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Betts Industries · Hydraulics
EV46980ALT
In stock · ships from Knoxville
This is a 3-inch aluminum internal air-operated emergency valve, commonly used on cargo tank trailers (MC306/DOT406) for bottom loading and unloading of petroleum products.
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Verified fitment for 3 applications
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The inventory SKU likely corresponds to Betts EV46980ALTS, a complete valve‑and‑sump assembly. Fits 3-inch sump flanges. Requires 80‑100 psi air supply to operate. Not intended for chassis or engine applications.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
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It uses an internal air cylinder to open the poppet, allowing product flow, and has a shear section that automatically slams the valve shut if the downstream piping is torn away in an under‑ride accident. A fusible plug dumps air pressure if the valve exceeds 212°F, providing fire protection. The 'Tee' design refers to the grooved outlet, and the integrated sump mounting enables installation at the lowest point of the tank for complete draining. Typical replacement reasons include damage from a shear event, seat leakage, or air cylinder failure that prevents the valve from opening or sealing.
Part Number: EV46980ALT
3 AIR OP TEE SUMP
Unit: ea
Dealer: Post Onsite
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