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Zurn Wilkins - 375L Series - Backflow Preventer

Deeco - Zurn Wilkins - 375L Series - Product Image
Brand: Zurn Wilkins
Category: Backflow Prevention, 375 Series
Size Range:

65-250mm

Other Sizes:

32-50mm

20-25mm

Connection:

Flanged AS2129 Table D/E

Product Description

The Zurn Wilkins 375 Reduced Pressure Principle Backflow Preventer provides high-hazard protection for all applications. The flanged, epoxy-coated ductile iron body is available with multiple shut-off valve options for installation versatility.

Features and Benefits

  • Short lay length for small space installation.
  • NRS, OS&Y, or Butterfly shut-off valves are available.
  • Available in flanged, grooved, or grooved X flanged end connections for installation versatility.
  • Ideal for any backflow replacement.
  • Utilizes Zurn Wilkins low headloss Compound Check for reliable and superior performance.
  • No threads or taps in the body or cover, eliminating exposure to corrosion.
  • Single access cover reduces downtime.
  • No threads or taps in the body or cover, eliminating exposure to corrosion.

375L-3DCAD

Typical Application

Designed for installation on potable water lines to protect against both back siphonage and backpressure of contaminated water into the potable water supply. Reduced Pressure Zone Device Assembly shall provide protection where a potential health hazard exists. (High Hazard).

375L - Installation

Zurn Wilkins - 375L - Customer Installation

Standards Compliance

  • Australian Watermark and Standards Mark
  • UL Classified
  • FM Approved
Zurn Wilins - 350L - Standards Compliance

Technical Data

Operating Parameters

  • Max. Working Water Pressure: 1200kPa
  • Max. Working Temperature: 60°C
  • Hydrostatic Test Pressure: 2400kPa
  • End Connections: Flanges to AS2129

Materials

  • Main Valve Body Ductile Iron ASTM A536 Grade 4
  • Access Covers Ductile Iron ASTM A536 Grade 4
  • Coatings Fusion Epoxy
  • Fasteners Stainless Steel 300 Series
  • Internals Stainless Steel 300 Series, Noryl™
  • Seal Ring EPDM
  • O-ring Buna Nitrile
  • Springs Stainless Steel 300 Series
  • Sensing Line Stainless Steel, Braided Hose

Flow Characteristics

MODEL 375 RPZ 65mm, 80mm & 100mm (STANDARD & METRIC)

Zurn Wilkins - 375L - 65,80,100mm - Flow Rates

Zurn Wilkins - 375L-65mm, 80mm,100mm - Flow Rates

MODEL 375 RPZ 150mm, 200mm, 250mm (STANDARD & METRIC)

Zurn Wilkins - 375L - 150,200,250mm - Flow Rates

Zurn Wilkins - 375L-10mm, 200mm, 250mm - Flow Rates

Technical Specifications

Dimensional Drawing

Zurn Wilkins - 375L - 65,80,100,150mm - Gate Valve
Zurn Wilins - 375L - 65,80,100,150mm - Butterfly Valve

Zurn Wilins - 375L - 65,80,100,150mm - Butterfly Valve

Zurn_Wilkins_Butterfly_valve_Dimensional_Drawing

Dimensions and Weights (do not include pkg.)

Zurn Wilins - 375L - Dimensions and Weights

Typical Installation

Local codes shall govern installation requirements. To be installed in accordance with the manufacturers’ instructions and the latest edition of the Plumbing Code of Australia and/or AS/NZS 3500. 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.

