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

Item Number: 3-ZW205FPG
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$8,237.20
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Size: 3 inch
  • Body Style: Globe
  • End Connection: ANSI Class 150 Flanged
  • Pilot Spring Range: 50-200 psi
  • Main Valve Body Material: Ductile Iron ASTM A536
  • Lead Free: NSF/ANSI/CAN 61 compliant
  • Features: Pilot assembly, wye strainer, isolation valves
  • Coating: Blue Epoxy Coated, FDA Approved

Description

The Zurn Wilkins Model ZW205 is a 3-inch pilot-operated pressure relief and sustaining valve with a globe-style body, designed for critical applications requiring precise upstream pressure control. It features ANSI Class 150 flanged end connections for secure installation in fire systems or other industrial settings. Standard features include a pilot assembly, wye strainer, isolation valves, and an inlet pressure gauge, all protected by a durable blue epoxy coating. Constructed with ductile iron and stainless steel components, this valve is NSF/ANSI/CAN 61 lead-free compliant, ensuring reliability and ease of maintenance. Item number 3-ZW205FPG.

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Connections

  • This valve features 3 inch ANSI Class 150 flanged end connections, designed to connect to compatible 3 inch ANSI Class 150 flanged piping systems.
  • The connections are standard for automatic control valves, providing reliable installation in various pipeline configurations.
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Additional Details

The Zurn Wilkins Model ZW205 Pilot Operated Pressure Relief / Pressure Sustaining Valve is designed for critical applications requiring the maintenance of a predetermined upstream pressure. This 3 inch globe body valve is ideal for fire applications, modulating to relieve excess pressure or sustain upstream pressure.

Operation & Features

  • Maintains a desired upstream set pressure by modulating between closed and open positions.
  • Opens to relieve excess pressure when upstream pressure exceeds the pilot assembly's set point.
  • Stays closed when upstream pressure is below the set point, sustaining pressure.
  • Includes a pilot assembly, "wye" type strainer, closing speed control, and isolation valves.
  • Features an inlet pressure gauge for easy monitoring.
  • All internal and external ferrous surfaces are coated with a high-quality, fusion epoxy coating for durability.
  • Designed for ease of maintenance and repair, contributing to a lower total cost of ownership.

Connections & Body Style

  • Features ANSI Class 150 flanged end connections for versatile installation.
  • Designed with a globe style body.

Caution: The recommended installation orientation for Automatic Control Valves (ACVs) is horizontal, with the valve cover up. 6" and larger valves should only be installed horizontally, due to the difficulty of properly bleeding air out of the cover and performing maintenance on valves installed in the vertical orientation.

Specifications

  • Product Type: Pilot Operated Pressure Relief / Pressure Sustaining Valve
  • Model: ZW205
  • Size: 3 inch
  • Body Style: Globe
  • End Connection: ANSI Class 150 Flanged
  • 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
  • Pilot Spring Range: 50-200 psi
  • Temperature Rating: Water 33°F to 140°F
  • Minimum Inlet Pressure: 10 PSI
  • Pressure Rating: 150 psi max (for 3" ANSI Class 150 Flanged)

Certificates & Approvals

  • Standards Compliance: ANSI/AWWA C530
  • Lead Free Compliance: NSF/ANSI/CAN 61 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

FAQs

What is the primary function of the Zurn Wilkins ZW205 valve?

The ZW205 is a pilot-operated pressure relief/pressure sustaining valve designed to maintain a predetermined upstream pressure. It modulates to relieve excess pressure or sustain pressure within the system.

What type of connections does this 3-inch ZW205 valve have?

This specific 3-inch ZW205 valve features ANSI Class 150 flanged end connections, providing a robust and standard method for installation into piping systems.

What materials are used for the main components of the ZW205?

The main valve body and bonnet are constructed from Ductile Iron ASTM A536. Key internal components like the disc guide, seat, stem, and spring are made from Stainless Steel, while the disc is Buna-N Rubber and the diaphragm is Nylon Reinforced Buna-N.

Is the ZW205 valve suitable for potable water applications?

Yes, the ZW205 valve is certified to NSF/ANSI/CAN 61, indicating it meets lead-free requirements and is suitable for applications where weighted average lead content must be 0.25% maximum. It also features FDA-approved blue epoxy coating.

What is the standard pilot spring range for this valve?

The standard pilot spring range for the ZW205 valve is 50-200 psi. Other pressure ranges may be available as options.

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