6 475 RPDA SS BODY N PATTERN BFLY GRV X GRV

Item Number: 6-475STDABG
1 1
$28,131.12
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Size: 6 inch
  • Valve Type: Butterfly with Supervisory Switches
  • End Connections: Grooved x Grooved
  • Body Material: 304L Stainless Steel
  • Maximum Working Pressure: 175 psi
  • ASSE® Listed 1047, CSA B64.4, NSF/ANSI/CAN 61
  • Metered by-pass for leak detection
  • Designed for fire protection systems

Description

The Wilkins 475STDA 6 inch Reduced Pressure Detector Assembly is engineered for fire protection systems, preventing backsiphonage and backpressure of contaminated water into potable supplies. Featuring a durable 304L stainless steel body, this model resists corrosion and ensures longevity. It is equipped with grooved end butterfly valves with integral supervisory switches and includes a metered bypass for leak detection. Certified by ASSE 1047, CSA B64.4, and NSF/ANSI/CAN 61, it provides reliable backflow protection with minimal pressure drop for new installations or as a direct drop-in replacement. Item number 6-475STDABG.

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Connections and Compatibility

The Wilkins 475STDA 6 inch Reduced Pressure Detector Assembly is equipped with grooved end connections on both the inlet and outlet sides, designed for secure attachment to steel piping systems. This configuration allows for straightforward installation in fire protection systems. The integrated metered by-pass assembly is a 3/4 inch Model 975XLDTCU. When installing, ensure all connections adhere to local plumbing codes and manufacturer instructions for proper function and approval compliance.

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Additional Details

The Wilkins 475STDA 6 inch Reduced Pressure Detector Assembly is designed for new installations or direct drop-in replacement on water lines in fire protection systems. This backflow preventer protects against backsiphonage and backpressure of contaminated water into the potable water supply, featuring a metered bypass to detect leaks and unauthorized water use.

This model features a stainless steel body and butterfly valves with grooved end connections, providing corrosion resistance and a compact footprint for various applications.

Key Features

  • Body Material: Constructed from 304L Stainless Steel for superior corrosion resistance and extended product life.
  • Valve Type: Equipped with grooved end butterfly valves that include integral supervisory switches for reliable operation and monitoring.
  • Flow Pattern: Features an n-pattern design, which is compatible with common n-pattern valve lay-lengths for easy drop-in replacements.
  • Low Pressure Drop: Patented compound checks ensure an ultra-low pressure drop, potentially reducing the need for a booster pump.
  • Maintenance: Time-tested check and relief valve components allow for easy maintenance, maximizing water system uptime.
  • Installation: Designed for fire protection applications, offering both new installation and direct drop-in replacement convenience.

Connections

  • End Connections: Grooved x Grooved for steel pipe, ensuring secure and reliable system integration.
  • By-Pass: Includes a metered by-pass (3/4 inch Model 975XLDTCU) for leak detection and monitoring of unauthorized water usage.

Specifications

  • Product Type: Reduced Pressure Detector Assembly
  • Model: 475STDA
  • Nominal Size: 6 inch
  • Valve Type: Butterfly Valves with Integral Supervisory Switches
  • End Connections: Grooved x Grooved
  • Body Material: 304L Stainless Steel
  • Access Cover Material: 304L Stainless Steel
  • Internal Components: Stainless steel, 300 Series NORYL™, NSF Listed
  • Fasteners & Springs Material: Stainless Steel, 300 Series
  • Elastomers: EPDM (FDA approved), Buna Nitrile (FDA approved)
  • Polymers: NORYL™, NSF Listed
  • Sensing Line: Stainless steel, braided hose
  • By-Pass Assembly: 3/4 inch Model 975XLDTCU

Performance Ratings

  • Maximum Working Water Pressure: 175 psi
  • Minimum Working Water Pressure: 25 psi
  • Maximum Working Water Temperature: 140° F
  • Minimum Working Water Temperature: 33° F
  • Hydrostatic Test Pressure: 350 psi

Certificates & Approvals

  • ASSE® Listed 1047
  • AWWA Compliant C550
  • CSA B64.4 Certified
  • UL® Classified
  • C-UL® Classified
  • FM® Approved
  • NSF/ANSI/CAN 61* (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
  • Approved by Foundation for Cross Connection Control and Hydraulic Research at University of Southern California (VUVD and VUVU orientations)

Dimensions & Weight (Approximate)

  • Weight (with Butterfly Valves, Grooved x Grooved): 201 lbs (91 kg)
  • A Dimension: 16 in (406 mm)
  • B Dimension (with Butterfly Valves): 27 7/8 in (708 mm)
  • D Dimension (with Butterfly Valves): 10 1/4 in (260 mm)
  • E Dimension (with Butterfly Valves): 22 3/8 in (570 mm)

FAQs

What is the primary application for the Wilkins 475STDA 6 inch RPDA?

This Reduced Pressure Detector Assembly is primarily used in fire protection systems to prevent contaminated water from flowing back into the potable water supply due to backsiphonage or backpressure. It is suitable for both new installations and as a direct drop-in replacement.

What type of valves and connections does this model feature?

The Wilkins 475STDA 6 inch RPDA is equipped with grooved end butterfly valves, which include integral supervisory switches. The end connections are grooved x grooved, designed for secure attachment to steel piping.

What is the body material of the 475STDA and what are its benefits?

The main valve body and access covers are made from 304L Stainless Steel. This material offers superior corrosion resistance, extending the product's lifespan and ensuring reliability in water system applications.

Does this backflow preventer include a bypass for leak detection?

Yes, the 475STDA includes a metered by-pass, specifically a 3/4 inch Model 975XLDTCU, designed to detect leaks and monitor unauthorized water use within the system.

What are the maximum operating pressure and temperature for this device?

The maximum working water pressure for the Wilkins 475STDA 6 inch RPDA is 175 psi, and the maximum working water temperature is 140° F.

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