate-of-Flow Controls section on the following page.

Valve Servicing Dimensions

The following tables detail the recommended minimum valve servicing dimensions.

Globe

Angle

Setting the Rate-of-Flow Control Valves

STEP 1
Pre-set pilots as noted:
Rate of Flow – Adjust OUT, counterclockwise, to start valve at a lower flow rate.
Opening and Closing Speed – Turn the adjustment screws on the Closing Speed and Opening Speed Controls, if the main valve is so equipped, OUT, counterclockwise, 1½ to 2½ turns from full closed position.

STEP 2
Energize the solenoid to check actuation and to confirm connection to power source and so that initial valve filling is against the closed solenoid.

STEP 3
To ensure proper operation, any trapped air will need to be bled off the valve cover during startup. The ACV includes a bleed valve, use a flat head screwdriver to slowly open the valve (See Figure 1).

STEP 4
Pressure the line, by opening the upstream isolation valve slowly. Air is vented through the air bleed valve. Tighten the fitting when liquid begins to vent (See Figure 1).
Repeat the process until no air is trapped in the system.

STEP 5
Actuate the solenoid to open the main valve, checking that the main valve opens.

Setting the Rate-of-Flow Control Pilot

STEP 6
Slowly open downstream isolation valve to establish flow through the system.

STEP 7
With a demand for flow on the system, the valve can now be adjusted for the proper flow rate. This requires a meter to read the flow that the valve is providing.
STEP 8
While reading the meter register, adjust the Rate of Flow Control:
Turn the adjustment screw IN, clockwise, to increase the flow rate regulated (See Figure 2A).
Turn the adjustment screw OUT, counterclockwise, to reduce or lower the flow rate regulated (See Figure 2B).

STEP 9
Opening Speed Flow Control Adjustment: The Opening speed flow control allows free flow into the cover and restricted flow out of the cover of the main valve.
If valve opening is too slow, turn the adjustment screw OUT, counterclockwise, increasing the rate of opening (See Figure 3B).
If valve opening is too quick, turn the adjustment screw IN, clock-wise, decreasing the rate of opening (See Figure 3A).

Automatic Control Valve Maintenance Schedule

To ensure peak performance and longevity of your automatic con-trol valve, Watts/Ames recommends following the below standard maintenance schedule.

• Monthly Maintenance
  • Visual inspection of valve(s) for leaks
  • Inspect for proper operation(s); exercise valve.
• Quarterly Maintenance
  • Conduct monthly inspection.
  • Validate/Re-establish necessary setpoints of controls/pilots.
• Monthly Maintenance
  • Visual inspection of valve(s) for leaks
  • Inspect for proper operation(s); exercise valve.
• Quarterly Maintenance
  • Conduct monthly inspection.
  • Validate/Re-establish necessary setpoints of controls/pilots.

Troubleshooting Guide

WARNING
Warning: The valve cannot be serviced under pressure. Upstream and downstream Isolation Valves must be installed to protect system piping. Accurate diagnosis and trouble-shooting requires the valve to open fully, and may subject downstream piping and equipment to high pressure and/or flow rates. The downstream Isolation Valve should be kept closed while diagnosing the valve.
Extreme caution should be used while performing the troubleshooting techniques listed below.

Recommended tools for diagnosis: (3) PRESSURE GAUGES, installed to monitor the inlet pressure, outlet pressure, and cover chamber pressure. If included, a POSITION INDICATOR should be installed to visually assess the position of the disc & diaphragm assembly.

Test 1: Diaphragm Seal Test

1. Close upstream & downstream isolation valves. Close pilot isolation valves or remove pilot control tubing to isolate valve cover from incoming fluid & pressure. Remove uppermost cover plug, test cock, or limit switch.
2. With the valve cover chamber vented to atmosphere,
   partially open the upstream isolation valve, allowing incoming pressure to lift the disc & diaphragm assembly. A volume of water will be displaced from the cover chamber as the valve opens; consult valve specification sheets for approximate cover capacity. A continuous flow of water from the open port indicates a damaged diaphragm or loose disc & diaphragm assembly. Disassemble valve and replace diaphragm or tighten disc & diaphragm assembly.

