The Hoffman Model #76 Main Steam Vent is a "Vacuum Valve" used on medium and large size one-pipe steam heating system. It's a float type thermostatic vent with a single non-adjustable port. 1/2/" female x 3/4" male dual thread.
One Model 350 Dryerbox® - 22 Ga. deep drawn recessed dryer vent box with gas port, measures 3 1/2 inches deep from nailing flange. For 2x4 construction but has a very oval shaped port on top to accommodate the squished 4" Snaplock pipe.
Master Flow Type B vent pipe cap. Cap is adjustable to fit OD pipe sizes 2 7/8" - 4 7/8" (3" - 5"). Cap is round 7" in diameter at the top and stands about 5" tall.
Cylinder Lubricator, with 1/16"NPT Mounting thread, complete with the inside vent pipe and a check valve in the base. Fully functional, top glass is 1" in diameter total height 2-3/4" , base has 5/8" diameter sight glass. Made By Debolt Machine Inc.
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