6 ZW205 RELIEF/SUSTA FIRE VLV ANG BODY ANSI 150 FLG SS SEAT CPR TUBNG BRZ FTNGS

Item Number: 6-ZW205FPA
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$15,277.27
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Valve Size: 6 inch
  • Body Style: Angle Body
  • End Connection: ANSI Class 150 Flanged
  • Function: Pressure Relief / Sustaining
  • Pilot Spring Range: 50-200 psi
  • Body Material: Ductile Iron ASTM A536
  • Seat Material: Stainless Steel
  • Certifications: NSF/ANSI/CAN 61, Lead Free

Description

The Zurn Wilkins ZW205 is a 6 inch pilot-operated pressure relief and pressure sustaining valve, ideal for applications requiring precise upstream pressure control. This angle body valve features ANSI Class 150 flanged connections and a durable ductile iron construction with a stainless steel seat. It maintains system stability by relieving excess pressure or sustaining a minimum upstream pressure within a 50-200 psi range. Standard features include a wye strainer, isolation valves, and an inlet pressure gauge. The valve is blue epoxy coated, Lead Free, and NSF/ANSI/CAN 61 certified, offering reliability and ease of maintenance.

Help Me Connect

The Zurn Wilkins Model ZW205 valve features ANSI Class 150 Flanged end connections, designed for secure and reliable installation into a piping system with matching flanges. This pilot-operated valve senses upstream pressure to regulate flow. The pilot assembly, with its preset spring range, controls the main valve's opening and closing, ensuring stable system pressure by relieving excess pressure or sustaining a minimum upstream pressure.

Installation Considerations

  • Connects to ANSI Class 150 flanged piping systems.
  • Designed for inline installation to monitor and control upstream pressure.
  • For 6 inch and larger valves, install horizontally with the valve cover up to facilitate air bleeding and maintenance.
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Additional Details

The Zurn Wilkins Model ZW205 is a pilot-operated pressure relief and pressure sustaining valve engineered for critical applications requiring a predetermined upstream pressure to be maintained. This valve modulates to relieve excess pressure or sustain upstream pressure, ensuring system stability.

Key Features

  • Serves as both a pressure relief and pressure sustaining valve
  • Blue epoxy coated, FDA approved for durability and longevity
  • Includes a "Wye" type strainer, isolation valves, and an inlet pressure gauge for simplified start-up and maintenance
  • Equipped with closing speed control for smooth operation
  • Standard relief range of 50 to 200 psi, with other ranges available
  • Designed with an angle style body for versatile installation
  • Pilot system features copper tubing and brass fittings

Construction Materials

  • Main Valve Body: Ductile Iron ASTM A536
  • Main Valve Bonnet: Ductile Iron ASTM A536
  • Disc Guide: Stainless Steel
  • Seat: Stainless Steel
  • Disc: Buna-N Rubber
  • Diaphragm: Nylon Reinforced Buna-N
  • Stem: Stainless Steel
  • Spring: Stainless Steel

For 6 inch and larger valves, the recommended installation orientation is horizontal with the valve cover up, due to potential difficulty in bleeding air and performing maintenance in vertical orientations.

Specifications

  • Model: ZW205
  • Valve Size: 6 inch
  • Body Style: Angle
  • End Connection: ANSI Class 150 Flanged
  • Pilot System Tubing: Copper
  • Pilot System Fittings: Brass
  • Main Valve Body Material: Ductile Iron ASTM A536
  • Main Valve Bonnet Material: Ductile Iron ASTM A536
  • Disc Guide Material: Stainless Steel
  • Seat Material: Stainless Steel
  • Disc Material: Buna-N Rubber
  • Diaphragm Material: Nylon Reinforced Buna-N
  • Stem Material: Stainless Steel
  • Spring Material: Stainless Steel
  • Coating: Blue Epoxy Coated, FDA Approved
  • Temperature Rating: Water 33°F to 140°F
  • Pilot Spring Range: 50-200 psi
  • Minimum Inlet Pressure: 10 PSI

Certificates & Approvals

  • Standards Compliance: ANSI/AWWA C530
  • Certification: NSF/ANSI/CAN 61
  • Lead Content: 0.25% Max Weighted Average (Lead Free)

FAQs

What is the main function of the Zurn Wilkins Model ZW205 valve?

The Zurn Wilkins Model ZW205 functions as both a pressure relief and a pressure sustaining valve. It is designed to maintain a predetermined upstream pressure by either relieving excess pressure or sustaining a minimum pressure as needed.

What are the typical end connections for the 6-ZW205FPA model?

The 6-ZW205FPA model features 6 inch ANSI Class 150 Flanged end connections, providing a secure and versatile method for installation into compatible piping systems.

What is the standard pressure relief/sustaining range for this valve?

The standard pilot spring range for the Zurn Wilkins Model ZW205 is 50 to 200 psi, allowing for precise pressure regulation within this range. Other ranges may be available.

Is the ZW205 valve certified for potable water applications?

Yes, the Zurn Wilkins Model ZW205 valve is certified to NSF/ANSI/CAN 61 standards, confirming it meets requirements for drinking water system components and has a maximum weighted average lead content of 0.25%. It is also designated as Lead Free.

What materials are used for the main valve body and seat?

The main valve body is constructed from durable Ductile Iron ASTM A536, while the seat is made of Stainless Steel for corrosion resistance and longevity. The disc is Buna-N Rubber.

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