Zurn Wilins - 375L - Typical Installation

Zurn Wilins - 375L - Typical Installation

Zurn Wilkins - 375L Series - Backflow Preventer - Repair Kits

Product Code Size Description
RK212-350 65-80mm Model 350/375L - Repair Kit - Check Rubbers only (Suits Ductile and Stainless)
RK4-350 100mm Model 350/375L - Repair Kit - Check Rubbers only (Suits Ductile and Stainless)
RK6-350 150mm Model 350/375L - Repair Kit - Check Rubbers only (Suits Ductile and Stainless)
RK8-350 200-300mm Model 350/375L - Repair Kit - Check Rubbers only (Suits Ductile and Stainless)
RK212-375 65-150mm Model 375L - Relief Only - Repair Kit Complete (Suits Ductile and Stainless)
RK212-375R 65-150mm Model 375L - Relief Rubber Only - Repair Kit (Suits Ductile and Stainless)
RK8-375 200-250mm Model 375L - Relief Only - Repair Kit Complete (Suits Ductile and Stainless)
RK8-375R 200-250mm Model 375L - Relief Rubber Only - Repair Kit (Suits Ductile and Stainless)
212-350-R
Pos. Description Qty
1 Seal Ring for Check Assembly #1 1
2 Seal Ring for Check Assembly #2 1
3 O-Rings for Poppet Bolt 2
4 O-Ring for #1 Check 1
5 O-Ring for #2 Check 1
RK4-350
Pos. Description Qty
1 Seal Ring for Check Assembly #1 1
2 Seal Ring for Check Assembly #2 1
3 O-Rings for Poppet Belt 8
4 O-Rings for Checks 2
5 O-Rings for AST valves 2
RK6-350
Pos. Description Qty
1 O-Ring for #1 Check 1
2 O-Ring for #2 Check 1
3 O-Rings for Poppet Bolt 8
4 Seal Ring for Check Assembly #1 1
5 Seal Ring for Check Assembly #2 1
6 Lubricant 2
RK8-350
Pos. Description Qty
1 O-Ring for #1 Check 1
2 O-Ring for #2 Check 1
3 O-Rings for Poppet Bolt 8
4 Seal Ring for Check Assembly #1 1
5 Seal Ring for Check Assembly #2 1
RK212375-Product image
Pos. Description Qty
1 Diaphragm 1
2 Relief Valve Spring 1
3 O-Ring for Upper Plunger 1
4 Seal Ring for Relief Valve 1
5 O-Ring for Seat 1
6 O-Ring for Relief Valve 1
7 Lubricant 1
RK212375R-Product image
Pos. Description Qty
1 Diaphragm 1
2 Seal Ring for Relief Valve 1
3 O-Ring for Upper Plunger 1
4 O-Ring for Seat 1
5 O-Ring for Relief Valve 1
6 Lubricant 1
RK8-375 - how to order image
Pos. Description Qty
1 Relief Valve Spring 1
2 Seal Ring for Relief Valve 1
3 O-Ring for Relief Valve Seat 1
4 O-Ring for Relief Valve 1
5 Diaphragm 1
6 O-Ring for Upper Plunger 1
RK8-375R - how to order image
Pos. Description Qty
1 Diaphragm 1
2 Seal Ring for Relief Valve 1
3 O-Ring for Relief Valve Seat 1
4 O-Ring for Relief Valve 1
5 O-Ring for Upper Plunger 1
6 Lubricant 1


Zurn Wilkins - 375L Series - Backflow Preventer - Spare Parts

375L - Spare Parts - How to Order
Pos. Product Code Size Description
1 3707-300 65-80mm Check Assembly #1
2 3507-300A 65-80mm Check Assembly #2
3 3709-300 100mm Check Assembly #1
4 3509-300B 100mm Check Assembly #2
5 3710-300 150mm Check Assembly #1
6 3510-300B 150mm Check Assembly #2
7 3712-300 200-300mm Check Assembly #1
8 3512-300B 200-300mm Check Assembly #2

Zurn Wilkins - 375L Series - Backflow Preventer - Device Only

High Hazard, High-Performance, Low Head Loss Backflow Preventer

Zurn Wilkins - 375L - How to Order
Product Code Size Description
375L065 65mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 - Flanged to AS2129 Table D/E
375L080 80mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 - Flanged to AS2129 Table D/E
375L100 100mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 - Flanged to AS2129 Table D
375L150 150mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 - Flanged to AS2129 Table D/E
375L200 200mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 - Flanged to AS2129 Table D/E
375L250 250mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 - Flanged to AS2129 Table D

Note: Strainer and Valves are supplied loose, not including dressing sets or assembly

375L+S
Product Code Size Description
375L065+S 65mm High Hazard, Reduce Pressure Zone Backflow Preventer - Model 375 + Y Strainer - Flanged to AS2129 Table D/E
375L080+S 80mm High Hazard, Reduce Pressure Zone Backflow Preventer - Model 375 + Y Strainer - Flanged to AS2129 Table D/E
375L100+S 100mm High Hazard, Reduce Pressure Zone Backflow Preventer - Model 375 + Y Strainer - Flanged to AS2129 Table D
375L150+S 150mm High Hazard, Reduce Pressure Zone Backflow Preventer - Model 375 + Y Strainer - Flanged to AS2129 Table D/E
375L200+S 200mm High Hazard, Reduce Pressure Zone Backflow Preventer - Model 375 + Y Strainer - Flanged to AS2129 Table D/E
375L250+S 250mm High Hazard, Reduce Pressure Zone Backflow Preventer - Model 375 + Y Strainer - Flanged to AS2129 Table D

Note: Strainer and Valves are supplied loose, not including dressing sets or assembly

375L+SV
Product Code Size Description
375L065+SV 65mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Gate Valves - Flanged to AS2129 Table D/E
375L080+SV 80mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Gate Valves - Flanged to AS2129 Table D/E
375L100+SV 100mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Gate Valves - Flanged to AS2129 Table D
375L150+SV 150mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Gate Valves - Flanged to AS2129 Table D/E
375L200+SV 200mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Gate Valves - Flanged to AS2129 Table D/E
375L250+SV 250mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Gate Valves - Flanged to AS2129 Table D

