We stock a selection of Griffco Valves and parts.  Back pressure and pressure relief valves from 1/4″ to 2″ with a wide range of materials available. Externally adjustable from 0 to 250 psi.  Also, calibration cylinders from 100 to 20,000 mL in size with direct gph readout available in PVC and Borosilicate Glass.


Back Pressure and Pressure Relief Valves

Griffco manufactures Back Pressure and Pressure Relief Valves.

Calibration Columns


Griffco Calibration Cylinders are available in PVC and borosilicate glass.