| Air and vacuum sewer valves permit a large volume of air to be released
from a pipeline when filling as well as allowing air into a system when draining. CRISPIN air and vacuum sewer valves incorporate the integrity of a rigid stainless steel valve plug to seal off the outlet orrifice. Subsequently, damage to the seating surface is much less likely to occur in surge conditions. A drawing of a typical sewer air and vacuum valve seating area is shown, the valve plug is protected froma rush of air by a stainless steel baffle. The baffle provides a rigid support for the float guide bushing while allowing the float rod enough clearance for self seating operaiton. |
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