WPV

nozzle check valves

The function of check valves is to allow the media to only flow in one direction but closes when the media flows in the opposite direction. This means they do not need to be manually operated and will instead be fully and automatically operated by the forces caused by the flow of the media. Between the various models there will be differences in closure characteristics. The closure characteristics depend on the flow conditions, valve design and position of the discs in a unique way, and therefore selection of check valve should be done by valve engineers.

Product features

Specifications
Size range:
DN80 – DN1200
Valve type:
Check Valve
Materials:
A wide selection of materials is available; also internal hard rubber lining for saline applications.
Temperature range:-20˚C to +70˚C
Pressure rating:363psi (25 Bar – higher)
Coating:Fusion Bonded Epoxy (FBE)
Colour:
Blue, ca. RAL 5005

Features
  • Both designs have a double bearing system for reliable guiding and operation.
  • The possibility of tuning the spring load for adapting to site conditions at order stage.
  • A variety of material applications.
  • High grade corrosion protection.
  • Silent Check Valve lightweight and short build length means it is more economical solution.
  • Easy installation and handling.
  • Higher head loss.
  • The shaft protrudes into the pipeline when the disc is open. 
  • Lower head loss due to a longer body with specialised streamline flow path.
  • Spring is protected in an enclosed chamber.
  • No shaft protrudes into the pipeline. 
  • Higher weight and cost.
  • More space needed for installation in pipeline.

How the Valve Operates

Designed specifically for corrosive applications. The body and seat are designed to assure non-clogging shut-off/on suspended solids. The valve can be manufactured with replaceable sleeves.

Applications


The valve is suited for pumping stations, treatment plants, reservoirs, pipelines, power stations, desalination plants & industrial applications.

Dimensions and Weights

Dimensions and weights are for guidance only – detailed dimension drawings are available on request.
All dimensions are in millimetres, unless otherwise stated.

Silent Check Valve

Venturi Type Nozzle Check Valve

DNL
Weight
PN10-16
501508
8018012
10019016
12520020
15021025
20023040
25025055
30027080
350290115
400310150
450330195
500350240
600390370
700430455
800470590
900510770
10005501000
12006301570
DNL
Weight
PN10-16
250450150
300500225
350550300
400600380
450650500
500700620
600800800
7009001150
80010001700
90011002500
100012003350
120014004700

Ring Type Nozzle Check Valve

Light Disc Nozzle Check Valve

DNL
Weight
PN10-16
300181140
350215175
400245230
450264340
500305460
600370730
700430930
8005001300
9005601850
10006502500
12007403200
DNL
Weight
PN10-16
25025050
30037075
350290105
400310135
450330180
500350220
600390340
700430410
800470530
900510700
1000550900
12006301420