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

Item Number: 3-ZW205FPA
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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
  • Valve Type: Pilot Operated Pressure Relief / Pressure Sustaining
  • Main Valve Body Material: Ductile Iron ASTM A536
  • End Connection: 3 inch ANSI Class 150 Flanged
  • Body Style: Angle
  • Pilot Spring Range: 50-200 psi
  • Temperature Rating: Water 33°F to 140°F
  • Lead Free and NSF/ANSI/CAN 61 Certified
  • Standard Features: Pressure gauge, wye strainer, isolation valves

Description

The Zurn Wilkins Model ZW205 is a 3-inch pilot-operated pressure relief and pressure sustaining valve featuring an angle body and ANSI Class 150 flanged connections. Designed to maintain a predetermined upstream pressure, this valve modulates to relieve excess pressure when set points are exceeded. It includes a wye strainer, isolation valves, and an inlet pressure gauge as standard features. Constructed with a ductile iron body and stainless steel seat, it is blue epoxy coated for durability and ease of maintenance. The ZW205 is certified to NSF/ANSI/CAN 61 and ANSI/AWWA C530 standards for lead-free use. Item number 3-ZW205FPA.

Help Me Connect

The Zurn Wilkins Model ZW205 valve features an Angle Style Body, which is a common configuration for automatic control valves where a change in flow direction is desired.

This valve is equipped with 3 inch ANSI Class 150 Flanged end connections, designed for secure and reliable installation into a piping system via bolted flanges.

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

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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.

The pilot assembly reacts to changes in upstream pressure, allowing the main valve to modulate between closed and open positions, thereby relieving excess pressure and sustaining upstream set pressure.

Application

  • Maintains a pre-determined upstream pressure by modulating flow.
  • Relieves excess pressure by opening the main valve when upstream pressure exceeds the set point.

Features

  • Blue Epoxy Coated, FDA Approved finish.
  • Pilot Assembly includes a "Wye" Type Strainer, Closing Speed Control, and Isolation Valves.
  • Standard inclusion of Inlet Pressure Gauge.
  • Equipped with ANSI Class 150 Flanges for connection.
  • Constructed with Copper Tubing and Brass Fittings.
  • Serves as either a pressure relief or pressure sustaining valve.
  • Standard relief range is 50 to 200 psi.
  • Features an Angle Style Body.
  • Designed for ease of maintenance and repair, contributing to a lower total cost of ownership.

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

Specifications

  • Valve Type: Pilot Operated Pressure Relief / Pressure Sustaining
  • Model: ZW205
  • Size: 3 inch
  • Body Style: Angle 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
  • End Connection: ANSI Class 150 Flanged
  • Pressure Rating (Flanged): ANSI Class 150, 250 psi max.
  • Minimum Inlet Pressure: 10 PSI
  • Temperature Rating: Water 33°F to 140°F
  • Pilot Spring Range: 50-200 psi

Certificates & Approvals

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

FAQs

What is the primary function of the Zurn ZW205 valve?

The Zurn ZW205 valve is designed to serve as both a pressure relief valve and a pressure sustaining valve. Its primary function is to maintain a predetermined upstream pressure by modulating to relieve any excess pressure in the system.

What are the main body and seat materials?

The main valve body and bonnet are constructed from Ductile Iron ASTM A536. The seat is made of Stainless Steel, and the disc is Buna-N Rubber, ensuring durability and corrosion resistance.

What type of end connections does this specific ZW205 model have?

This ZW205 model features 3-inch ANSI Class 150 Flanged end connections, providing a secure and versatile installation option for various piping systems.

Is this valve suitable for potable water applications?

Yes, the Zurn ZW205 valve meets the requirements of NSF/ANSI/CAN 61, indicating it is certified for use in applications where lead content is a concern and is suitable for potable water systems. It is also lead-free.

What is the recommended installation orientation for this valve?

For optimal performance and maintenance, the recommended installation orientation for this Automatic Control Valve (ACV) is horizontal, with the valve cover facing upwards. This is especially critical for 6-inch and larger valves to facilitate proper air bleeding and maintenance.

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