2 350 DC COMPOSITE VESSEL OSY FNPT X FNPT

Item Number: 2-350OSY
1 1
$7,545.76
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Model: Zurn Wilkins 350 Double Check Valve Assembly
  • Nominal Size: 2 1/2 inch
  • Connection Type: Female NPT x Female NPT
  • Shut-Off Valves: OS&Y Gate Valves
  • Pressure Vessel: UV Resistant Reinforced Nylon Composite EZSwap®
  • Body Material: Ductile Iron ASTM A 536
  • Max Working Pressure: 175 PSI
  • Lead-Free Compliance: NSF/ANSI/CAN 61 and 372

Description

The Zurn Wilkins Model 350 Double Check Valve Assembly with a 2 1/2 inch composite EZSwap® pressure vessel protects potable water lines from backsiphonage and backpressure in low health hazard, non-potable water applications. This lead-free unit features durable UV resistant reinforced nylon EZSwap® pressure vessel for easy maintenance and corrosion resistance. It includes stainless steel hardware and a fully epoxy coated ductile iron body for extended life. With a maximum working pressure of 175 PSI and FNPT x FNPT connections with OS&Y gate valves, it offers reliable performance and versatile installation.

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Connections

This Zurn Wilkins 350 Double Check Valve Assembly features 2 1/2 inch Female NPT (National Pipe Taper) threaded connections on both the inlet and outlet. These connections are designed to mate with 2 1/2 inch Male NPT threads for secure and leak-free installation. The unit is equipped with OS&Y (Outside Stem and Yoke) gate shut-off valves, which provide clear visual indication of whether the valve is open or closed, aiding in system control and maintenance.

Installation Versatility

Its short lay-length allows for versatile installation even in compact spaces. The EZSwap® removable pressure vessel simplifies maintenance, line flushing, and winterization.

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Additional Details

The Zurn Wilkins Model 350 Double Check Valve Assembly with a 2 1/2 inch composite EZSwap® pressure vessel is designed to protect potable water lines from backsiphonage and backpressure in low health hazard, non-potable water applications. It is ideal for installations requiring a lead-free solution.

Key Features

  • EZSwap® Removable Pressure Vessel: Features a durable UV resistant reinforced nylon composite vessel for simple, cost-effective maintenance, line flushing, winterization, and water savings.
  • Corrosion Resistance: Equipped with stainless steel shut-off valve handles, hardware, and struts, and a complete epoxy coating on the valve body for enhanced durability against harsh conditions and corrosion.
  • Ease of Maintenance: A single access cover simplifies servicing, reducing downtime and maintenance costs.
  • Compact Design: Offers a short lay-length and multiple connection options for versatile installation in tight spaces.
  • Reliable Performance: Incorporates a patented Compound Check for improved flow characteristics and dependable operation.

Application & Protection

  • Suitable for low health hazard, non-potable water applications.
  • Protects against both backsiphonage and backpressure of polluted water into the potable water supply.
  • Ideal for systems requiring lead-free valves.

Specifications

General

  • Model: 350 Double Check Valve Assembly
  • Nominal Size: 2 1/2 inch
  • Maximum Working Water Pressure: 175 PSI
  • Maximum Working Water Temperature: 140°F
  • Hydrostatic Test Pressure: 350 PSI

Materials

  • Main Valve Body: Ductile Iron ASTM A 536
  • Access Covers: Ductile Iron ASTM A 536
  • Coatings: NSF approved fusion epoxy finish
  • Internals: Stainless Steel, 300 Series
  • Fasteners: Stainless Steel, 300 Series
  • Seal Ring: EPDM (FDA approved)
  • O-Rings: Buna Nitrile (FDA approved)
  • Springs: Stainless Steel, 300 Series
  • Pressure Vessel: UV Resistant Reinforced Nylon Composite
  • Shut-Off Valve Handles/Hardware: Stainless Steel

Connections

  • Connection Type: Female NPT x Female NPT (FNPT x FNPT)
  • Shut-Off Valves: OS&Y Gate Valves

Certificates & Approvals

  • ASSE® Listed 1015
  • CSA® Certified B64.5
  • cUPC® Listed
  • AWWA Compliant C510, and C550
  • UL Classified
  • C-UL Classified
  • FM® Approved (2 1/2" - 10")
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • NYC MEA 350-01-M (2 1/2" - 3")
  • NYC MEA 297-98-M (4" - 6")
  • NYC MEA 316-01-M (8" - 10")
  • Meets the requirements of NSF/ANSI/CAN 61 and 372 (Less than 0.25% weighted average lead content)

FAQs

What is the primary function of the Zurn Wilkins Model 350 Double Check Valve Assembly?

It is designed to protect potable water lines from contamination caused by backsiphonage and backpressure of polluted water, specifically in low health hazard, non-potable water applications.

What are the connection types for this 2 1/2 inch Model 350 DCVA?

This model features 2 1/2 inch Female NPT (FNPT) threaded connections on both the inlet and outlet, and is equipped with OS&Y (Outside Stem and Yoke) gate shut-off valves.

What is the EZSwap® pressure vessel made of and what are its benefits?

The EZSwap® pressure vessel is made of durable UV resistant reinforced nylon composite. This design allows for simple, cost-effective maintenance, straightforward line flushing, quick winterization, and water savings.

What are the maximum operating pressure and temperature ratings for this backflow preventer?

The maximum working water pressure for this unit is 175 PSI, and the maximum working water temperature is 140°F.

Is this Zurn Wilkins Model 350 backflow preventer lead-free and what certifications does it hold?

Yes, it meets the requirements of NSF/ANSI/CAN 61 and 372 for lead-free content (less than 0.25% weighted average). It is also ASSE® Listed 1015, CSA® Certified B64.5, cUPC® Listed, AWWA Compliant C510, and UL/C-UL Classified, among others.