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Normally pump protection valves are limited to minimum flow protection; however, severe damage can occur to the pump and driver by exceeding the intended operating range of the pump. Damage due to excessive flow can be eliminated by designing a “Maxi-Flow” as an addition to the standard minimum flow valve. Excessive flow …

One of the most common means of valve damage is start up debris. Regardless of how clean the system is, weld pearls, wear ring particles and other items seem to end up inside control valve internals and damage seating surfaces enough to cause premature leakage. …

Q. Can DATIAN products by returned for Factory repair? Yes! Please contact DaTian for a return authorization number to return to us. Once received, the returned goods will be evaluated and a repair quote provided. Q. We do not have time to return our products …

Proper maintenance and service is essential for reliable pump protection. Poor maintenance practices and the use of NON-OEM parts can severely compromise the pump protection. We provide: • Extensive parts inventory manufactured to original specifications including any design upgrades. • Experienced Engineers and Technicians. • …

1)     Working principle The main disc of the valve will located at some position depending on the main flow rate. The main disc drives the bypass disc through the action of bypass stem, which will adjust the bypass flow rate and pressure to the preconcerted …