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Pressure reducing valves
Series 681

 
Pressure reducing valves Series 681
Series 681 Detail 1
Series 681 Detail 2
Series 681 Detail 3

Pressure reducing valves made of gunmetal, with threaded connections

A particularly robust pressure reducing valve in all-metal design, which has proven itself not only in drinking water applications but also in harsh operating conditions in industrial applications or in cases of fluctuating environmental temperatures. This pressure reducing valve is also suitable for hot water applications. Stability and reliability: The set outlet pressure at zero-usage is held constant even in the case of greatly varying inlet pressures.

  • Examples of use
  • Approvals
  • Downloads

For the protection of:

  • domestic water supply systems
  • commercial and industrial plants

against too high supply pressure.
 
Pressure reducers are used, if within a piping system despite of varying pressures on the inlet side a certain pressure must not be exceeded on the outlet side.

  • potable water supply according to DIN 1988
  • process water supply in industrial-and building technology
  • snow-making equipment
  • fire-fighting equipment and sprinkler systems
  • shipbuilding industry and offshore plants

DIN-DVGW type examination

Type approval ACS

Type approval WRAS

GOST-R

 

Requirements

DIN DVGW guidelines
DIN EN 1567
DIN 1988
DIN EN ISO 3822
PED 97/23/EC

Filename Filetype  
15. 681_481-DVGW-Zertifikat
DVGW Zertifikat / DVGW Certificate
15. 681_481-DVGW-Zertifikat pdf
Assembly and maintenance instructions for pressure reducing valve
481 (SP/HP/LP), Typ 681 (SP/HP/LP), Typ 482 (SP/HP/LP), Typ 682 (SP/HP/LP)
Assembly and maintenance instructions for pressure reducing valve pdf
Data sheet Series 681
Data sheet Series 681 pdf


Suitable for
Liquids neutral
Air, gases and vapours neutral
Warm water
Material

Gunmetal

Specification

1/2" - 2"

- 10°C to + 95°C

Inlet pressure: up to 30 bar
Outlet pressure: 0,5 to 15 bar
(depending on version)

Certificates
Data sheet/Capacity table