All valve series utilize a non-rotating rising stem design, with working pressures to 150,000 psi (1379 bar). Tubing sizes range from 1/4" to 1". Tubing connections utilize Autoclave Engineers coned and threaded design or our Speedbite Ferule Style connections for pressures up to 15,000 psi. Operating temperatures from -423°F to 1200°F (-252°C to 649°C). 316 stainless steel construction, other material options available.