Spool Check Valve

The Spool Check Valve was designed to assist the travelling valve in opening during the down stroke on gaseous wells. The gaseous fluid in the pump chamber tends to delay the opening of the travelling valve because of its compressibility. The pressure above the plunger is greater than the pressure below the plunger. With standard pumps much of the down stroke is used to compress the mixture in the pump chamber. The spool check valve removes the pressure off the plunger valve therefore allowing it to open sooner and increasing the pump efficiency.

The spool check valve is available for stationary barrel bottom hold down pumps in brass or hardened stainless steel. The spool check valve also works as an excellent sand check valve.