Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Knappco Civacon · Hydraulics
VA8182
In stock · ships from Knoxville
The Knappco Civacon VA8182 is a MaxAir II air-operated internal emergency valve used on petroleum cargo tank trailers.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 3 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
This is a tank trailer component, not a general heavy-duty truck part. It mounts to a 4" TTMA sump on the bottom of a petroleum tank. Verify exact inlet flange and outlet configuration (flanged straight) before purchasing.
Part data verified against 4 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It features a 5-inch inlet by 4-inch outlet, straight-through flow path, and flanged connections with an internal air operator and external exhaust. This valve stops product flow if the trailer is damaged, incorporating a frangible shear groove and a heat-sensitive fusible plug for fire protection. It is compatible with diesel, gasoline, biodiesel, ethanol, methanol, and crude oil, and includes a mechanical jack screw for manual operation if air pressure is lost.
Part Number: VA8182
4 STR MAXAIR ALUM, FLANGED
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
