EMERSON Spence Type E2 Main Valve Pilot Operated Regulator Instruction Manual

Instruction Manual
VCIMD-14935
Spence Type E2 Main Valve

Spence Type E2 Main Valve Pilot Operated Regulator

WARNING
Failure to follow these instructions or to properly install and maintain this equipment could result in property damage and personal injury or death. Type E2 main valve must be installed, operated, and maintained in accordance with federal, state, and local codes, rules and regulations, and Emerson instructions. If the valve vents gas or a leak develops in the system, service to the unit may be required. Failure to correct the issue could result in a hazardous condition. Installation, operation, and maintenance procedures performed by unqualified personnel may result in improper adjustment and unsafe operation. Either condition may result in equipment damage or personal injury. Only a qualified person shall install or service the Type E2 main valve.

Introduction

Scope of the Manual
This manual provides instructions for the installation, troubleshooting, maintenance, valve setting, and parts ordering for the Type E2 main valve regulator.

Product Description

The Type E2 Main Valve is a pilot-operated normally closed, single-seat design featuring backless construction, and a protected main spring.
One or more pilot regulators are mounted to the Type E2 main valve to fit with the specifications defined by the pressure or temperature regulating system.

Specifications

This section lists the specifications for the Type E2 main valve. Factory specifications are stamped on the nameplate fastened on the regulator at the factory.

Valve Sizes
NPS 3/4, 1, 1-1/4, 1-1/2, 2, 2-1/2, 3, 4, 5, 6, 8 and 10 / DN 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200 and 250
End Connection Styles
NPT, CL125
Pressure Rating(1)
15 psig / 1.03 bar| Temperature Rating(1)
250 °F/ 121 °C
Rated Flow Coefficient
See Table 1
Main Valve Material
Cast Iron
Approximate Weight
See Table 2
---|---

1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.

Table 1. Type E2 Main Valve Rated Flow Coefficients

SEAT
FACTOR| REGULATOR SIZE, NPS / DN
---|---
3/4/20| 1 / 25| 1-1/4 / 32| 1-1/2 / 40| 2 / 50| 2-1/2 / 65| 3 / 80| 4 / 100| 5 / 125| 6 / 150| 8 / 200| 10 / 250
Full| 8.| 12.| 19.| 27.| 44| 68| 96| 143| 202| 255| 465| 748
70 to 75%| —–| 9.| 13.| 19.| 31.| 48.| 67.| 100| 141| 178| —–| —-
46%| —–| —-| —–| 12.| —–| 31.| —-| 64.| ——| 115| —–| 336

Table 2. Type E2 Main Valve Approximate Weight

Principle of Operation

The regulator is operated by initial steam or fluid pressure. It is normally closed, being held so by initial pressure on the disc and by an internal main spring, see Figure 3. When the pilot is opened (see pilot instructions), initial pressure flows through the pilot to the 8B tee. 4A bleed port restricts the flow and pressure builds under the diaphragm and opens the main valve.
Delivery pressure feeds back through the control pipe to the pilot diaphragm. As this pressure approaches a balance with the thrust of the adjusting spring, the pilot throttles the loading pressure. In turn, the main valve takes a position established by the loading pressure were just enough steam flows to maintain the set delivery pressure.

Installation

WARNING

Personal injury or system damage may result if this regulator is installed, without appropriate overpressure protection, where service conditions could exceed the limits given in the Specifications section and/or regulator nameplate. Additionally, physical damage to the regulator may result in personal injury or property damage due to escaping of accumulated gas. To avoid such injury and damage, install the regulator in a safe location. Under enclosed conditions or indoors, escaping gas may accumulate and be an explosion hazard. In this case, the vent should be piped outdoors. For regulator constructions with a spring case vent, the vent should be kept open to permit the free flow of gas to the atmosphere. Protect openings against the entrance of rain, snow, insects or any other foreign material that may plug the spring case vent or vent line. All pressure equipment should be installed in a non-seismic area; should not be exposed to fire, and should be protected from thunderbolt (lightning) strikes.

