2 ZW205 FIRE PUMP RELIEF VALVE, CLASS 300, FLG X FLG

Item Number: 2-ZW205FPY
1 1
$6,881.09
Special Order
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: 2 inch
  • End Connections: Class 300 Flanged
  • Body Material: Ductile Iron ASTM A536
  • Lead Free construction
  • Blue Epoxy Coated, FDA Approved
  • Standard Pilot Spring Range: 50-200 psi
  • Includes Wye Type Strainer, Pressure Gauge, Isolation Valves
  • Complies with ANSI/AWWA C530
  • NSF/ANSI/CAN 61 certified

Description

The Zurn Wilkins Model ZW205 is a 2-inch pilot-operated pressure relief and pressure sustaining valve. It is engineered to maintain a pre-determined upstream pressure by either relieving excess pressure or sustaining the set pressure, making it ideal for critical water control applications. Constructed with a durable ductile iron body and blue epoxy coating, this lead-free valve meets NSF/ANSI/CAN 61 and ANSI/AWWA C530 standards. Standard features like a wye strainer, pressure gauge, and isolation valves simplify installation and maintenance. The valve utilizes Class 300 flanged end connections for robust system integration, ensuring reliable performance in demanding environments.

Help Me Connect

Connections and Installation

This 2-inch Zurn Wilkins ZW205 valve features Class 300 flanged connections on both ends, designed for secure integration into your pipeline system. While compatible with various setups, the recommended installation orientation is horizontal with the valve cover facing upwards. This orientation is crucial for ease of air bleeding and facilitates maintenance tasks.

View full details

Additional Details

This Zurn Wilkins Model ZW205 is a pilot-operated pressure relief and pressure sustaining valve designed for applications requiring a pre-determined upstream pressure to be maintained. It modulates to either relieve excess upstream pressure or sustain the set upstream pressure.

Application

  • Designed for applications where it is critical to maintain a pre-determined upstream pressure.
  • The main valve modulates between closed and open positions to maintain the desired upstream set pressure.
  • Valve stays closed (sustaining) if upstream pressure is below the pilot assembly's set point.
  • Valve opens to relieve excess pressure if upstream pressure exceeds the pilot assembly's set point.

Standard Features

  • Blue Epoxy Coated, FDA Approved finish.
  • Includes a complete 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 as standard (note: this product is Class 300, reflecting an option selection).
  • Constructed with 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

Installation Guidance

  • 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. For this 2-inch valve, horizontal installation is generally recommended.

Specifications

  • Type: Pilot Operated Pressure Relief / Pressure Sustaining Valve
  • Body Style: Globe
  • Nominal Size: 2 inch
  • End Connection: Class 300 Flanged
  • Temperature Rating: Water 33°F to 140°F
  • Pilot Spring Range (Standard): 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
  • Coating: Blue Epoxy Coated, FDA Approved

Certificates & Approvals

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

FAQs

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

The ZW205 valve is a pilot-operated pressure relief and pressure sustaining valve. It is designed to maintain a pre-determined upstream pressure by either opening to relieve excess pressure or modulating to sustain the set pressure.

What are the standard end connections for this 2-inch ZW205 model?

This specific 2-inch ZW205 model comes with Class 300 flanged end connections on both sides, ensuring a robust and secure connection in compatible piping systems.

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

The main valve body and bonnet are constructed from Ductile Iron ASTM A536. Internal components such as the disc guide, seat, stem, and spring are stainless steel, with a Buna-N rubber disc and a nylon reinforced Buna-N diaphragm.

What is the standard pilot spring pressure 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.

Is this valve certified for potable water applications?

Yes, the ZW205 valve meets the requirements of NSF/ANSI/CAN 61, indicating it is compliant for use in potable water applications with a maximum weighted average lead content of 0.25%. It is also certified lead-free.