UVA Overflow Valves

Back pressure dependent, spring-operated overflow valves. All overflow valves can also be used for refrigerator oil applications.

AWP overflow valves are dependent on back pressure and are spring-operated, their components have not been tested individually. The lifting stem is sealed by two chloroprene o-ring seals. AWP overflow valves are suitable for installation as:
  • safety devices for controlling the high pressure side of compressors,
  • safety devices in combination with two safety pressure control valves whose components have been tested,
  • safety device for protection of closed pipe systems.

  • 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, R134a, R290 (propane), R507 and blends with refrigerator oil; neutral, gaseous and liquid media; glycol-based cold brine
  • Installation position: vertical and horizontal
  • Available valve seat seals: UVAA: PTFE seal, can be used at temperatures of -60 °C to +180 °C UVAB: elastomer seal, can be used at temperatures of -50 °C to +110 °C

UVA Overflow Valves

angle type


steel or stainless steel

Nominal Size

DN 10-32

Nominal Pressure Level

PS 25, PS 40, PS 63

Temperature Range for Standard Valves

UVAA: -60 °C to +180 °C

UVAB: -50 °C to +110 °C

Temperature Range for HT Valve Series

-10 °C to +200 °C


butt welding and flanged ends as per DIN and ANSI, brazed ends, threaded ends
Response Pressure Range
1-25 bar

Get in touch

Armaturenstr. 2
17291 Prenzlau

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