Pressure loading valves provide a constant counter-pressure and prevent siphoning They are installed in the discharge line after the pressure relief valve

or on the pressure relief valve

DDA 17-7 FC-SS/T/SS-F-31AAFG The SMART Digital DDA is a compact positive displacement

DDA 30-4 FCM-PVC/V/C-F-31I002F The SMART Digital DDA is a compact positive displacement

the duration of the discharge stroke varies

crne 3 17 n p a v hqqv 93149214 Pressure loading valves provide aVertical, multistage centrifugal pump with inlet and outlet ports on same the level (inline). Pump materials in contact with the liquid are in high grade stainless steel. A cartridge shaft seal ensures high reliability, safe handling, and easy access and service. Power transmission is via a rigid split coupling. Pipe connection is via PJE (Victaulic) couplings. The pump is fitted with a 3 phase, fan cooled, permanent magnet, synchronous motor. The