Test 2: Seat Seal Test

1. Close downstream isolation valve and install pressure gauges on an open inlet and outlet port of main valve.
2. Open upstream isolation valve to allow pressure on to the valve cover. Allow valve to fully close.
3. Monitor downstream pressure gauge; reading should hold steady below incoming pressure. If pressure on downstream side rises to match upstream pressure, leakage is occurring through the seat of the main valve. Disassemble valve, inspect and repair/replace any required parts.
   a. If gauge pressure rises to match outlet pressure (down-stream of closed isolation valve) yet remains below inlet pressure, the isolation valve may be leaking as opposed to main valve seat.

Test 3: Freedom of Movement/Valve Travel Test

1. Close upstream and downstream isolation valves. Install valve position indicator.

2. Partially open upstream isolation valve and allow cover to fill with fluid & pressure, closing the valve fully. Mark the position indicator’s full closed position.

3. Isolate cover chamber from receiving fluid and pressure by closing isolation valves or removing control tubing.

4. Carefully vent cover chamber to atmosphere by opening test cock or removing a cover plug. Observe the valve position indicator as the valve travels to the full-open position. The disc & diaphragm assembly should move freely from fully closed to fully open position without binding or “grabbing” at any point during its movement.

   • The disc & diaphragm assembly may momentarily “hesi-tate” while travelling from fully closed to fully open position
     this is a normal characteristic of diaphragm-operated control valves, and does not indicate mechanical binding or improper valve operation.

   • A continuous discharge of water from the cover chamber after venting to atmosphere indicates leakage past the diaphragm.

5. If necessary, disassemble valve and inspect/repair disc & dia-phragm assembly.

Troubleshooting Guide

source, supply pressure may not be controlled by valve operator.
Main valve stem assembly corroded/ damaged| Inspect stem assembly, clean/ replace if necessary.|
Blockage in pilot system.| Inspect & clean any installed pilot system strainers, check orifice/speed controls for blockages.|
Improperly configured opening speed control.| Adjust opening speed control to verify functionality, adjust as required.| Standard setting for opening speed control is 11/2 – 21/2 turns open from full closed position. Can be adjusted in field.
Main Valve will not close| Closed isolation valves in pilot system| Check isolation valves, ensure open.|
Diaphragm is damaged| Conduct diaphragm seal test, repair and replace if necessary.|
Main valve stem assembly corroded/ damaged.| Inspect stem assembly, clean/ replace if necessary.|
Blockage in main valve.| Perform freedom of movement test; if valve does not close, disassemble and remove blockage.|
Worn/damaged valve seat.| Perform seat sealing check; disassemble and inspect/re- pair seat if required.|
Improperly configured closing speed control.| Adjust closing  speed  control to verify functionality, adjust as required.| Standard setting for closing speed control is 11/2 – 21/2 turns open from full closed position. Can be adjusted in field.
Field installed orifice lines are reversed| Reinstall per schematic|
Solenoid will not actuate| Possible Cause: Low or no voltage| Check voltage at the solenoid connection, insuring that it has the minimum of 85% of the coils rated voltage.| Should be performed by licensed electrician

Installation, Operation and Maintenance

Valve Disassembly Instructions
Before undertaking valve disassembly, it is recommended to gather the following tools to aid you during the process:

• Small & large adjustable wrenches
• Screwdriver set
• Machinist fine metal file
• Fine wire brush
• Bench vise
• Basic valve IO&M manual
• Hammer & dull cold chisel
• Heavy-duty ratchet & socket set
• exagonal wrench set
• 320 grit/fine Emery cloth
• Appropriate technical bulletins for

