Auto-Vent #72 ITEM No: MOM#72 The No. 72 Auto-Vents is a fast venting valve of the expansion type. All expansion and contraction of the single non-porous, composition disk is confined to four vents. ports. |
Auto-Vent #72 ITEM No: MOM#72 The No. 72 Auto-Vents is a fast venting valve of the expansion type. All expansion and contraction of the single non-porous, composition disk is confined to four vents. ports. |