6 ZW205 RELIEF/SUSTA FIRE VLV ANG BODY ANSI 300 FLG SS SEAT CPR TUBNG BRZ FTNGS

Item Number: 6-ZW205FPAY
1 1
$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
  • Valve Type: Pressure Relief / Pressure Sustaining
  • Nominal Size: 6 inch
  • Body Style: Angle Body
  • End Connection: ANSI Class 300 Flanged
  • Maximum Pressure Rating: 400 psi
  • Pilot Spring Range: 50-200 psi
  • Body Material: Ductile Iron ASTM A536
  • Seat Material: Stainless Steel
  • Lead Free Compliant
  • Blue Epoxy Coated (FDA Approved)

Description

The Zurn Wilkins 6 inch ZW205 is a robust pressure relief and pressure sustaining valve, designed for critical applications requiring stable upstream pressure. It features an angle style body with ANSI Class 300 flanged connections, offering precise control in fire safety and industrial systems. Constructed from durable ductile iron with a stainless steel seat and blue epoxy coating, this valve ensures longevity and corrosion resistance. It is lead-free and NSF/ANSI/CAN 61 compliant, making it a reliable choice for maintaining system integrity by either relieving excess pressure or sustaining a minimum upstream pressure. Item number 6-ZW205FPAY.

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Connection Type

  • This Zurn Wilkins ZW205 valve features 6 inch ANSI Class 300 flanged end connections. This means it connects to mating 6 inch flanges that comply with ANSI Class 300 pressure ratings.
  • The valve has an angle style body, which means the inlet and outlet ports are oriented at a 90-degree angle to each other, often used for space-saving installations or to change flow direction.

Installation Tip

For optimal performance and ease of maintenance, especially for 6 inch and larger valves, it is recommended to install this valve horizontally with the valve cover positioned upwards. This orientation aids in the proper bleeding of air from the cover.

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Additional Details

The Zurn Wilkins Model ZW205 is a pilot-operated pressure relief and pressure sustaining valve designed for critical applications requiring consistent upstream pressure control. It precisely modulates between closed and open positions to maintain a pre-determined upstream set pressure or relieve excess pressure when the upstream pressure exceeds this set point.

This specific model features a 6 inch angle style body with ANSI Class 300 flanged connections, making it suitable for a wide range of industrial and fire safety applications. It includes standard features like blue epoxy coating, a pilot assembly with a "Wye" type strainer, closing speed control, and isolation valves to simplify installation and maintenance.

Operation

  • Senses upstream pressure to modulate flow, maintaining set pressure.
  • Pilot assembly reacts to upstream pressure changes, allowing the main valve to open and relieve excess pressure.
  • Adjustable flow control provides quick opening for relief and slow closing for surge protection.

Key Features

  • Designed for both pressure relief and pressure sustaining functions.
  • Blue epoxy coated (FDA approved) for corrosion resistance.
  • Includes wye type strainer, isolation valves, and inlet pressure gauge as standard.
  • Internal components include a stainless steel seat, Buna-N rubber disc, and nylon reinforced Buna-N diaphragm for durability.
  • Lead Free compliant, meeting NSF/ANSI/CAN 61 standards.

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

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

Specifications

  • Valve Type: Pressure Relief / Pressure Sustaining Valve
  • Body Style: Angle Style Body
  • Nominal Size: 6 inch
  • End Connection: ANSI Class 300 Flanged
  • Maximum Pressure Rating: 400 psi
  • Pilot Spring Range: 50-200 psi
  • Minimum Inlet Pressure: 10 psi
  • Temperature Rating: Water 33°F to 140°F
  • Overall Height (A): 21 inches
  • Length (J): 6 1/4 inches
  • Flange Diameter (B): 15 3/4 inches
  • Maximum Width (C): 12 5/16 inches
  • Face-to-Face (D): 6 1/4 inches
  • Approximate Weight: 240 lbs

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
  • Pilotry Tubing: Copper
  • Pilotry Fittings: Brass

Certificates & Approvals

  • ANSI/AWWA C530
  • NSF/ANSI/CAN 61 (0.25% Max. Weighted Average Lead Content)
  • Lead Free
  • FDA Approved Coating

FAQs

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

The Zurn Wilkins ZW205 is a pilot-operated valve designed for both pressure relief and pressure sustaining applications. It can either maintain a pre-determined upstream pressure or relieve excess pressure when it exceeds a set point.

What types of connections does this ZW205 model support?

This specific 6 inch ZW205 model features an angle style body with ANSI Class 300 flanged connections, suitable for secure and durable integration into compatible piping systems.

What materials are used in the construction of the ZW205 valve?

The main valve body and bonnet are constructed from durable Ductile Iron ASTM A536. Key internal components like the disc guide, seat, stem, and spring are made from Stainless Steel, while the disc is Buna-N Rubber and the diaphragm is Nylon Reinforced Buna-N.

Is the Zurn Wilkins ZW205 compliant with lead-free standards?

Yes, the Zurn Wilkins ZW205 valve is Lead Free compliant and meets the requirements of NSF/ANSI/CAN 61, ensuring it contains a maximum weighted average lead content of 0.25%.

What is the recommended installation orientation for the ZW205 valve?

For 6 inch and larger valves, the recommended installation orientation is horizontal with the valve cover facing upwards. This ensures proper air bleeding from the cover and facilitates easier maintenance.

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