Home > Products Categories > Valve > Check Valve
Check Valve
FITOK offers a comprehensive range of check valves for diverse applications, including general industry, medium and high-pressure systems, semiconductor high-purity processes, and alternative energy. Working pressure from 145 psig (10 bar) to 60,000 psig (4137 bar) and temperature range from -110°F to 1200°F (-79°C to 649°C). End connection options include ferrule, threaded, weld, face seal, vacuum flange, and more, along with a variety of cracking pressures to meet specific application needs.
Browse by Category
CV, CH, and CO Series Poppet Check Valves support working pressures of up to 6000 psig (414 bar) and a temperature range of -10°F to 375°F (-23°C to 190°C). These valves feature a non-adjustable cracking pressure ranging from 1/3 psig to 25 psig (0.02 bar to 1.7 bar) and can be mounted in any direction. A variety of end connections and materials are available. Some series meet ECE R110 and EC79 certification requirements.
CA and COA Series Adjustable Poppet Check Valves feature a compact design with a one-piece body. They offer a working pressure of up to 3000 psig (207 bar) and a temperature range from -10°F to 375°F (-23°C to 190°C). These valves feature adjustable cracking pressure and can be mounted in any direction. A variety of end connections, materials, and spring options are available.
CL Series Metal-Seated Lift Check Valves feature a rugged, all-stainless steel construction with a metal-to-metal seal. These valves are free of spring or elastomers, and their union bonnet design adds safety. The lift poppet is gravity-dependent, with a reverse flow coefficient of less than 0.1% of the forward flow coefficient. These valves prevent reverse flow up to 6000 psig (413 bar) and 900°F (482°C).
CW Series All-Welded Check Valves are designed with an internally threadless, all-welded body, supporting a maximum working pressure of 3000 psig (206 bar) and a cracking pressure of less than 2 psig (0.14 bar). The standard surface roughness is finished to Ra 20 μin. (0.51 μm), with electropolished wetted surfaces as an option. These valves are suitable for high-purity and ultra-high-purity applications.
The most common valve type for directional flow is the check valve. Internal design construction will vary between check valves, but they all serve the same purpose, which is preventing the back-flow of system media. What is illustrated here is inlet flow overcoming a spring force to open the poppet, allowing flow in one direction. If back-pressure exceeds the forward pressure of fluid, the poppet will close preventing flow in the reverse direction.
Directional Flow: Check
- Medium and High Pressure O-Ring Sealed Check Valves, 10C, 15C, 20C, and 60C Series
- Medium and High Pressure Metal-Seated Check Valves, 10CO, 15CO, 20CO, and 60CO Series
- Subsea O-Ring Sealed Check Valves, 10SC, 15SC, and 20SC Series
- Subsea Metal-Seated Check Valves, 10SCO, 15SCO, and 20SCO Series
- Medium pressure check valves，20CG Series
- Low Pressure Medium Flow Check Valves, CHP Series
- Low Pressure High Flow Check Valves, CB Series
- High Flow Sensitive Check Valves, CF Series
- Surface-Mounting Check Valves, CI Series