Note: Strainer and Valves are supplied loose, not including dressing sets or assembly

375L+SBV
Product Code Size Description
375L065+SBV 65mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Butterfly Valves - Flanged to AS2129 Table D/E
375L080+SBV 80mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Butterfly Valves - Flanged to AS2129 Table D/E
375L100+SBV 100mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Butterfly Valves - Flanged to AS2129 Table D
375L150+SBV 150mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Butterfly Valves - Flanged to AS2129 Table D/E
375L200+SBV 200mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Butterfly Valves - Flanged to AS2129 Table D/E
375L250+SBV 250mm High Hazard, Reduced Pressure Zone Backflow Preventer - Model 375 + Y Strainer + Butterfly Valves - Flanged to AS2129 Table D



Zurn Wilkins - 375SPD Series, Stainless Steel - Backflow Preventer

High Hazard, High-Performance, Low Head Loss, Corrosion Resistant Backflow Preventer

375SPD-How to order
Product Code Size Description
375SPD100 100mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375SPD - Flanged to AS2129 Table D
375SPD150 150mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375SPD - Flanged to AS2129 Table D/E

Note: Strainer and Valves are supplied loose, not including dressing sets or assembly

Product Code Size Description
375SPD100+S 100mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375SPD + Y Strainer - Flanged to AS2129 Table D
375SPD150+S 150mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375SPD + Y Strainer - Flanged to AS2129 Table D/E
375SPD100+SV 100mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375SPD + Y Strainer + Gate Valves - Flanged to AS2129 Table D
375SPD150+SV 150mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375SPD + Y Strainer + Gate Valves - Flanged to AS2129 Table D/E
375SPD100+SBV 100mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375SPD + Y Strainer + Butterfly Valves - Flanged to AS2129 Table D
375SPD150+SBV 150mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375SPD + Y Strainer + Butterfly Valves - Flanged to AS2129 Table D/E



Zurn Wilkins - 375DAL Series, Ductile Iron - Reduced Pressure Detector Assembly

Testable double-check assembly with 20mm Sensus water meter and testable double-check assembly bypass with lockable ball valves.

Product Code Size Description
375DAL050 50mm Backflow Preventer Assembly and Detector Check - BSP Only
375DAL065 65mm Backflow Preventer Assembly and Detector Check - Ductile Iron, Flanged Only
375DAL080 80mm Backflow Preventer Assembly and Detector Check - Ductile Iron, Flanged Only
375DAL100 100mm Backflow Preventer Assembly and Detector Check - Ductile Iron, Flanged Only
375DAL150 150mm Backflow Preventer Assembly and Detector Check - Ductile Iron, Flanged Only
375DAL200 200mm Backflow Preventer Assembly and Detector Check - Ductile Iron, Flanged Only
375DAL250 250mm Backflow Preventer Assembly and Detector Check - Ductile Iron, Flanged Only



Zurn Wilkins - 375ASTL Series, Stainless Steel - Backflow Preventer

High Hazard, High-Performance, Low-Head Loss, Corrosion Resistant Backflow Preventer

375ASTL-How to order
Product Code Size Description
375ASTL100 100mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375ASTL - Grooved
375ASTL150 150mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375ASTL - Grooved
375ASTL200 200mm High Hazard, Stainless Steel, Double Check Backflow Preventer - Model 375ASTL - Grooved

Available in AS4087-2011 PN16 Flange/Flanges or Grooved Connections



Zurn Wilkins - 375ASTDAL Series, Stainless Steel - Reduced Pressure Detector Assembly

Testable double-check assembly with 20mm Sensus water meter and testable double-check assembly bypass with lockable ball valves.

New Zealand Insurance Council approved for fire lines.

Deeco - 375DA - How to Order
Product Code Size Description
375ASTDAL100 100mm Backflow Preventer Assembly and Detector Check - Stainless Steel, Grooved
375ASTDAL150 150mm Backflow Preventer Assembly and Detector Check - Stainless Steel, Grooved
375ASTDAL200 200mm Backflow Preventer Assembly and Detector Check - Stainless Steel, Grooved

