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Waterworks

Build and Industry

Fire Protection

Wilkins 375DA Series

The Zurn Wilkins 375DA Reduced Pressure Detector Assembly with epoxy coated ductile iron body provides high hazard protection and is ideal for fire protection applications, with a metered by-pass to detect leaks and unauthorized water use.

PRODUCT CODE:
375DAL XXX
SIZE RANGE:
50-200mm

FEATURES AND BENEFITS

  • Zurn Wilkins Compound Check provides low headloss
  • Lowest life cycle costs in the Backflow industry
  • Approved in horizontal and vertical positions

Specifications

The Reduced Pressure Detector Backflow Prevention Assembly shall be certified to NSF/ANSI 61, ASSE® Listed 1047, and supplied with full port OS & Y 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 and the relief valve shall be accessible for maintenance without removing the device from the line. The Reduced Pressure Detector Backflow Prevention Assembly shall be a ZURN WILKINS Model 375DA.

Application

Designed for installation on water lines in fire protection systems to protect against both backsiphonage and backpressure of contaminated water into the potable water supply. The Model 375DA shall provide protection where a potential health hazard exists. Incorporates metered by-pass to detect leaks and unauthorized water use.

Features

Sizes: 2 1/2”, 3”, 4”, 6”, 8”, 10”

Maximum working water pressure 175 PSI

Maximum working water temperature 140°F

Hydrostatic test pressure 350 PSI

End connections (Grooved for steel pipe) AWWA C606

(Flanged bolt pattern) ASME B16.42

Class 150

375DA Flow Characteristics

Typical Installation

Local codes shall govern installation requirements. To be installed in accordance with the manufacturer’s instructions and the latest edition of the Uniform Plumbing Code. 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.

375DA installation

Manual
Datasheet
Engineering Data

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Product code

Wilkins 375DA Series

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