opens in direct response to any power failure even prior to the pressure drop associated with abrupt pump stoppage. the pre-opened valve dissipates the returning high pressure wave, eliminating the surge. the - -m, sensing line pressure, smoothly closes drip-tight as quickly as the relief feature allows...
control filter c l i c k h e r e t o h i d e b o m needle valve home view c l i c k h e r e f o r c o n t r o l a c c e s s o r i e s electronic control valve model - en/es electronic control valve that combines the advantages of an excellent modulating, line pressure driven, hydraulic control valve with...
r e f o r c o n t r o l a c c e s s o r i e s deep well/booster pump circulation electric control valve model en/es hydraulically operated, deep well pump control valve that adds advanced "active check valve" logic to standard pump systems. the valve branches off the main line and is synchronized with...