Show menu

High pressure control valve - Pneumatic regulator

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
Price (excl. VAT)
on request


  • function: by-pass, overflow, closure and safety valve
  • easy control and regulation of working pressure
  • suitable for automation and frequent changes of the pressure
  • stainless steel all hydraulic parts in contact with pumped liquid
  • vacuum hardened functional elements
  • medium: water, oil and emulsions

The high pressure control valve / regulator can be designed for other parameters and non-standard pumped fluids after consultation with our developers.

Technical parameters


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.


In the case of demand, by deactivating the switch-off function, the control valve (regulator) can be used as high pressure relief valve.

This site uses cookies to optimize effective service delivery. If you do not change your cookie settings, we understand it as agreeing to their use.

Necessary cookies help make a website usable by enabling basic functions like page navigation and can be changed only in the settings of your browser. Learn more

Statistic cookies help website owners to understand how visitors interact with websites by collecting and reporting information anonymously by saving first and third party cookies on your device. These cookies do not allow the identification of data subjects. We collect and process these data for statistical purposes where the result of the processing is not personal data according to EP and Council Regulation 2016/679. These cookies can be changed within your browser settings. Learn more

Marketing cookies are used to track visitors across websites and they are shared with our advertising partners. The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third party advertisers. They work on the basis of the uniqueness of your browser and device. If you do not allow these cookies, you will not see our promotions and ads on different websites.