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Wilkins ZW205 Pilot Operated Water Pressure Relief Valve, Lead-Free*
Wilkins

Wilkins ZW205 Pilot Operated Water Pressure Relief Valve, Lead-Free*

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. The pilot assembly reacts to changes in upstream pressure allowing the main valve to modulate between the closed and open position, maintaining desired upstream set pressure. As long as the upstream pressure is below the set point of the pilot assembly, the main valve will stay in the closed position (sustaining); however, once the upstream pressure exceeds the set point of the pilot assembly, the main valve will open and relieve the excess pressure (relief). Meets the requirements of NSF/ANSI 61* *Product contains weighted average lead content less than 0.25% for wetted surfaces.
Specification
  • The Pressure Relief / Pressure Sustaining Valve shall be a single seated, line pressure operated, diaphragm actuated, pilot controlled globe or angle valve. The valve shall seal by means of a corrosion-resistant seat and resilient, rectangular seat disc. These and other parts shall be replaceable in the field; all such service and adjustments to be possible without removing the valve from the line. The stem of the basic valve shall be guided top and bottom by integral bushings. The basic valve and its pilot control system shall contain no packing glands or stuffing boxes. The diaphragm shall not be used as a seating surface nor shall pistons be used as an operating medium. All internal and external ferrous surfaces shall be coated with a high quality, fusion epoxy coating. The pilot control system shall include a direct-acting, normally closed, spring-loaded, diaphragm actuated pilot valve with the stem guided between the diaphragm assembly and seat disc. To ensure precise pressure regulation, the appropriately rated pilot valve shall be field adjustable within the pressure control range of the spring. The valve shall be certified to NSF/ANSI Standard 61. The Pressure Relief / Pressure Sustaining Valve shall be a ZURN WILKINS Model ZW205.
Technical specification
  • Unique ref.zurn-zw205
  • Product familyAdjusting/Controlling Valves for Liquid Services
  • Product groupWater Pressure Relief Valves
  • TypeObject (single object)
  • Date of publishing2025-09-02
  • Edition number1
Links
Related
  • Designed inUnited States
Classification
  • BIMobject CategoryPlumbing - Valves

Region availability

North America
Anguilla
Antigua and Barbuda
Aruba
Barbados
Belize
Bermuda
British Virgin Islands
Canada
Caribbean Netherlands
Cayman Islands
Collectivity of Saint Martin
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Greenland
Grenada
Guadeloupe
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Montserrat
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Saint-Barthélemy
Sint Maarten
The Bahamas
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States

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