DFT Inc manufactures a wide array of check valves, including in-line check valves. In-line check valves from DFT include threaded, wafer, flanged and sanitary models. These valves are used widely in chemical processing applications.

Parker Hannifin offers a full line of in-line check valves that are designed for use in semiconductor, ultra-pure water and aggressive chemical or gas applications. These in-line check valves utilize machined PTFE components to provide superior chemical resistance and purity without requiring o-rings for sealing.

Kepner Products manufactures zero leakage control valves for a variety of liquid and gas applications. Kepner's Kep-O-Seal line of inline check and relief valves including relief check valves, high pressure (6000 PSI) inline check valves and fixed orifice flow restrictor valves.

ENERPAC is a manufacturer of a variety of inline check valves. These check valves include inline dual flow control, pressure reducing, pilot operated, directional dn mounting patter valves. ENERPAC's inline check valves have an operating pressure range of 0 - 5000 PSI.

General AI Products offers in-line cast brass check valves designed for air compressor discharge lines. Cast brass bodies, stainless springs, and glass-filled fluoropolymer poppets are all corrosion resistant. These valves come in sizes from 1/8" up to 2".

Valcor manufactures in-line check valves including the V520-11 series models. This series of small, coaxial, one-way, normally closed check valves are designed for nuclear power plant applications. These check valves are available in stainless steel body as a standard and are also available in brass as an option in sizes ranging from 1/4" to 2".

Boiler Supplies offers a wide array of check valve products fro applications in the mining, oil and gas, petrochemical, pharmaceutical, steel, water purification, pulp and paper, power generation and textile industries. This selection includes dozens of Durabla in-line check valve models in sizes up to 10" with a broad array of pressure ratings and material types.

EXACT Dispensing Systems offers the 400 Series autovalve, available in both standard shut off or snuffback models. This in-line check valve is used at the inlet ports of systems to provide backflow protection as well as free movement. These valves are widely used for applications in adhesives, epoxies, urethanes, and silicones.

Generant Valve & Fittings manufactures the ICV series in-line check valves. These valves are offered in sizes ranging from 1/8" up to 3/4" and are widely used in pressure and vacuum application. A bubble tight seal is made possible by a line of contact between a machined seat and an elastomer O-ring with minimum differential pressure. A fluted retainer design and floating poppet provides laminar flow.

Orr & Orr distributes a variety of hardware and specialty products for industrial applications including Shurflo nylon in-line check valves. These valves can be easily installed in any system to safeguard against back surge and have a maximum operating pressure of 100 PSI and temperature range of 34 - 120 °F.

Circle Valve Technologies, Inc. is a distributor of valve products from a variety of manufacturers. Available products include 2200 series inline check valves featuring medium flow rates, single piece design, resilient o-ring, brass or stainless steel construction and sizes ranging from 1/8" to 1".