3 450 DC DI BODY, N-PATTERN, GRV X GRV, LESS GATE VALVES

Item Number: 3-450L
1 1
$6,030.13
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Double Check Backflow Assembly Body
  • Nominal Size: 3 inch
  • Body Pattern: N-Pattern (Grooved x Grooved)
  • Body Material: Epoxy-coated Ductile Iron
  • Maximum Working Pressure: 175 PSI
  • Maximum Water Temperature: 140 °F
  • ASSE® Listed 1015
  • NSF/ANSI/CAN 61 Compliant

Description

The Zurn Wilkins Model 450 Double Check Backflow Assembly body, 3-inch N-pattern, with grooved connections, provides essential protection for potable water systems against low health hazard pollution. This durable unit prevents backsiphonage and backpressure, suitable for new and retrofit installations in compact spaces. It features an epoxy-coated ductile iron body, stainless steel internals, and a patented compound check for reliable performance and low headloss. Designed for easy maintenance with a single access cover, it is ASSE® Listed 1015, CSA B64.4, and NSF/ANSI/CAN 61 compliant. This specific SKU is supplied without gate valves.

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Connections

  • This Zurn Wilkins Model 450 Double Check Backflow Assembly body features 3-inch grooved end connections, designed for secure installation into compatible grooved piping systems.
  • The grooved connections conform to AWWA C606 standards for steel pipe.
  • This product is supplied as the backflow assembly body only, without gate valves, allowing for customization with separately purchased grooved gate valves.

Installation

Installation must adhere to local codes, manufacturer's instructions, and the latest edition of the Uniform Plumbing Code. Ensure adequate side clearance for testing and maintenance, and that the unit is not submerged.

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Additional Details

The Zurn Wilkins Model 450 Double Check Backflow Assembly body is designed for installation on potable water lines to protect against backsiphonage and backpressure of polluted water in low health hazard applications. Featuring a 3-inch grooved x grooved n-pattern body, this assembly is ideal for new and retrofit installations in compact locations and is supplied without gate valves.

Features and Benefits

  • Low Health Hazard Protection: Safeguards potable water from pollution where a potential health hazard does not exist.
  • Compact N-Pattern Design: Ideal for installations in tight spaces and retrofit projects.
  • Patented Compound Check: Provides reliable performance with low headloss and superior flow characteristics.
  • Easy Maintenance: Features a single access cover to minimize downtime for servicing.
  • Corrosion-Resistant Construction: Main valve body and access covers are made from epoxy-coated ductile iron (ASTM A536 Grade 4) for durability.
  • Durable Internal Components: Includes stainless steel fasteners (300 Series) and springs (300 Series), NORYL™ seat ring and check valve, and EPDM (FDA approved) seat disc elastomers.
  • Center Stem Guided Design: Incorporates two torsion springs to bias the check in the closed position.

Specifications

  • Model: Zurn Wilkins Model 450
  • Type: Double Check Backflow Assembly Body
  • Nominal Size: 3 inch
  • Body Pattern: N-Pattern
  • End Connections: Grooved x Grooved (AWWA C606)
  • Maximum Working Pressure: 175 PSI
  • Maximum Working Water Temperature: 140 °F
  • Hydrostatic Test Pressure: 350 PSI

Materials

  • Main Valve Body: Epoxy-coated Ductile Iron (ASTM A536 Grade 4)
  • Access Covers: Epoxy-coated Ductile Iron (ASTM A536 Grade 4)
  • Seat Ring/Check Valve: NORYL™
  • Stem: Stainless Steel (ASTM A 276)
  • Elastomers: EPDM (FDA Approved), Buna Nitrile (FDA approved)
  • Springs: Stainless Steel (300 Series)
  • Fasteners: Stainless Steel (300 Series)

Certificates & Approvals

  • ASSE® Listed 1015
  • IAPMO® Listed
  • CSA B64.4
  • AWWA Compliant C510
  • AWWA Compliant C550
  • UL® Classified
  • C-UL® Classified
  • FM® Approved
  • NYC MEA 213-99-M VOL 3
  • NSF/ANSI/CAN 61 Compliant
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California

FAQs

What is the primary application for the Zurn Wilkins Model 450 Double Check Backflow Assembly?

It is used in low health hazard applications to protect potable water supplies from pollution caused by backsiphonage and backpressure. It is ideal for installations where a potential health hazard does not exist.

What type of connections does this specific Model 450 backflow assembly body have?

This model features 3-inch grooved x grooved end connections, designed for compatibility with grooved piping systems. These connections conform to AWWA C606 standards.

What materials are used for the main body and internal components of this backflow preventer?

The main valve body and access covers are made of epoxy-coated ductile iron (ASTM A536 Grade 4). Internal components include stainless steel fasteners and springs, NORYL™ seat ring/check valve, and EPDM (FDA approved) elastomers.

Does this SKU (3-450L) include gate valves?

No, this specific SKU is supplied as the backflow assembly body only and does not include gate valves. Gate valves would need to be purchased separately for a complete installation.

What are the key certifications for the Zurn Wilkins Model 450?

The Zurn Wilkins Model 450 is ASSE® Listed 1015, IAPMO® Listed, CSA B64.4, AWWA Compliant C510 and C550, and meets the requirements of NSF/ANSI/CAN 61 for lead content.