Stainless Steel Check Valves

Inline Check Valves

Midland's pages for its 304 stainless in-line check valves (949430, 949431, 949432 and 949435) list FPT x FPT connections and a fluoroelastomer seal. The 316 stainless inline series runs eight sizes from 1/4 in. to 2 in., FNPT x FNPT, with a PTFE seat and 800 WOG across the series. Browse all sizes in the 316 inline series.

Barrel Spring Check Valves

Midland's pages for 949441 and 949445 list FPT x FPT connections, 300 psi WOG, PTFE seal, NBR seat. Confirm the size and rating for your service on each product page.

Y-Pattern Spring Check Valves

Y-pattern check valves seat the disc at an angle to the flow path. They are offered in stainless with female NPT threads (FPT x FPT). Confirm the size and rating on the product.

Swing Check Valves

Swing check valves use a hinged disc that opens with forward flow and closes against reverse flow. Midland's pages for 949353 and 949354 list a CF8M 316 stainless body and disc, a PTFE seal, FPT x FPT connections and 200 psi.

Single and Dual Check Valves

Midland lists its 304 stainless single and dual check valves with FPT x MPT connections (34838, 34846) or male flare connections (34844, 34845). A replacement check ball and flare inlet for these valves are listed alongside them.

Choosing a Stainless Check Valve

Grade (304 or 316) and style are the visible differences between these valves; each product page states its grade and connection. For chemical compatibility, send us the media and operating conditions and we will confirm with the manufacturer before you order: request selection help. For other materials, see our brass check valves and PVC check valves.