Tilting Disc Check – Sizing and Pressure Drop
The chart below allows you to size a tilting disc check valve to give a specific pressure drop against a given flow rate of water. However, for air, steam, gases or other liquids you should consult our Sales Office for the sizing of Tilting Disc Check Valves.
Northvale Korting has invested in computer-aided design facilities and, to this extent, we can size valves for your applications and give accurate predictions of pressure drops etc. As such we require the following information:
Preferred units shown
|PRESSURE DROP MAX.|
Oversize Tilting Disc Check Valves
Oversized tilting disc check valves should not be used as this causes the disc to flutter and will quickly wear out the spindle bearings.
The lines a to d on the graph below represent the point at which the check valve attains its fully open position and therefore its correct sizing for its relative installation orientation.
a. Horizontal line with spring
b. Vertical line with spring
c. Horizontal line without spring
d. Vertical line without spring
The Tilting Disc Check Valve, when supplied, has an intended maximum leakage rate through the body/disc seating area of 1cm3per minute irrespective of valve size. This meets the requirements laid down for this test under API 598 and ANSI B16.34/MSS SP-61.
|1 m water guage||3.28||feet water guage|
|1 m3/hr water||0.28||litres/sec|