Durst Catalog 2013

HOFFMAN VALVES & VENTS

MAIN VENT HOFFMAN SERIES 79 ¾" MIP x ½" FIP • Designed for both hot and cold water. Safety drain connection for discharging moisture. Built-in Check valve. Operating pressure 75 psi. A931

MAIN VENT HOFFMAN SERIES 4 (FOR STEAM HEATING SYSTEMS) Main Vent ¼" size. Has no float. Will not close against water. Vents air quickly. Operating pressure 25 lbs. A932

Individually Boxed

Individually Boxed

MAIN STEAM VENT HOFFMAN SERIES 4A (FOR HEATING SYSTEMS)

AIR VALVE HOFFMAN SERIES 70A Float-type vent with single non-adjustable port. Operating pressure 11 psi. A932B

Main Vent ¾" size. Equipped with float which closes against water. Capacity up to 1000 sq. ft. of radiation. A933

Individually Boxed

6 per Box

FLOAT VENT HOFFMAN (FOR MAINS) ¾" Male x ½" Female • Float-type vent. Use for mains of medium and large systems. Stock Pressure Series A934 3 PSI 75 A934B 3 PSI 76 A934C 10 PSI 75H

STEAM UNIT HEATER AIR VALVE HOFFMAN SERIES 74

½" Female x ¾" Straight Shank • Designed for pressure that constantly rises and drops. Float-type vent with single non-adjustable port keeps pressure at a steady level. Up to 25 lbs. pressure. A934A

Individually Boxed

Individually Boxed

65

p: 800-451-0234 • f: 800-432-3983 • durstcorp.com • V-1