Vacu-Stop™ Vacuum Relief Valve - NA Market

Vacu-Stop™ vacuum relief valves automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater/tank equipment. VRVs are suitable for water and low pressure steam service and are ideal for use in water heaters and supply tanks, table top heaters, jacketed steam kettles, unit heaters, low pressure steam systems, and steam coil heaters. Complies with ANSI Z21.22 and CSA 4.4 Relief Valves for Hot Water Supply Systems.

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Vacuum relief valve. Threaded connections NPT male, connection sizes 1/2 and 3/4 inch. Dezincification resistance low-lead brass CW724R body (< 0.25% lead content) certified and listed by ICC-ES to NSF/ANSI/CAN 372, file PMG-1360. Complies with ANSI Z21.22/CSA 4.4. PPSU cartridge, check. Stainless steel spring. Silicom 240/T Washer. PA6G30 Top. ABS Cover plate. Water and low pressure steam. Maximum working pressure (water) 200 psig (14 bar). Maximum working pressure (steam)15 psig (1 bar). Working temperature range 32 to 250°F (0 to 120 °C). Vacuum relief opening pressure 0.3” Hg (1 kPa) vacuum. Relief capacity 4.5 CFM @ 2” Hg (130 lpm @ 7 kPa) vacuum.
PLEASE download from "DOWNLOAD" panel on this page, the Revit Content Instruction Guide, to aid in understanding what is in the Revit family and how to select various available options.

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