Planning

• Locate the valve in a straight run of horizontal pipe.
• Allow headroom above the valve for access through the blind flange.
• Provide clearance for stem withdrawal underneath.
• Prevent water hammer and erratic operation by installing traps to provide proper drainage before and after the valve and before the secondary pressure relief valve or control valve.
• Avoid damaging effects of scale and dirt in the pipelines by using a strainer as shown in Figure 2.
• Provide a 3-valve bypass to facilitate inspection without interrupting service.
• To eliminate excessive noise and erratic regulation with steam and other compressible fluids, enlarge the delivery pipe size to effect a reasonable flow velocity at the reduced pressure. A tapered transition is recommended.
• If possible, avoid a sharp turn close to the regulator outlet and a bull-headed tee connection to the low-pressure main.
• Install initial and delivery pressure gages to indicate performance.
• If the pressure rating of the delivery system or connected equipment is less than the initial steam pressure, provide a safety valve.

Main Valve

• Mount the main valve with the diaphragm chamber down and an arrow on the body pointing in the direction of flow. Screwed end valves should be mounted in unions.

Pilot
For Side Mount Construction

1. Mount the pilot on either side of the main valve by means of 1/4 in. nipple and union provided.
2. Make this connection on the 1/4 in. pipe tap at the inlet of the main valve as shown in Figure 2.

For Integral Mount Construction

1. Remove the blind flange on the pilot and mount it on the blind flange of the main valve using provided bolt.
2. Screw 4A bleed port fitting into the 1/8 in. pipe tap at the outlet of the main valve body. Note bleed orifice in this fitting is vital to the operation of the regulator.
3. Screw 8B tee into 1/8 in. pipe tap in the pilot. Select tap facing downstream.
4. Screw No. 5B elbow into a 1/8 in. pipe tap on the underside of the main valve diaphragm chamber.
5. Connect tubing bends as illustrated in Figure 3.

Control Pipe (Not required with Type T14)

1. Use 1/4 in. pipe for this line which connects the pilot diaphragm chamber to the desired point of pressure control.
2. Take control at a point of minimum turbulence. Avoid control immediately at the valve outlet or after a turn.
3. When the delivery pipe expands in size, select a spot at least 4 pipe diameters beyond the point of enlargement.
4. Pitch away from the pilot to avoid erratic operation and excessive fouling.
5. Eliminate water pockets.
6. Locate the delivery pressure gage in the control pipe to show pressure actually reaching the pilot diaphragm

Start-up and Setting

△ CAUTION

Never open a reducing valve without a positive indication that the high side is clear of condensate.

1. On pressure-reducing valves like Type E2, use a bypass to fill the delivery system and raise pressure to slightly below the normal required.
2. Close the pilot by releasing compression on adjusting the spring. See Figure 3.
3. Open 1/4 in. control pipe valve.
4. Crack outlet stop valve.
5. Crack the inlet stop valve.
6. Blow down the strainer.
7. Open the inlet stop valve and gradually compress the adjusting spring until the valve opens and takes control at the desired pressure.
8. Alternately choke down on the by-pass and open the outlet stop valve until the regulator is on the line. See individual instructions for other pilots.

Valve Setting
The valve setting is gaged at K to establish the correct stem length and diaphragm position. Dimension K is supplied with each replacement stem. See Table 5 for K values.

1. To install a new stem (key 13), fasten the disc (key 8) firmly on the stem with the stem nut.
2. Insert stem and disc assembly in the valve and screw on the pressure plate (key 16). Omit spring (key 14) for this operation.
3. Hold the disc on the seat and adjust the position of the pressure plate until valve setting K is reached.
4. Push the pressure plate against stops in the base (key 18).
5. Remove the disc, drop out the pressure plate and stem, drill, and insert the dowel pin (key 15) to lock the joint.
6. Grind off stem projection flush with the face of the pressure plate.

Troubleshooting

Failure to Open
If the main valve failed to open check the following possible causes to properly correct the problem.

• Adjusting the spring on the pilot may have been tampered with.
• Initial pressure may be down due to a partially closed supply valve, clogged strainer, or other obstruction.
• No. 4A bleed port fitting may have been omitted and an open coupling substituted.
• The control pipe may be plugged in. The most likely points of obstruction are at the shutoff valve and entrance to the delivery main.
• the Main diaphragm may be broken. Test with air or water before dismantling.

Failure to Close
If the main valve failed to close check the following possible causes to properly correct the problem.

• Adjusting the spring on the pilot may have been tampered with.
• The orifice in bleed port No. 4A may be plugged.
• The bypass valve may be leaking.
• On pressure regulators like Type E2, the main valve or pilot may be held open by foreign matter in the seat.

To determine which valve leaks, follow these steps. Close the stop valve and 1/4 in. control pipe valve.

