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

Item Number: 4-ZW205FPG
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$11,309.44
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Valve Type: Pressure Relief / Pressure Sustaining
  • Nominal Pipe Size: 4 inch
  • End Connections: ANSI Class 150 Flanged
  • Body Material: Ductile Iron ASTM A536
  • Blue Epoxy Coated, FDA Approved
  • Pilot Spring Range: 50-200 psi
  • Certified to NSF/ANSI/CAN 61
  • Stainless Steel Seat and Trim

Description

The Zurn Wilkins Model ZW205 is a 4-inch pressure relief and pressure sustaining valve with a globe body and ANSI Class 150 flanged connections. It is engineered to maintain a pre-determined upstream pressure by modulating between closed and open positions, relieving excess pressure as needed. Constructed with a ductile iron body and stainless steel internal components, this valve features a blue epoxy coating that is FDA approved. Standard inclusions like a wye strainer, isolation valves, and an inlet pressure gauge simplify installation and maintenance. The valve is certified to NSF/ANSI/CAN 61 for potable water applications, ensuring a lead-free solution. Item number 4-ZW205FPG.

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Connections

  • This Zurn Wilkins ZW205 valve features ANSI Class 150 Flanged end connections, designed for secure and reliable integration into piping systems using corresponding ANSI Class 150 flanges.

Installation Orientation

  • For optimal performance and ease of maintenance, the valve should be installed horizontally with the valve cover up. This orientation is especially critical for 6-inch and larger valves to facilitate proper air bleeding from the cover.
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Additional Details

The Zurn Wilkins Model ZW205 Pressure Relief / Pressure Sustaining Valve is designed for applications requiring the maintenance of a pre-determined upstream pressure in the system. It modulates to relieve excess pressure or sustain upstream pressure by remaining closed until the set point is exceeded.

Function

  • Maintains a pre-determined upstream pressure.
  • Modulates between closed and open to relieve excess pressure (relief) or sustain upstream pressure.

Standard Features

  • Blue Epoxy Coated for corrosion resistance and durability.
  • FDA Approved coating.
  • Includes a complete Pilot Assembly.
  • Features a "Wye" Type Strainer for debris protection.
  • Equipped with Closing Speed Control (for sizes 1 1/4" - 4").
  • Comes with Isolation Valves for maintenance.
  • Includes an Inlet Pressure Gauge.
  • Features ANSI Class 150 Flanges.
  • Uses Copper Tubing and Brass Fittings.

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

Certifications

  • Meets ANSI/AWWA C530 standards.
  • Certified to NSF/ANSI/CAN 61 for drinking water system components (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT).

Installation Note

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 to ensure proper air bleeding and ease of maintenance.

Specifications

  • Valve Type: Pressure Relief / Pressure Sustaining Valve
  • Body Style: Globe
  • Nominal Pipe Size: 4 inch
  • End Connections: ANSI Class 150 Flanged
  • Body Material: Ductile Iron ASTM A536
  • 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
  • Standard Pilot Spring Range: 50-200 psi
  • Minimum Inlet Pressure: 10 PSI
  • Temperature Rating: Water 33°F to 140°F

Certificates & Approvals

  • ANSI/AWWA C530
  • 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 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 when the set point is exceeded, or by remaining closed to sustain pressure.

What material is the main valve body made from?

The main valve body of the Zurn Wilkins ZW205 is constructed from Ductile Iron ASTM A536, ensuring durability and strength for demanding applications.

What type of end connections does this 4-inch ZW205 valve have?

This 4-inch ZW205 valve is equipped with ANSI Class 150 Flanged end connections, providing a robust and standard method for integration into flanged piping systems.

Is the Zurn Wilkins ZW205 valve suitable for potable water applications?

Yes, the Zurn Wilkins ZW205 valve is certified to NSF/ANSI/CAN 61, confirming its suitability for use in drinking water systems with a maximum weighted average lead content of 0.25%.

What is the recommended installation orientation for this valve?

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

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