Hydronic Valves & Controls

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Cash Acme 3/4 in. Vacuum Relief Valve
Cash Acme 3/4 in. Vacuum Relief Valve
Item # 151838

The VR-801 Vacuum Relief Valve is designed to protect hot water supply systems and pressure vessels against negative pressure. Installed on the cold water supply line, the Cash Acme VR-801 closes tightly under pressure and opens at a 1 in. mercury vacuum. Atmosphere admitted to the system breaks the vacuum, preventing collapse of the storage tank.

  • Brass body
  • Silicone seat disc
  • Prevents internal vacuum conditions
  • Guards against siphonage
  • Opens quickly in emergency situations
  • Every valve is tested for performance prior to shipping
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