1. Isolate the valve from line pressure and depressurize it to ensure safe working conditions. Disconnect any electrical connections if so equipped.
2. Carefully remove Position Indicator or Limit Switches if equipped. Remove all tubing, fittings, and Control Pilots necessary to easily access and remove the cover. Remove cover nuts and washers.
3. Remove the cover. If cover is not free to be removed, loosen it by tapping upward along its outside edge with a dull cold chisel, pic-tured above.
   • Large valves may require the installation of lifting “eye” bolts in order to facilitate cover removal; installation ports are provided on the cover for this purpose.
4. Remove the Disc and Diaphragm Assembly from the valve body by lifting straight up.
   • Large diameter valves may require a lifting “eye” bolt to be installed in the valve stem accessory threads located on the very top of the valve stem.
5. Before removing Stem Nut, examine stem threads for mineral build-up. Remove deposits with a fine wire brush. Extreme care should be taken not to damage the finish on stem guiding surfaces when disassembling. Avoid applying pipe wrenches to top or bottom stem guide surfaces.
6. After removing the Stem Nut, the remainder of the Disc & Diaphragm Assembly should disassemble easily. Polish stem guide surfaces with fine emery cloth to remove any mineral deposits and inspect for excessive wear. Remove any mineral build-up from other components with wire brush or by using a Mineral Dissolving Solution. Inspect parts for wear and replace if necessary.
7. Inspect valve seat. If seat is not damaged, removal is not necessary. Valve seats 6″ and smaller are threaded into the body of the valve and require a seat removal tool (Figure 4) (Table 1 details the tool dimensions for seat removal). Valve seats 8″ and larger are held in the valve body with stainless steel cap screws. Remove seat retaining screws and lift seat straight up (Figure 5).
   Table 1: Seat Removal Tool Dimension**** Size| A| B| C| D| E (Dia.)| F
   ---|---|---|---|---|---|---
   in| Pipe Size (in)| Min. Length (in)| in| in| in| in
   11/4| 1| 3.12| 0.38| 0.25| 0.44| 0.55
   11/2| 1| 3.12| 0.38| 0.25| 0.44| 0.50
   2| 11/4| 3.38| 0.38| 0.25| 0.44| 0.50
   21/2| 2| 4.0| 0.38| 0.38| 0.56| 0.62
   3| 21/2| 4.5| 0.50| 0.38| 0.56| 0.62
   4| 3| 5.0| 0.50| 0.44| 0.56| 0.62
   6| 5| 6.50| 0.62| 0.44| 0.56| 0.62

*Schedule 40 steel pipe

8. Replace Seat Disc, Diaphragm and Spacer Washers provided in Main Valve repair kit (refer to Table 2 or 3 for correct repair kit part number). Re-assemble in the reverse order of disassembly.
   Table 2: Full Port Valve (M100/M1100) Repair Kits**** Size (in)| 11/4| 11/2| 2| 21/2| 3| 4| 6| 8| 10| 12| 14| 16
   ---|---|---|---|---|---|---|---|---|---|---|---|---
   P/N| 0677-01| 0677-01| 0677-02| 0677-03| 0677-04| 0677-05| 0677-06| 0677-07| 0677-08| 0677-09| 0677-10| 0677-11

Table 3: Reduced Port Valve (M6100 / M61100) Repair Kits****

9. Re-Install Disc and Diaphragm Assembly in the valve, taking care not to damage the lower guide area in the center of the valve seat.
10. Re-install Cover Spring. Replace Valve Cover and tighten Cover Nuts in a crossing pattern to ensure even distribution. Test the Disc and Diaphragm Assembly for smooth travel by following the Freedom of Movement Test procedure in previous section.
11. Test the integrity of the Seat Seal by following the Seat Seal Test procedure in previous section
12. Return valve to service by following instructions in the Setting the Rate-of-Flow Controls section matching the valve function.

Limited Warranty

Watts Regulator Co. (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control. This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.

Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to determine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.

USA: T: 978-689-6066 • F: 978-975-8350 • Watts.com Canada: T: 888-208-8927 • F: 905-481-2316 • Watts.ca Latin America: T: (52) 55-4122-0138 • Watts.com

References

• ASSEMBLY | Cintas y sistemas de transporte industrial
• shipment.es

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