8 450 DC SS BODY BFLY GRV X GRV

Item Number: 8-450STBG
1 1
$33,400.83
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Size: 8 inch
  • Body Material: 304L Stainless Steel
  • Connection Type: Grooved End Butterfly Valves with Integral Supervisory Switches
  • Maximum Working Pressure: 175 psi
  • Minimum Working Water Pressure: 20 psi
  • Corrosion Resistance: Superior stainless steel body
  • Certifications: ASSE® 1015, NSF/ANSI/CAN 61, CSA® Certified B64.5
  • Low Pressure Drop: Patented compound checks

Description

The Wilkins 8 inch 450ST Stainless Steel Double Check Valve Assembly provides essential backflow prevention for potable water lines where no health hazard exists. Constructed with a 304L stainless steel body for superior corrosion resistance, it is ideal for new installations or as a direct drop-in replacement. This model features grooved end butterfly valves with integral supervisory switches and patented compound checks for ultra-low pressure drop. Certified to ASSE 1015, NSF/ANSI/CAN 61, and CSA B64.5 standards, it ensures reliable performance with easy maintenance. Item number 8-450STBG.

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Connections and Compatibility

  • This Wilkins 450ST Double Check Valve Assembly is designed for grooved end connections, specifically featuring grooved end butterfly valves with integral supervisory switches.
  • It is suitable for direct drop-in replacement of existing competitor n-pattern valves or for new installations on potable water lines.
  • Proper installation must adhere to local codes, manufacturer's instructions, and the Uniform Plumbing Code, ensuring adequate drains and side clearance for testing and maintenance. The unit must not be submerged.
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Additional Details

The Wilkins 450ST is an 8 inch Stainless Steel Double Check Valve Assembly designed for new installations or as a direct drop-in replacement on potable water lines.

It provides crucial protection against backsiphonage and backpressure of polluted water, ensuring the integrity of the potable water supply in applications where a potential health hazard does not exist.

Construction & Features

  • Features a durable 304L Stainless Steel body and access covers, offering superior corrosion resistance and extended product life.
  • Equipped with grooved end butterfly valves that include integral supervisory switches, enabling robust system integration.
  • Compact footprint facilitates easy installation, especially for direct drop-in replacements, matching common n-pattern valve lay-lengths.
  • Patented compound checks ensure ultra-low pressure drop, as documented by approval authorities, which can reduce the need for a booster pump.
  • Time-tested check and relief valve components simplify maintenance, contributing to greater water system uptime.
  • The patented AR spool maintains agency approvals when factory-installed and is engineered for drop-in replacements.
  • An integrated backflow setter eliminates the requirement for concrete thrust blocks, leading to simpler installation and lower costs.

Specifications

  • Product Type: Double Check Valve Assembly
  • Size: 8 inch
  • Main Valve Body Material: 304L Stainless steel
  • Access Covers Material: 304L Stainless steel
  • Internals: Stainless steel, 300 Series; NORYLT™, NSF Listed
  • Fasteners and Springs Material: Stainless Steel, 300 Series
  • Seal Ring Material: EPDM (FDA approved)
  • O-ring Material: Buna Nitrile (FDA approved)
  • Maximum Working Water Pressure: 175 psi
  • Minimum Working Water Pressure: 20 psi
  • Maximum Working Water Temperature: 140° F
  • Minimum Working Water Temperature: 33° F
  • Hydrostatic Test Pressure: 350 psi

End Connections

  • Connection Type: Grooved End Butterfly Valves with Integral Supervisory Switches
  • Flange Standard (applicable for flanged options): AWWA C606
  • Bolt Pattern (applicable for flanged options): ASME B16.42 Class 150

Certificates & Approvals

  • Approved by: Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • Listing: ASSE® 1015
  • Compliance: AWWA C510 (with gates only), AWWA C550
  • Classification: UL® Classified
  • Classification: C-UL® Classified
  • Approval: FM® Approved
  • Certification: CSA® Certified B64.5
  • Meets Requirements: NSF/ANSI/CAN 61 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

FAQs

What is the primary purpose of the Wilkins 450ST Double Check Valve Assembly?

The primary purpose is to protect potable water lines from backsiphonage and backpressure of polluted water, specifically in applications where a potential health hazard does not exist.

What type of end connections does this specific 8-450STBG model use?

This model features grooved end butterfly valves with integral supervisory switches, designed for grooved steel pipe connections.

What materials are used for the main components of the 450ST assembly?

The main valve body and access covers are made of 304L Stainless Steel. Internals include Stainless steel 300 Series and NORYLT™, with EPDM (FDA approved) for seal rings and Buna Nitrile (FDA approved) for O-rings.

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

The maximum working water pressure is 175 psi, and the maximum working water temperature is 140° F.

Is this Wilkins 450ST valve certified by recognized standards organizations?

Yes, it is ASSE® Listed 1015, AWWA Compliant C510 and C550, UL® Classified, C-UL® Classified, FM® Approved, and CSA® Certified B64.5. It also meets NSF/ANSI/CAN 61 requirements for lead content.