DFT Inc. manufacturers a wide variety of stainless steel check valves including threaded in-line, wafer style, flanged and threaded stainless steel check valves in a broad selection of sizes and pressure ratings.

Keckley Co. is a manufacturer of a variety of industrial components including a full line of stainless steel body check valves. Wafer double disc check valves are machined to exacting specifications. Keckley Co. also offers stainless steel silent globe style check valves.

Colton manufactures stainless steel twin door and silent check valves. Colton's line of silent check valves includes cast stainless steel threaded/socket, wafer body and flanged body configurations in a wide selection of sizes.

Parker Hannifin manufactures a full line of stainless steel check valves like the CO Series, available in three sizes, with port sizes from 1/4 inch up to 1/2 inch. Flow capacities (Cv) range from 0.59 to 2.65. There are four other series' of stainless steel check valves available as well.

Check All Valve is a manufacturer of  a variety of stainless steel sanitary insert check valves for use in new or existing sanitary systems.  These stainless steel check valves are designed to fit into end clamp type fittings that are grooved, eliminating the need for the gasket normally found there.

Valve Check Inc.'s  U600 stainless steel check valves feature a Teflon seal making them ideal for steam applications as well as other highly corrosive situations. The u600 stainless steel check valves are available in sizes from 1/4" up to 2".

Flexi-Hinge offers manufactures stainless still check valves that operate without a spring and will open with 0.10 PSI of pressure and seal with 1/2 PSI of back pressure. Models like the Series 503 flanged check valve feature a maximum operating pressure of 200 PSI and operating temperature range of –100° to +500°.

Innovative Pressure Technologies manufactures coned and threaded valves, fittings and tubing products including stainless steel check valves available in ball seat poppet and soft seat poppet models with max working pressure up to 60,000 PSI for applications in gas, liquid, fluid handling for the chemical, petrochemical, research and oil and gas industries.

Jaeco manufactures ball check valves including a wide array of stainless steel models featuring compact designs, spring-loaded to 2 or 10 PSI, full range of sizes from 1/4" to 1" and usable as injection line valves. These valves have a temperature range of -15° to +650°F and are also offered in custom configurations.

Kepner Products Co. manufactures a variety of check valves, relief valves and shuttle valves including stainless steel inline, cartridge, ball check and split flange check valves in a wide assortment of sizes.

East Coast is a stainless steel component manufacturer that offers a variety of valves, pipe, tubing and various other stainless steel products. East Cost offers cast and forged stainless steel check valves in a variety of sizes.

Circle Valve Technologies, Inc. is a distributor of valve products from a variety of manufacturers. Available products include stainless steel check valves such as the 2300 series for high pressure service featuring single piece design, quiet closing and zero leakage design as well as automatic wear compensation and resilient o-ring.

Commercial Industrial Supply offers stainless steel check valves that can handle a wide range of temperatures and conditions. These are swing check valves in a size range of 1/2" to 2".