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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)

Model 350/375L - Repair Kit - Check Rubbers only (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

Model 350/375L - Repair Kit - Check Rubbers only (Suits Ductile and Stainless)

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

Model 350/375L - Repair Kit - Check Rubbers only (Suits Ductile and Stainless)

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

Model 350/375L - Repair Kit - Check Rubbers only (Suits Ductile and Stainless)

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

Model 375L - Relief Only - Repair Kit Complete (Suits Ductile and Stainless)

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

Model 375L - Relief Rubber Only - Repair Kit (Suits Ductile and Stainless)

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

Model 375L - Relief Only Repair Kit Complete (Suits Ductile and Stainless)

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

Model 375L - Relief Rubber Only - Repair Kit (Suits Ductile and Stainless)

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

Check Assembly

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

Check Retainers

Pos. Product Code Size Description

1

3507-14F

65-80mm

Seat Retainer #1 Check

2

3507-14G

65-80mm

Seat Retainer #2 Check

3

3509-14B

100mm

Seat Retainer #1 Check

4

3509-140

100mm

Seat Retainer #2 Check

5

3510-14B

150mm

Seat Retainer #1 Check

6

3510-140

150mm

Seat Retainer #2 Check

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

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

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

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

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

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

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

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.

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

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

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

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

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

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.

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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