In the event there is over pressurization in the hydraulic system, this by-pass valve will open, allowing the excess water to drain out. It can also be used to adjust the pump dispensing pressure.
The M12 x 1.0 mm female fitting connecting this valve to the pump piston fitting only works on the threads of the Fluid-o-Tech pumps and valve fittings with two exceptions: the Ascaso I.2820 (M x F) and I.5213 (M x M); no other fittings will work.
1/8" Female BSP fitting, NBR seal. Fluid-o-tech #B2E.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.