NDS Drilling Supply

Wabco air control valves are a convenient way to run air clutches for drawworks, mud pumps, rotary tables and rig throttle.

Click here for wabco air controls page 11e

2HA2 & 2HA2Z

• 2HA2 is a detent valve mainly used to directly operate the diaphragm in an air clutch (the handle remains in place and does not spring return)
• 2HA2Z is a 3-position spring return valve mainly used to operate an air cylinder that throws in a mechanical clutch

H2X Valve

• H2X is a Spring return valve typically used for directly operating the air clutch on a drawworks

H2FX Valve

• H2FX is a Detent valve that is typically used to operate truck engine speed/RPM (handle remains in place and does not spring return)

H4 Valve

• H4 Knob style valve used to operate the truck engine speed/RPM