Delivery from USA, it takes about 3-5 days to arrive at.
Product description
Condition: New
Material: stainless steel 304
This adapter is for venting or breaking chamber vacuum in a more controllable manner and prevent air burst.
KF25 flange Stainless Steel 304 slow vent valve or vacuum relief valve
Valve head made of 1 piece of stainless steel ensure highest durability
FKM Viton O-ring for higher working temperature environment
Video
Can You Use Air Admittance Plumbing Vent Valves on Your Next Construction Project?
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$29.99