Spring-and-poppet check valves are available with nominal cracking pressures ranging from 1/3 to 600 psi (0.03 to 41.4 bar) in 316 stainless steel and brass and with end connections 1/8 to 1 in. and 6 to 25 mm in size.
| Working Pressures | Up to 6000 psig (413 bar) |
| Temperature | –50 to 400°F (–45 to 204°C) |
| Nominal Cracking Pressure | |
| Fixed | 1/3 to 25 psi (0.02 to 1.7 bar) |
| Adjustable | 3 to 600 psi (0.21 to 41.4 bar) |
| Body Material | 316 stainless steel, brass |
| Seal Material | Fluorocarbon FKM, Buna N |
| Flow Coefficient | 0.10 to 4.7 |
| End Connections | |
| Type | Swagelok® tube fittings, NPT, ISO, SAE/MS, VCO® O-ring fittings, VCR® face seal fittings |
| Size | 1/8 to 1 in.; 6 to 25 mm |
