ZURN 350 Double Check Valve Assembly Instructions
- June 13, 2024
- ZURN
Table of Contents
ZURN 350 Double Check Valve Assembly Instructions
Application
Designed for installation on potable water lines to protect against both backsiphonage and backpressure of polluted water into the potable water supply. The Model 350 shall provide protection where a potential health hazard does not exist. Ideal for use where lead-free* valves are required.
Standards Compliance : (Sizes 2 1/2″-10″ Horiz. & Vert.) (Size 12″ horizontal)
- ASSE® Listed 1015
- CSA® Certified B64.5
- cUPC® Listed
- AWWA Compliant C510, and C550
- UL® Classified
- C-UL® Classified
- FM® Approved (2 1/2″ – 10″)
- Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
- NYC MEA 50-01-M (2 1/2″ – 3″)
- NYC MEA 297-98-M (4″ – 6″)
- NYC MEA 316-01-M (8″ – 10″)
- Meets the requirements of NSF/ANSI/CAN 61*
- (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Materials
Main valve body: Ductile Iron ASTM A 536
Access covers: Ductile Iron ASTM A 536
Coatings: NSF Approved fusion epoxy finish
Internals: Stainless steel, 300 Series
NORYL™
Fasteners: Stainless Steel, 300 Series
Seal ring: EPDM (FDA approved)
O-ring: Buna Nitrile (FDA approved)
Springs: Stainless Steel, 300 Series
Features
Sizes: 2 1/2″, 3″, 4″, 6″ , 8″, 10″ , 12″
Maximum working water pressure : 175 PSI
Maximum working water temperatur: e 140°F
Hydrostatic test pressure: 350 PSI
End connections
(Grooved for steel pipe): AWWA C606
(Flanged): ANSI B16.42
Class 150
Options (Suffixes can be combined)
- with NRS shut-off valves (standard)
- FSC – with epoxy coated wye type strainer (flanged only 2-1/2″-10″)
- G – with groove end gate valves (2-1/2″ – 10″)
- GF – with grooved inlet connection and flanged outlet connection (2-1/2″ – 10″)
- FG – with flanged inlet connection and grooved outlet connection (2-1/2″ – 10″)
- L – less shut-off valves (flanged body connec tions)
- OSY – with OS & Y gate valves
- PI – Post Indicator gate valve
- BG – with grooved end butterfly valves with integral supervisory switches (2-1/2″ – 10″)
New Connected Products. Search ZCSM-PF on Zurn.com for details.
Accessories
- Connected Pressure Monitor (Model ZCSM-PF)*
- Connected Flow Meter Option (Model ZCSM-BTM must be ordered with Model ZCSM-PF)*
- Repair kit (rubber only)
- Thermal expansion tank (Model XT)
- OS & Y Gate valve tamper switch (OSY-40)
Attention: Model 350 (flange body) and 350A (grooved body) have different lay lengths.
Dimensions & Weights (do not include pkg.)
| MODEL 350 SIZE | DIMENSION (approximate) | WEIGHT |
|---|---|---|
| A | A WITHBUTTERFLYVALVES | B LESS GATE VALVES |
| CLOSED | E NRS GATE | E WITHBUTTERFLYVALVES |
| VALVES FLANGED | NRS GATE VALVES GROOVED | OSY GATE VALVES FLANGED |
| VALVES GROOVED | BUTTERFLY VALVES GROOVED | |
| in. | mm | in. |
| mm | in. | mm |
| kg | lbs. | kg |
| 2 1/2 | 65 | 31 |
| 15 3/8 | 391 | 11 1/2 |
| 70 | 137 | 62 |
| 3 | 80 | 32 |
| 17 | 432 | 12 3/4 |
| 147 | 67 | 183 |
| 4 | 100 | 37 5/8 |
| 572 | 18 1/4 | 464 |
| 253 | 115 | 281 |
| 6 | 150 | 44 5/8 |
| 24 1/4 | 616 | 18 |
| 421 | 191 | 465 |
| 8 | 200 | 60 7/8 |
| 1/2 | 724 | 21 1/8 |
| 352 | 834 | 378 |
| 10 | 250 | 63 7/8 |
| 1159 | 34 3/4 | 883 |
| 1148 | 521 | 1082 |
| 12 | 300 | 66 3/16 |
| 1029 | 28 | 711 |
| 1607 | 729 | n/a |
| Zurn Industries, LLC ** | Wilkins** 1747 Commerce Way, Paso Robles, CA |
U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766In Canada | Zurn Industries Limited 7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6, 877-892-5216 www.zurn.com| Rev. N Date: 12/22Document No. BF-350 Product No. Model 350 Patent zurn.com/patentsPage 1 of 2
Flow Characteristics
MODEL 350 2 1/2″, 3″ & 4″ (STANDARD & METRIC)
MODEL 350 6″ & 8″ (STANDARD & METRIC)
MODEL 350 10″ & 12″ (STANDARD & METRIC)
Typical Installation
Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted at a minimum of 12″ (305mm) and a maximum of 30″ (762mm) above adequate drains with sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged.
Capacity thru Schedule 40 Pipe (GPM)
Pipe size| 5 ft/sec| 7.5 ft/sec| 10 ft/sec| 15 ft/sec
2 1/2″| 75| 112| 149| 224
3″| 115| 173| 230| 346
4″| 198| 298| 397| 595
6″| 450| 675| 900| 1351
8″| 780| 1169| 1559| 2339
10″| 1229| 1843| 2458| 3687
12″| 1763| 2644| 3525| 5288
OUTDOOR INSTALLATION
INDOOR INSTALLATION
(350OSY with ZCSM-PF Connected Pressure Monitor and ZCSM-BTM Connected Flow
Meter accessories)
VERTICAL INSTALLATION (350OSYG)
Specifications
The Double Check Backflow Prevention Assembly shall be certified to NSF/ANSI/CAN 61, ASSE® Listed 1015, and supplied with full port gate valves. The main body and access cover shall be epoxy coated ductile iron (ASTM A 536), the seat ring and check valve shall be NORYL™, the stem shall be stainless steel (ASTM A 276) and the seat disc elastomers shall be EPDM. The checks shall be accessible for maintenance without removing the device from the line. The Double Check Backflow Prevention Assembly shall be a ZURN WILKINS Model 350.
Zurn Industries, LLC | Wilkins
1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph.
855-663-9876, Fax
805-238-5766
In Canada | Zurn Industries Limited
7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6,
877-892-5216
www.zurn.com
