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

Item Number: 2-ZW205FPG
1 1
$6,387.54
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Pressure Relief / Pressure Sustaining Valve
  • Body Type: Globe Style
  • End Connection: ANSI Class 150 Flanged
  • Main Valve Body Material: Ductile Iron ASTM A536
  • Pilot Spring Range: 50-200 psi
  • Coating: Blue Epoxy, FDA Approved
  • Includes: Wye Type Strainer, Isolation Valves, Pressure Gauge
  • Certifications: ANSI/AWWA C530, NSF/ANSI/CAN 61 Lead Free

Description

The Zurn Wilkins Model ZW205 is a pilot-operated pressure relief and pressure sustaining valve designed for fire protection and industrial applications. It ensures a consistent upstream pressure by modulating flow, acting as both a relief and sustaining valve. Key features include a durable ductile iron body, stainless steel internal components, and a blue epoxy coating. This model comes standard with ANSI Class 150 Flanges for connections, a pilot assembly with a wye strainer, isolation valves, and a pressure gauge. It meets ANSI/AWWA C530 and NSF/ANSI/CAN 61 lead-free standards. Item number 2-ZW205FPG.

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End Connections

  • The Zurn Wilkins ZW205 is equipped with ANSI Class 150 Flanges, designed to connect to compatible flanged piping systems.
  • The pilot system is supplied with Copper Tubing and Brass Fittings for its connections.

Installation Orientation

For optimal performance and maintenance, the recommended installation orientation is horizontal with the valve cover up. For valves 6 inches and larger, horizontal installation with the cover up is critical to properly bleed air and facilitate maintenance.

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Additional Details

The Zurn Wilkins Model ZW205 Pilot Operated Pressure Relief / Pressure Sustaining Valve is designed for applications where it is critical to maintain a pre-determined upstream pressure. This valve modulates between closed and open positions to maintain the desired upstream set pressure or relieve excess pressure by allowing flow through the valve.

Construction & Materials

  • The main valve body and bonnet are constructed from Ductile Iron ASTM A536 for durability.
  • The disc guide, seat, stem, and spring are all made from Stainless Steel.
  • The valve features a Buna-N Rubber disc and a Nylon Reinforced Buna-N diaphragm.
  • All internal and external ferrous surfaces are coated with a high quality, blue fusion epoxy coating that is FDA Approved.

Standard Features

  • Includes a comprehensive pilot assembly with a "Wye" Type Strainer, Closing Speed Control (for sizes 1 1/4" - 4"), and isolation valves.
  • Equipped with an Inlet Pressure Gauge.
  • Features ANSI Class 150 Flanges for connections.
  • Supplied with Copper Tubing and Brass Fittings for the pilot system.
  • Serves as both a pressure relief valve and a pressure sustaining valve.

Specifications

  • Model: ZW205
  • Function: Pressure Relief / Pressure Sustaining Valve
  • Body Type: Globe Style Body
  • 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

Performance

  • Pilot Spring Range: 50-200 psi
  • Minimum Inlet Pressure: 10 PSI
  • Temperature Rating: Water 33°F to 140°F

Connections

  • End Connection: Flanged
  • Flange Class: ANSI Class 150
  • Standard Fittings: Copper Tubing and Brass Fittings

Certificates & Approvals

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

FAQs

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

The primary function of the Zurn Wilkins Model ZW205 valve is to act as both a pressure relief and pressure sustaining valve. It maintains a pre-determined upstream pressure by relieving excess pressure or sustaining it as needed.

What type of end connections does the ZW205 valve utilize?

The ZW205 valve utilizes ANSI Class 150 Flanged end connections for secure integration into compatible piping systems.

What materials are used for the main components of this valve?

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

What is the recommended installation orientation for the ZW205 valve?

The recommended installation orientation for the ZW205 valve is horizontal with the valve cover facing upwards. This is especially important for 6-inch and larger valves to ensure proper air bleeding and ease of maintenance.

What are the standard features included with the ZW205 valve?

Standard features include a blue epoxy coated body (FDA approved), a complete pilot assembly with a "Wye" Type Strainer, closing speed control (for 1 1/4" - 4" sizes), isolation valves, an inlet pressure gauge, and copper tubing with brass fittings.