Pressure Sustaining/Flow Limiting Valves

1800 SCOPE OF SUPPLY & DESIGN STANDARDS
RANGE OF SIZES: DN50 – DN1000
PRESSURE RATINGS: PN10 AND PN16
TEMPERATURE RANGE: -20°C TO +70°C
DESIGN AND TYPE TO: EN1074-5
FACE-TO-FACE DIMENSIONS: ACC. TO ISO5752
FLANGE DIMENSIONS: EN1092-2 (DIN2501)
HYDROSTATIC TESTING: EN12266 AND ISO5208
TYPE TESTING TO: EN1074 (1&5)
1800 FIELDS OF APPLICATIONS
– Water pipelines and distribution networks
– Irrigation pipelines and networks
– Ground reservoirs and elevated tanks- Pumping Stations
– Water hammer systems
– Water treatment plants

SERIES 1800 is a hydraulically operated, diaphragm
actuated, control valve that is used as check valve which allows one way flow only.
Under normal operating conditions the valve opens to allow forward flow. In case of reverse
pressure, the pressure at the outlet becomes higher than the pressure at the inlet. This higher
pressure closes the valve thereby preventing back flow.