RV Check Valves

Check valves open automatically by the pressure which is exerted by the medium upon the valve disc. They close as soon as the flow is interrupted or the flow direction is reversed.

AWP check valves are open autonomously by the pressure which is exerted by the working medium upon the valve disc. They start to open at a differential pressure of 0.01 to 0.05 bar and are fully open between 0.1 and 0.2 bar. As soon as the flow is interrupted or the flow direction is reversed, the valve closes automatically. A built-in damping device makes this type of valve especially suitable in cases where capacity requirements fluctuate. AWP check valves are designed for installation in the refrigerant circulation of industrial refrigeration systems. They are installed on the pressure or suction side of compressors or in pipes in which only one direction of flow is intended.

Technical Features

  • Available in steel or stainless steel
  • Selection of body material as per German DIN EN12284, AD2000 Series W
  • Working mediums: refrigerants as per EN 378 p. 1, e. g. NH3, R22, R134a and blends with refrigerator oil; neutral, gaseous and liquid mediums; glycol-based cold brine
  • Can be installed horizontally and vertically for upward flow direction
  • Optionally available without damping

RV Check Valves

straightway or angle type


steel or stainless steel

Nominal Size

DN 6-150

Nominal Pressure Level

PS 25, PS 40, PS 63

Temperature Range

-60 °C to +150 °C


butt welding and flanged ends as per DIN and ANSI, brazed ends, threaded ends

Get in touch

Armaturenstr. 2
17291 Prenzlau

Phone: +49 3984 8559-0
Fax: +49 3984 8559-18