1. Remove the bleed port bend so the pilot will exhaust into the atmosphere.
2. Crack the inlet stop valve. Steam will issue from 8B tee.
3. Release compression by adjusting the spring to see if the pilot closes tight.
4. Open and close several times to wash the seat. Steam blowing back from the bleed port means the main valve disc is held open by foreign matter. Steam may wash the obstruction from the seat if the valve is made to open wide. This can be accomplished, even at light loads, if the control point is beyond the outlet stop valve.
5. Reassemble the bleed port bend and place the regulator in operation.
6. Slowly open and close the outlet stop valve.

Maintenance

WARNING
To avoid personal injury or property damage from the sudden release of pressure, isolate the regulator from the pressure system and release all pressure from the pilot and main valve before performing maintenance operations.

Inspection
Under normal conditions, complete dismantling is not recommended.
Check the following after the operation. Then, schedule an inspection as required.

1. Inspect for dirt collected at the 4A bleed port.
2. Inspect all joints for leakage. Keep bolts tight to avoid any leaks

Main Valve Maintenance

1. Connect a source of air or water pressure that can be adjusted by hand to the No. 5B elbow.
2. Apply 30 psi / 2.07 bar to jack valve open and prevent the stem from turning while removing stem nuts.
3. Use penetrating oil on the threads.

Seat Ring Maintenance
Note
These joints should be made up of high-temperature gasket compounds.

1. Remove the old compounds from the body and seat ring with a wire brush.

2. Apply the new compound sparingly to both parts, threads, and shoulders. Let stand until tacky before assembling.
   Grinding In
   △ CAUTION
   Seats and discs should never require more than the lightest touch-up with a very fine (400 grit) grinding compound. Heavy grinding will produce galling, a wider seating surface, and a groove in the disc, all of which tend to cause leakage.

3. Reface a damaged surface before attempting to grind it in.

4. Grind sparingly.

5. The main stem (key 13, Figure 4) is slotted for rotation with a screwdriver, valve spring (key 14) is omitted from the assembly during grinding.

6. Slip the stem into its normal position.

7. Apply compound to the disc. Place it on the stem and guide plug, and tighten it with the stem nut.

8. After grinding, disassemble and clean all parts.

Parts Ordering
When corresponding with your local Sales Office about the Type E2 Main Valve, always reference the assembly number. When ordering replacement parts, specify the complete character part number from the following parts list.

Parts List

Repair Parts Kit
NPS 3/4 / DN 20
NPS 1 / DN 25
NPS 1-1/4 / DN 32
NPS 1-1/2 / DN 40
NPS 2 / DN 50
NPS 2-1/2 / DN 65
NPS 3 / DN 80
NPS 4 / DN 100
NPS 5 / DN 125
NPS 6 / DN 150
NPS 8 / DN 200
NPS 10 / DN 250
Type E2
NPS 3/4 to 3 / DN 20 to 80
NPS 4 to 10 / DN 100 to 250| WAL08-07940-00
WAL08-07941-00
WAL08-07942-00
WAL08-07943-00
WAL08-07944-01
WAL08-07945-01
WAL08-07946-01
WAL08-09587-01
WAL08-10980-00
WAL08-10995-00
– – – – – – – – – – –
– – – – – – – – – – –
See Table 3
See Table 4

