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

Item Number: 3-ZW205FPY
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$8,668.48
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Product Type: Pressure Relief / Pressure Sustaining Valve
  • Valve Size: 3 inch
  • End Connection: Class 300 Flanged
  • Maximum Operating Pressure: 300 PSI
  • Main Valve Body Material: Ductile Iron ASTM A536
  • Pilot Spring Range: 50-200 PSI
  • Temperature Rating: 33°F to 140°F (Water)
  • Certifications: ANSI/AWWA C530, NSF/ANSI/CAN 61, Lead Free

Description

The Zurn Wilkins Model ZW205 is a 3-inch, Class 300 flanged pilot-operated pressure relief and sustaining valve designed to maintain a consistent upstream pressure in critical applications. It functions as both a relief valve for excess pressure and a sustaining valve to prevent upstream pressure drops. Constructed with a ductile iron body and stainless steel internal components, it ensures durability. Standard features include a pilot assembly with a wye strainer, closing speed control, isolation valves, and an inlet pressure gauge. The valve is epoxy coated, FDA approved, and certified lead-free to NSF/ANSI/CAN 61 standards, making it suitable for various water systems. Item number 3-ZW205FPY.

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Connections

  • This Zurn Wilkins ZW205 valve features Class 300 Flanged end connections.
  • Ensure compatibility with corresponding Class 300 Flanged piping systems for secure installation.
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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 3-inch, Class 300 flanged valve effectively modulates between closed and open positions to relieve excess pressure or sustain upstream pressure.

Construction & Materials

  • Main Valve Body and Bonnet: Ductile Iron ASTM A536
  • Disc Guide, Seat, Stem, and Spring: Stainless Steel
  • Disc: Buna-N Rubber for reliable sealing
  • Diaphragm: Nylon Reinforced Buna-N for durability
  • All internal and external ferrous surfaces are coated with a high-quality, fusion epoxy coating that is FDA Approved.

Standard Features

  • Includes a factory-installed Pilot Assembly with "Wye" Type Strainer, Closing Speed Control (for sizes 1 1/4" - 4"), and Isolation Valves.
  • An Inlet Pressure Gauge and Copper Tubing and Brass Fittings are standard.
  • Designed for ease of maintenance and repair, contributing to a lower total cost of ownership.

Caution: 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, 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.

Specifications

  • Product Type: Pressure Relief / Pressure Sustaining Valve
  • Brand: Zurn Wilkins
  • Model: ZW205
  • Valve Size: 3 inch
  • End Connection: Class 300 Flanged
  • Body Style: Globe
  • Maximum Operating Pressure: 300 PSI
  • Minimum Inlet Pressure: 10 PSI
  • Pilot Spring Range: 50-200 PSI
  • Temperature Rating: 33°F to 140°F (Water)
  • 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

Dimensions (3 inch, Class 300 Flanged, Full Port Globe)

  • Overall Length (A): 13 1/4 inches
  • Diameter (B): 9 3/16 inches
  • Max Width (C): 8 inches
  • Flange Thickness (D): 3 3/4 inches
  • Distance Between Flange Faces (H): 6 inches
  • Approximate Weight: 70 lbs

Certificates & Approvals

  • ANSI/AWWA C530
  • NSF/ANSI/CAN 61 (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 designed to act as both a pressure relief valve and a pressure sustaining valve. It maintains a pre-determined upstream pressure by relieving excess pressure or preventing it from dropping too low.

What are the main body and bonnet materials for this valve?

The main valve body and bonnet are constructed from Ductile Iron ASTM A536, ensuring robust performance and durability for critical applications.

What is the standard pilot spring pressure range for the ZW205?

The standard pilot spring range for the ZW205 valve is 50 to 200 PSI, allowing for versatile application in various pressure systems and precise control.

What certifications does this valve hold?

The ZW205 is certified to ANSI/AWWA C530 and NSF/ANSI/CAN 61 standards, confirming it meets lead-free requirements for potable water applications and safe operation.

What type of end connections does this specific 3-inch ZW205 model use?

This specific 3-inch ZW205 model is equipped with Class 300 Flanged end connections, suitable for installation in compatible flanged piping systems requiring a higher pressure rating.

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