The AQPRT 1250 is pneumatic high pressure control valve designed for regulating and controling the pressure in high pressure systems by passing the needless fluid flowing through the pump back to the waste piping, so the demanded pressure is not exceeded in the system.
The control valve (regulator) is connected between the high pressure pump output and shut-off valve as the end of the high-pressure system (most commonly a high pressure gun or foot valve). The actual amount of required pressure in the system is adjusted by the air pressure above the diaphragm (membrane) of the pneumatic control cylinder.
| technical designation | AQPRT 1250 | |
| Pressure | 0 - 1250 bar | |
| Flow | 80 l / min | |
| Headroom | DN12 mm | |
| Weight | 16 kg | |
| Material | stainless steel |
The high pressure control valve / regulator can be designed for other parameters and non-standard pumped fluids after consultation with our developers.
When the pre-set working pressure in the system behind the control valve is exceeded, it starts to discharge the needless water to the waste piping (most often back to the intake system) and maintain a constant pressure in the system.
If the shut-off valve at the end of the high pressure system (eg high pressure gun) is closed completely, the control valve (regulator) closes the outlet and completely opens the bypass valve, which returns all water back as low preesurized water into the suction system (energy saving and extending lifelong of the pump spare parts). The high pressurized water remains only between control valve and high pressure gun or other high pressure shut-off valve at the end of the system. When the pressure falls down in this part of the system (eg by squeezing the trigger of the high pressure gun or opening any other shut-off valve or leakage in the system), the control valve (regulator) switches to the pressure mode again and re-presses the system to the set pressure.
