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

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

100-250mm

Connection:

Grooved

Product Description

The Zurn Wilkins 375 ASTL series is a high-hazard, High-Performance, Low Head Loss, Corrosion resistant Backflow Preventer, designed for installation on potable water lines to protect against both back siphonage and backpressure of contaminated water into the potable water supply.

Features and Benefits

  • Short lay-length for small space installation
  • Reliable performance and improved flow characteristics from patented
    Compound Check, allowing for installation in lower-pressure systems.
  • Available as backflow replacements/retrofit 375ASTR for a custom length, drop-in
    replacement.
  • Ideal for any backflow replacement
  • Lower maintenance costs from corrosion resistance of the stainless body
  • Available in flanged, grooved, or grooved X-flanged end connections for
    installation versatility

Typical Application

Designed for installation on potable water lines to protect against both back siphonage and back pressure of contaminated water into the potable water supply. Model 375 AST provides high-level protection where a potential health hazard exists, ideal for use where lead-free valves are required.

Standard Compliance (Horizontal Only)

  • ASSE® Listed 1013
  • FM® Approved
  • UL® Classified
  • C-UL® Classified
  • CSA® Certified
  • IAPMO® Listed
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • NSF® Listed-Standard 61, Annex G*
  • Certified to NSF/ANSI 372* by IAPMO R&T
  • Watermark Approval

*(0.25% Max. weighted average lead content)

Standard Compliance

Technical Data

  • Sizes: 100, 150, 200, 250mm
  • Maximum Working Water Pressure: 12 Bar
  • Maximum Working Water Temperature: 60°C
  • Hydrostatic Test Pressure: 24 Bar
  • End Connection: Grooved for Clamp System AWWA C606

Materials

  • Main Valve Body: 304L Stainless Steel
  • Access Covers: 304L Stainless Steel
  • Internals: Stainless Steel, 300 Series NORYL, NSF Listed
  • Fasteners and Springs: Stainless Steel, 300 Series
  • Seal Ring: EPDM (FDA Approved)
  • O-Ring: Buns Nitrile (FDA Approved)
  • Sensing Line: Stainless Steel, braided hose.

Flow Characteristics

Model 375 AST 4" (Standard and Metric)

Flow Rates(l/s)

375 - Flow Chart 1

Model 375AST 6”, 8" (Standard and Metric)

Flow Rates(l/h)

375 - Flow Chart 2

Dimensions and Weights

Dimensions and Weights - 375 ASTL
Dimensions - 375 ASTL

Technical Specifications

The Reduced Pressure Principle Backflow Prevention Assembly shall be certified to NSF/ANSI 372, ASSE® listed 1013, and installed with full port gate valves. The main body and access cover shall be 304L stainless steel, 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 and the relief valve shall be accessible for maintenance without removing the device from the line. The Reduced Pressure Principle Backflow Prevention Assembly shall be a Wilkins Model 375AST.

Typical Installation

Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted at a minimum of 305mm (12") and a maximum of 762mm (30") 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.

375 ASTL - Typical Installation

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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