4 ZW205 RELIEF/SUSTA FIRE VLV ANG BODY IPS GRVD SS SEAT CPR TUBNG BRZ FTNGS

Item Number: 4-ZW205FPAG
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$11,309.44
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Estimated transit time: 2 to 5 Business Days

Brand - Wilkins
  • Valve Type: Pressure Relief / Pressure Sustaining
  • Valve Size: 4 inch
  • Body Style: Angle
  • End Connections: IPS Grooved
  • Main Valve Body Material: Ductile Iron ASTM A536
  • Seat Material: Stainless Steel
  • Pilot Spring Range: 50-200 psi
  • Lead Free: NSF/ANSI/CAN 61 Compliant

Description

The Zurn Wilkins Model ZW205 is a 4-inch pilot-operated pressure relief and pressure sustaining valve with an angle style body and IPS grooved connections. It is engineered to maintain a pre-determined upstream pressure by either relieving excess pressure when needed or sustaining pressure at a set point. Constructed with a ductile iron body and stainless steel seat, it ensures durability. Standard features include a blue epoxy coating, a pilot assembly with a wye strainer, closing speed control, isolation valves, and an inlet pressure gauge. This valve is NSF/ANSI/CAN 61 Lead Free compliant, suitable for various water control applications from 33°F to 140°F. Item number 4-ZW205FPAG.

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Connections and Installation

  • The IPS grooved connections on this 4-inch angle body valve allow for straightforward installation into compatible grooved piping systems.
  • It is recommended to install this automatic control valve horizontally with the valve cover up to ensure proper air bleeding and maintenance access.
  • Suitable for applications where the valve needs to manage upstream pressure by either relieving excess pressure or sustaining a desired minimum pressure.
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Additional Details

The Zurn Wilkins Model ZW205 is a pilot-operated pressure relief and pressure sustaining valve designed to maintain a pre-determined upstream pressure in critical applications.

This 4 inch valve features an angle style body and IPS grooved connections, making it suitable for systems requiring excess pressure relief or stable upstream pressure control.

Operation & Function

  • Maintains a desired upstream set pressure by modulating between closed and open positions.
  • Opens to relieve excess pressure when upstream pressure exceeds the pilot assembly's set point.
  • Stays closed to sustain pressure when upstream pressure is below the set point.

Standard Features

  • Blue Epoxy Coated, FDA Approved ferrous surfaces for corrosion resistance.
  • Includes a Pilot Assembly with a "Wye" Type Strainer, Closing Speed Control (for sizes 1 1/4" - 4"), and Isolation Valves.
  • Integrated Inlet Pressure Gauge.
  • Equipped with Copper Tubing and Brass Fittings for the pilot system.

Specifications

  • Model: ZW205
  • Valve Size: 4 inch
  • Body Type: Angle Style Body
  • End Connection: IPS Grooved
  • Minimum Inlet Pressure: 10 PSI
  • Standard Relief/Sustaining Pilot Spring Range: 50-200 psi
  • Temperature Rating: Water 33°F to 140°F

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
  • Ferrous Surface Coating: Blue Epoxy Coated, FDA Approved
  • Pilot System Tubing: Copper
  • Pilot System Fittings: Brass

Certificates & Approvals

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

FAQs

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

The ZW205 is designed to operate as both a pressure relief valve and a pressure sustaining valve. It maintains a predetermined upstream pressure by relieving excess pressure or sustaining a minimum set pressure.

What are the key materials used in the construction of this valve?

The main valve body and bonnet are constructed from Ductile Iron ASTM A536. It features a Stainless Steel seat and disc guide, with a Buna-N Rubber disc and Nylon Reinforced Buna-N diaphragm.

What type of connections does this specific 4-inch ZW205 valve have?

This particular 4-inch ZW205 valve features IPS grooved connections for ease of installation into compatible piping systems.

Is the ZW205 valve compliant with lead-free standards?

Yes, the Zurn Wilkins Model ZW205 meets the requirements of NSF/ANSI/CAN 61, certifying it as lead-free with 0.25% maximum weighted average lead content.

What is the standard operating pressure range for the pilot spring on this valve?

The standard pilot spring range for the ZW205 pressure relief/sustaining valve is 50-200 psi, allowing for adjustable pressure control within this range.

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