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

Item Number: 10-ZW205FPA
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$37,353.87
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Pilot Operated Pressure Relief / Pressure Sustaining Valve
  • Nominal Size: 10 inch
  • Body Style: Angle Style Body
  • Connection Type: ANSI Class 150 Flanged
  • Main Valve Body Material: Ductile Iron ASTM A536
  • Seat Material: Stainless Steel
  • Pilot Spring Range: 50-200 psi
  • Standards: ANSI/AWWA C530, NSF/ANSI/CAN 61

Description

The Zurn Wilkins Model ZW205 is a 10-inch pilot-operated pressure relief and pressure sustaining valve, designed for critical applications requiring stable upstream pressure. It effectively relieves excess pressure or maintains a pre-determined upstream pressure set point. This valve features a durable Ductile Iron Angle Style Body with ANSI Class 150 Flanged connections and a Stainless Steel seat. Standard features include blue epoxy coating, a "Wye" Type Strainer, isolation valves, an inlet pressure gauge, and a 50-200 psi pilot spring range. It is certified to ANSI/AWWA C530 and NSF/ANSI/CAN 61 standards, ensuring lead-free compliance and reliable performance for fire safety and industrial systems. Item number 10-ZW205FPA.

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Installation Guidance

  • This 10-inch automatic control valve should be installed horizontally with the valve cover facing upwards.
  • This horizontal orientation is critical for proper air bleeding from the cover and to facilitate easier maintenance.
  • Improper vertical installation for larger valves (6 inches and above) can lead to difficulties in air bleeding and maintenance.
  • Connects via ANSI Class 150 Flanged connections to compatible piping systems.
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Additional Details

The Zurn Wilkins Model ZW205 Pilot Operated Pressure Relief / Pressure Sustaining Valve is designed to maintain a pre-determined upstream pressure, making it ideal for critical applications where excess pressure needs to be relieved or upstream pressure needs to be sustained.

This 10-inch valve features an Angle Style Body and ANSI Class 150 Flanged connections, built with robust Ductile Iron and Stainless Steel components for durability.

Operation

  • Operates as a pressure relief valve by opening to relieve excess pressure when upstream pressure exceeds a set point.
  • Functions as a pressure sustaining valve by modulating between closed and open positions to maintain desired upstream pressure.

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

Standard Features

  • Blue Epoxy Coated, FDA Approved finish.
  • Includes a comprehensive Pilot Assembly with a "Wye" Type Strainer, Isolation Valves, and Inlet Pressure Gauge.
  • Pilot system utilizes Copper Tubing and Brass Fittings.
  • Standard pilot spring range for relief/sustaining: 50-200 psi.

Specifications

Valve Specifications

  • Model: ZW205
  • Valve Type: Pilot Operated Pressure Relief / Pressure Sustaining Valve
  • Body Style: Angle Style Body
  • Nominal Size: 10 inch
  • Connection Type: ANSI Class 150 Flanged
  • Temperature Rating: Water 33°F to 140°F
  • Pilot Spring Range: 50-200 psi
  • Minimum Inlet Pressure: 10 PSI

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
  • Pilot System Tubing: Copper
  • Pilot System Fittings: Brass

Certificates & Approvals

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

FAQs

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

The Zurn Wilkins Model ZW205 is a pilot-operated pressure relief and pressure sustaining valve. It is designed to maintain a pre-determined upstream pressure by either relieving excess pressure or sustaining pressure at a set point.

What are the main body and bonnet materials of the 10-inch ZW205 valve?

The main valve body and bonnet are constructed from durable Ductile Iron ASTM A536, providing robust performance for demanding applications.

What type of connections does this specific ZW205 valve use?

This 10-inch ZW205 valve features ANSI Class 150 Flanged connections, suitable for installation into compatible flanged piping systems.

What are the certification standards for the Zurn Wilkins ZW205?

The ZW205 valve is certified to ANSI/AWWA C530 and NSF/ANSI/CAN 61 standards, ensuring it meets industry requirements for performance and lead-free compliance.

What is the recommended installation orientation for this 10-inch ZW205 valve?

For optimal performance, especially with 6-inch and larger valves like this 10-inch model, horizontal installation with the valve cover facing up is recommended. This aids in proper air bleeding and maintenance.

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