DFT manufactures in-line check valves in four different styles; threaded, wafer, flanged and sanitary. The Basic threaded valve is an all-purpose, spring-assisted, in-line configuration. The Restrictor threaded check valve is used for applications that require higher cracking pressures to open it. The ALC Wafer type is an in-line, spring assisted, single guided "wafer" design to prevent "water hammer" and "reverse" flow.

GA Industries manufactures engineered check valves that can be used in rigorous applications. They offer benefits such as non-slam operation, surge reduction, low headloss and operational adjustability. Their cushioned swing check valve is a counter-weighted to close before flow reversal, without slam, bang, hammer and shock. Their tilting disc type uses an offset pivot disc design that counter-acts the disc's tendency to be slammed shut by reversing water.

Snap-Tite produces check valves with various spring pressures and seal options. The CPIFF series are one piece, inline design in a size range from 1/4 to 1 inches with working pressures up to 5,000 psi, plated steel or brass construction and flow rates up to 30 gpm. The 6C & 3C series are two piece, inline check valves in a size range from 1/4 to 1 inches for 6C series and from 1/4 to 2 inches for 3C series.

Crispin supplies check valves that meet ANSI/AWWA C512 standards and are ANSI/AWWA C508 compliant. Products include FV series foot, GC series globe, RF series rubber flapper, SWC series swing, TD series tilting disc, SC series surge, and the WC series wafer check valves.

Innovative Pressure Technologies produces standard, pipe and low pressure check valves suited for a psi range from 20,000 to 60,000 and available in ball seat poppet and soft seat poppet styles. Pipe check valves are suited for a psi range from 10,000 to 15,000 and available in ball seat poppet, soft seat poppet, and dual seal ball styles.

Jaeco makes ball check valves that feature 316 stainless steel construction, available in spring loaded 2 or 10 psi, usable on metering pumps, temperatures from -15 to 650F, pressures up to 2,500PSI, and also custom configurations.

Simtech is a provider thermoplastic check valves. Their true union ball check valves are round machined with a tumbled ball. Internal splines minimize pressure drops. Simtech's wafer types are chemical resistant and compact for ease of installation. Their horizontal swing designs are designed for wastewater treatment, agricultural irrigation and chemical plant applications.

Schutte & Koerting is a manufacturer of a wide array of industrial components, including a full line of check valves. Products are designed to prevent backflow in steam and water lines. Used in extraction lines from steam turbines to feedwater heaters, and heating systems or process equipment.

Circle is a distributor of products from a variety of manufacturers, including check valves with operating pressures up to 10000 psig.

Ives Equipment, Inc. is a provider of process control equipment and services. Available products include standard check valves in addition to other configurations.