Haskel
 (psi)
 
   
Check Valves
Butech Ball Valves are used to prevent reverse flow in a line. The Ball Check Valves are ideal when leak tight shut-off is not necessary. This valve uses no elastomers and employs a metal to metal seal. The temperature range for the Ball Check Valves is -420° F to 1200° F (-251° C to 648° C).

The O-Ring Check Valves reliably prevent backflow where leak-tight shutoff off of liquids or gases is required. The standard construction uses a Buna-N o-ring, the O-Ring Check Valve is also available with the following O-rings: Viton, Teflon and Kalrez.
Temperature ranges for the O-Ring Check Valve is:
Buna-N -65° to 250° F (-54° to 121° C)
Viton -40° to 500° F (-40° to 260° C)
Teflon -320° to 400° F (-195O to 204° C)
Kalrez -25° to 550° F (-29° to 288° C)

All Butech Check Valves have a default cracking pressure of 15 psi. To order the valve with a different cracking pressure, you can indicate your desired cracking pressure when you select “Add to RFQ”.