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

Item Number: 6-ZW205FPY
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$14,585.72
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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
  • Main Valve Body: Ductile Iron ASTM A536
  • Connection Type: Class 300 Flanged
  • Nominal Valve Size: 6 inch
  • Standard Pilot Spring Range: 50-200 psi
  • Blue Epoxy Coated, FDA Approved finish
  • Includes Wye Type Strainer, Isolation Valves, Inlet Pressure Gauge
  • Lead Free, NSF/ANSI/CAN 61 certified

Description

The Zurn Wilkins Model ZW205 is a 6-inch Class 300 flanged, pilot-operated pressure relief and pressure sustaining valve. Designed for applications requiring precise upstream pressure maintenance, it either relieves excess pressure or sustains a minimum upstream set pressure. Constructed with a durable ductile iron body and blue epoxy coating, it features stainless steel internal components for reliable operation. This lead-free valve includes a wye strainer, isolation valves, and an inlet pressure gauge as standard, simplifying setup and maintenance. It meets NSF/ANSI/CAN 61 and ANSI/AWWA C530 standards for quality.

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Connections

  • This Zurn Wilkins ZW205 valve is equipped with 6-inch Class 300 flanged connections for installation into corresponding flanged piping systems.
  • The valve is designed for installation in a horizontal orientation with the valve cover up. This recommended position facilitates proper air bleeding from the cover and simplifies any future maintenance procedures, especially for valves of this size.
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Additional Details

The Zurn Wilkins Model ZW205 is a pilot-operated pressure relief/pressure sustaining valve designed for applications where maintaining a predetermined upstream pressure is critical. The pilot assembly reacts to changes in upstream pressure, allowing the main valve to modulate between closed and open positions, either relieving excess pressure or sustaining a desired upstream set pressure.

Key Features

  • Serves as either a pressure relief or pressure sustaining valve.
  • Maintains precise upstream pressure by modulating flow.
  • Includes standard features like a pressure gauge, wye strainer, and isolation valves for simplified startup and maintenance.
  • Equipped with a blue epoxy coated, FDA approved finish.
  • Adjustable flow control valve provides quick opening for pressure relief and slow closing for surge protection.

Construction Materials

  • Main Valve Body and Bonnet: Ductile Iron ASTM A536
  • Disc Guide, Seat, Stem, and Spring: Stainless Steel
  • Disc: Buna-N Rubber
  • Diaphragm: Nylon Reinforced Buna-N

The recommended installation orientation for Automatic Control Valves is horizontal, with the valve cover up. 6 inch and larger valves should only be installed horizontally to ensure proper air bleeding and maintenance.

Specifications

  • Valve Type: Pilot Operated Pressure Relief / Pressure Sustaining Valve
  • End Connection Type: Flanged
  • Flange Class: ANSI Class 300
  • Nominal Valve Size: 6 inch
  • 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
  • Pilot Spring Range (Standard): 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)
  • Lead Free

FAQs

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

The ZW205 valve functions as both a pressure relief valve and a pressure sustaining valve. It is designed to maintain a predetermined upstream pressure by either relieving excess pressure or sustaining a minimum upstream set pressure in critical applications.

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

This specific ZW205 model, with SKU 6-ZW205FPY, features 6-inch Class 300 flanged end connections. The ZW205 series also offers other options such as Class 150 flanged, grooved, and threaded connections.

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

The main valve body and bonnet are constructed from durable Ductile Iron ASTM A536. The disc guide, seat, stem, and spring are stainless steel, while the disc is Buna-N rubber and the diaphragm is made of nylon reinforced Buna-N.

What is the recommended installation orientation for the ZW205 valve?

The recommended installation orientation for Zurn automatic control valves, including the ZW205, is horizontal with the valve cover up. This is particularly important for 6-inch and larger valves to ensure proper air bleeding and simplify future maintenance.

What certifications does the ZW205 valve hold for safety and quality?

The ZW205 valve is certified to ANSI/AWWA C530 standards. It also meets the requirements of NSF/ANSI/CAN 61, ensuring it is lead-free with a maximum weighted average lead content of 0.25% for potable water applications.

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