Pneu-Trol Needle Valves

• Optional Bubble-Tight Check Valve Available

Flow Control 

A spring biased ball or optional poppet check provides full flow in one direction; a stainless steel, tapered needle provides a wide range of adjustment of flow in the controlled direction. A locknut prevents unwanted changes in adjustment. A tamperproof adjustment key is standard; a knurled knob is optional at slight extra cost.

A wide range of flow adjustment is possible because of the fine thread, tapered needle. Unwanted changes in  adjustment are prevented by a locknut. A tamperproof adjustment key is standard; a knurled knob is available at slight extra cost.

A slight pressure differential fully opens or closes the ball or poppet check valve. This valve is available with either ball check or bubble-tight poppet check.

Maximum Operating Pressure (Non-Shock Service)

Operating Temperature Range (O-Ring Packing)