Available in AS4087-2011 PN16 Flange/Flanges or Grooved Connections



Additional Accessories

Epoxy Coated with Stainless Steel Screen. Flange/Flange - AS2129 Table D

Zurn Y strainer
Prooduct Code Size Description
YS065 65mm Flanged Y Strainer, FBE Coated, Flange/Flange - AS2129 Table D/E
YS080 80mm Flanged Y Strainer, FBE Coated, Flange/Flange - AS2129 Table D/E
YS100 100mm Flanged Y Strainer, FBE Coated, Flange/Flange - AS2129 Table D
YS150 150mm Flanged Y Strainer, FBE Coated, Flange/Flange - AS2129 Table D/E
YS200 200mm Flanged Y Strainer, FBE Coated, Flange/Flange - AS2129 Table D/E
YS250 250mm Flanged Y Strainer, FBE Coated, Flange/Flange - AS2129 Table D/E
Gate Valve
Prooduct Code Size Description
NRS065 65mm Isolating Gate Valve c/w Handle Wheel and Non-Rising Stem. Full Bore AS4087 PN16. Flange / Flange
NRS080 80mm Isolating Gate Valve c/w Handle Wheel and Non-Rising Stem. Full Bore AS4087 PN16. Flange / Flange
NRS100 100mm Isolating Gate Valve c/w Handle Wheel and Non-Rising Stem. Full Bore AS4087 PN16. Flange / Flange
NRS150 150mm Isolating Gate Valve c/w Handle Wheel and Non-Rising Stem. Full Bore AS4087 PN16. Flange / Flange
NRS200 200mm Isolating Gate Valve c/w Handle Wheel and Non-Rising Stem. Full Bore AS4087 PN16. Flange / Flange
NRS250 250mm Isolating Gate Valve c/w Handle Wheel and Non-Rising Stem. Full Bore AS4087 PN16. Flange / Flange
Butterfly Valves - Image
Prooduct Code Size Description
BV050 50mm Wafer (Universal) Epoxy Coated CI Body, SS316 Disc, EPDM Seat, c/w Notched Lever Handle
BV065 65mm Wafer (Universal) Epoxy Coated CI Body, SS316 Disc, EPDM Seat, c/w Notched Lever Handle
BV080 80mm Wafer (Universal) Epoxy Coated CI Body, SS316 Disc, EPDM Seat, c/w Notched Lever Handle
BV100 100mm Wafer (Universal) Epoxy Coated CI Body, SS316 Disc, EPDM Seat, c/w Notched Lever Handle
BV150 150mm Wafer (Universal) Epoxy Coated CI Body, SS316 Disc, EPDM Seat, c/w Notched Lever Handle
BV200 200mm Wafer (Universal) Epoxy Coated CI Body, SS316 Disc, EPDM Seat, c/w Notched Lever Handle
BV250 250mm Wafer (Universal) Epoxy Coated CI Body, SS316 Disc, EPDM Seat, c/w Notched Lever Handle
Fireline
Prooduct Code Size Description
RSM100 100mm Gate Valve - Table D/E Flange Type or Grooved - with Tamper Switch
RSM150 150mm Gate Valve - Table D/E Flange Type or Grooved - with Tamper Switch
RSM200 200mm Gate Valve - Table D/E Flange Type or Grooved - with Tamper Switch
SBOV100 100mm Grooved Butterfly Valve with Tamper Switch
SBOV150 150mm Grooved Butterfly Valve with Tamper Switch
SBOV200 200mm Grooved Butterfly Valve with Tamper Switch

Grooved Connection, High Performance Welding Strainer.

WS
Prooduct Code Size Description
100WS2000 100mm Welding Strainer 500-2,000 l/m
150WS4000 150mm Welding Strainer ~4,000 l/m
150WS4500 150mm Welding Strainer ~4,500 l/m
150WS5000 150mm Welding Strainer 5,000 l/m
200WS6000 200mm Welding Strainer ~6,000 l/m
200WS6500 200mm Welding Strainer 6,500 l/m
200WS7000 200mm Welding Strainer 7,000 l/m
200WS7500 200mm Welding Strainer 7,500 l/m

To suit 350/375 ASTL Grooved backflow devices and grooved gate valves, butterfly valves or welding strainer.

rggf
Prooduct Code Size Description
GC100 100mm Roll Groove / Roll Groove Rigid Coupler - Galvanised
GC150 150mm Roll Groove / Roll Groove Rigid Coupler - Galvanised
GC200 200mm Roll Groove / Roll Groove Rigid Coupler - Galvanised
RGFA100 100mm Roll Groove Fixed Flange Adaptor - Table E - Galvanised
RGFA150 150mm Roll Groove Fixed Flange Adaptor - Table E - Galvanised
RGFA200 200mm Roll Groove Fixed Flange Adaptor - Table E - Galvanised
RGGF100 100mm Roll Groove Hinged Flange Adaptor - Table E - Galvanised
RGGF150 150mm Roll Groove Hinged Flange Adaptor - Table E - Galvanised
RGGF200 200mm Roll Groove Hinged Flange Adaptor - Table E - Galvanised

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