霍夫曼专业水排气阀 - Hoffman Specialty Water Vent Valves

Model 550 – Part No. 401476 – Air Chamber

For use on convectors which are not provided with built-in air chambers or air collection fittings • Brass construction.
1⁄4″ NPT straight shank connection tapped at the top for 1⁄8″ NPT connection
6 cubic inch (98.3cm) volume
Maximum water pressure 100 psig (6.9 bar) • Maximum steam pressure 25 psig (1.7 bar)

Model 508 – Part No. 401475 Water Vent Valve

For automatic or manual venting systems
Ideal for use with Model 550 Air Chamber
Disc-type vent
Built-in check valve
Cartridge with discs can be replaced without draining the system
1⁄8″ NPT straight shank
Maximum water pressure 50 psig (3.5 bar) • Maximum pressure 50 psig (3.5 bar)

Model 790 – Part No. 401479 Water Vent Valve

For removing air from convectors, baseboard and wall radiation
Safety drain connection for discharging moisture
Fitting and ferrule for 3⁄16″ (4.8mm) OD tubing
Telescopic siphon tube
1⁄8″ NPT straight shank
Maximum operating pressure 30 psig (2.1 bar)*
Maximum pressure 30 psig (2.1 bar)

Model 791 – Part No. 401482 Water Vent Valve

For convectors and small mains
Safety drain connection for discharging moisture
Fitting and ferrule for 3⁄16″ (4.8mm) OD tubing
Telescopic siphon tube
1⁄4″ NPT straight shank
Maximum operating pressure 50 psig (3.5 bar)*
Maximum pressure 50 psig (3.5 bar)

Model 792 – Part No. 401494 High Pressure Water Vent Valve

For releasing air from hot or cold water or glycol mains,hydronic heating and chilling systems, storage and processing tank filters, centrifugal pumps with specific gravity greater than 0.7
Cast iron body and cover, stainless steel interior
Maximum operating pressure 250 psig (17.3 bar)*
Maximum hydrostatic pressure 350 psig (24.2 bar)
Maximum temperature 300°F (149°C)

Installation/Operation Manuals

HS 112D Model 792 High Pressure Water Vent Valve

Parts Lists

HS 800C Hoffman Specialty Service Parts Catalog

Catalog Pages

HS 900E Hoffman Specialty General Catalog

Submittals

HS 103C Hoffman Specialty Model 792 High Pressure Water Main Vent Valve

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霍夫曼专业水排气阀Hoffman Specialty Water Vent Valves

霍夫曼专业水排气阀
Hoffman Specialty Water Vent Valves