Table 3. Type E2, NPS 3/4 to 3 / DN 20 to 80 Parts List

ITEM
NUMBER| PART
NAME| MATERIAL| VALVE SIZE, NPS / DN
---|---|---|---
314 / 20| 1 / 25| 1-1/4 / 32| 1-112 / 40| 2 / 50| 2-112165| 3180
1| Blind
Flange
Stud| Steel| WAL05-05518-00| WAL04-101113-00| WAL05-05507-00| WAL04-05543-00| WAL04-10119-00| WAL04-10119-00| WAL04-05443-00
2| Blind
Flange
Nut| Steel| WAL05-02847-00| WAL05-02851-00| WAL05-02854-00| WAL05-02856-00| WAL05-02860-00| WAL04-02860-00| WAL05-02856-00
3| Blind
Flange| Cast Iron| WAL04-02171-00| WAL04-02173-00| WAL04-02176-00| WAL04-02178-00| WAL04-02180-00| WAL04-02185-00| WAL04-02157-00
4| Gasket| Non-
Asbestos| WAL05-02381-01| WAL05-02382-01| WAL05-02382-01| WAL05-02365-01| WAL05-02366-01| WAL05-02367-01| WAL05-02369-01
5| Stem Nut| Steel| WAL05-02969-00| WAL05-02970-00| WAL05-02970-00| WAL05-02971-00| WAL05-02971-00| WAL05-02972-00| WAL05-02973-00
6| Disk Guide
Plate| Cast Iron| WAL04-03576-00| WAL04-03479-00| WAL04-03480-00| WAL04-03478-00| WAL04-03500-00| WAL04-03509-00| WAL04-03496-00
7| Guide Plug| Stainless
Steel| – – – –| – – – –| – – – –| WAL04-03751-01| WAL04-03750-00| WAL04-03754-00| WAL04-03755-00
8| Integral
Disk| Stainless
Steel| WAL04-01813-02| WAL04-01832-02| WAL04-01850-02| WAL04-01870-02| WAL04-01888-02| WAL04-01906-01| WAL04-01918-00
9| Seat Ring| Stainless
Steel| WAL04-04075-01| WAL04-04084-01| WAL04-04092-01| WAL04-04496-01| WAL04-11593-00| WAL04-11650-00| WAL04-11549-00
10| Pipe Plug
1/4| Steel| WAL04-03772-00| WAL04-03772-00| WAL04-03772-00| WAL04-03772-00| WAL04-03772-00| WAL04-03772-00| WAL04-03772-00
11| NPT Body| Cast Iron| – – – –| – – – –| – – – –| – – – –| – – – –| – – – –| —-
| 125  Body| Cast Iron| – – – –| – – – –| – – – –| – – – –| —-| – – – –| – – – –
12| Pipe Plug
1/8| Steel| WAL04-03769-00| WAL04-03769-00| WAL04-03769-00| WAL04-03769-00| WAL04-03769-00| WAL04-03769-00| WAL04-03769-00
13| Stem| Stainless
Steel| WAL04-05241-02| WAL04-05254-02| WAL04-05254-02| WAL04-05325-01| WAL04-05247-02| WAL04-05324-02| WAL04-05394-03
14| Main
Spring| Steel| WAL05-05093-02| WAL05-05093-02| WAL05-05094-01| WAL05-05095-01| WAL05-05096-01| WAL05-05097-01| WAL05-05098-01
15| Groove Pin| Steel| WAL05-03247-00| WAL05-03247-00| WAL05-03247-00| WAL05-03251-00| WAL05-03251-00| WAL05-03253-00| WAL05-03254-00
16| Pressure
Plate| Cast Iron| WAL04-03621-00| WAL04-03700-00| WAL04-03622-00| WAL04-03623-01| WAL04-03624-00| WAL04-03625-00| WAL04-03626-00
17| Diaphragm
Bolt| Steel| WAL05-04770-00| WAL05-04770-00| WAL05-04773-00| WAL05-04773-00| WAL05-04773-00| WAL04-04773-00| WAL05-04774-00
18| Base| Cast Iron| – – – –| – – – –| – – – –| – – – –| – – – –| – – – –| —-
19| Diaphragm| Hycar| WAL05-01668-00| WAL05-01668-00| WAL05-01669-00| WAL05-01671-00| WAL05-01671-00| WAL05-01672-00| WAL05-01673-00
20| Hood| Cast Iron| WAL04-02571-00| WAL04-02571-00| WAL04-02605-00| WAL04-02606-00| WAL04-02607-00| WAL04-02608-00| WAL04-02648-00
21| Diaphragm
Nut| Steel| WAL05-02872-00| WAL05-02872-00| WAL05-02874-00| WAL05-02874-00| WAL05-02874-00| WAL05-02874-00| WAL05-02874-00
22| Stem
Washer| Stainless
Steel| WAL04-06130-00| WAL04-06131-00| WAL04-10048-00| WAL04-06132-00| WALO4-12291-00| WAL04-06248-00| WAL05-06249-00
23| Retainer
Ring| Stainless
Steel| WAL05-09382-00| WAL05-09383-00| WAL05-09383-00| WAL05-09384-00| WAL05-09392-00| WAL05-09385-00| WAL05-09386-00
24| Top Flange| Cast Iron| WAL04-02246-00| WAL04-02248-00| WAL04-02250-00| WAL04-02252-00| WAL04-02233-00| WAL04-02259-00| WAL04-02261-00

Table 4. Type E2, NPS 4 to 10 / DN 100 to 250 Parts List

ITEM
NUMBER| PART
NAME| MATERIAL| VALVE SIZE, NPS / DN
---|---|---|---
41100100| 5 / 125| 1311150| 8 / 200| 10 / 250
1| Blind
Flange
Stud| Steel| WAL04-05443-00| WAL04-10119-00| WALO4-10120-00| WAL04-10120-00| WAL04-10120-00
2| Mild
Flange
Nut| Steel| WAL05-2856-00| WAL05-02860-00| WAL05-02860-00| WAL05-02860-00| WAL05-02860-00
3| Find Flange| Cast Iron| WAL04-02157-00| WAL04-2158-00| WAL04-02162-00| WAL04-02165-00| WAL04-02167-00
4| Gasket| Non-
Asbestos| WAL05-02369-01| WAL05-02371-01| WAL05-02397-01| WAL05-02374-01| WAL05-02375-01
5| Stem Nut| Steel| WAL05-02973-00| WAL05-02947-00| WAL04-02975-00| WAL04-02976-00| WAL04-02977-00
6| Disk Guide
Plate| Cast Iron| WAL04-03496-00| WAL04-03504-00| WAL04-03473-00| WAL04-03474-00| WAL04-03497-00
7| Guide Plug| Stainless
Steel| WAL04-03756-00| WAL04-03757-00| WAL04-03742-00| WAL04-03743-00| WAL04-03744-00
8| Integral
Disk| Stainless
Steel| WAL04-01922-00| WAL04-01931-00| WAL04-01940-00| WAL04-01994-00| WAL04-01951-00
9| Seat Ring| Stainless
Steel| WALC4-11759-00| WAL04-11666-00| WAL04-15802-00| WAL07-43794-00| WAL04-15803-00
10| Pipe Plug
1/4′| Steel| WAL04-03772-00| WAL04-03772-00| WALC4-03772-00| WAL04-03772-00| WAL04-03772-00
11| 125 Body| Cast Iron| – – – –| – – – –| – – – –| – – – –| – – – –
12| Pipe Plug
1/8′| Steel| WAL0403769-00| WAL04-03769-00| WAL04-03769-00| WAL04-03769-00| WAL04-03769-00
13| Stem| Stainless
Steel| WAL04-05266-02| WAL04-05268-02| WAL04-05269-02| WAL04-05273-02| WAL04-05272-01
14| Main
Spring| Steel| WAL05-05099-01| WAL05-05100-01| WAL05-05101-01| WAL05-05102-01| WAL05-05103-01
15| Groove Pin| Steel| WAL05-03256-00| WAL05-03257-00| WAL05-03259-00| WAL05-03260-00| WAL05-03262-00
16| Pressure
Plate| Cast Iron| WAL04-03627-00| WAL04-03628-00| WAL04-03629-00| WAL04-03630-00| WAL04-03631-00
17| Diaphragm
Bott| Steel| WAL05-04774-00| WAL05-04775-00| WAL05-04780-00| WAL05-04780-00| WAL05-04782-00
18| Base| Cast Iron| – – – –| – – – –| – – – –| – – – –| —-
19| Diaphragm| Hycar| WAL05-01674-00| WAL05-01675-00| WAL05-01676-00| WAL05-01677-00| WAL04-01678-00
20| Hood| Cast Iron| WAL04-02609-00| WAL04-02618-00| WAL04-02610-00| WAL04-02611-00| WAL04-02612-00
21| Diaphragm
Nut| Steel| WAL05-02874-00| WAL05-02874-00| WAL05-02877-00| WAL05-02877-00| WAL05-02877-00
22| Stem
Washer| Stainless
Steel| WAL04-06249-00| WAL04-06270-00| WAL04-06250-00| WAL04-06251-00| WAL04-06271-00
23| Retainer
Ring| Stainless
Steel| WAL05-09386-00| WAL05-09387-00| WAL05-09388-00| WAL05-09389-00| WAL05-09390-00
24| Top Flange| Cast Iron| WAL04-02261-00| WAL04-02263-00| WAL04-02268-00| WAL04-02266-00| – – – –

Table 5. Type E2 Main Valve K Values

VCIMD-14935 © 2021 Emerson Electric Co. All rights reserved 11/21. Spence is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and conditions, which are
available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.
Emerson Electric Co. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for the proper selection, use, and maintenance of any Emerson Electric Co. product remains solely with the purchaser.

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