Regulating / hand expansion valves are regularly used at the evaporator in liquid circulation systems. Also these valves are used in liquid circulation systems before a vessel. Here they prevent high pressure fluctuation in the vessel when fluid stream into the vessel.

In order to function as a regulating valve, each NB size has a 'valve-cone' has a unique form. The shape of the cone and the percentage of opening of the valve determines the m3/h flow and/or pressure drop. Use the Revalco selection software to determine the correct valve.

 
General features:
1. Application in 'normal' and ‘high pressure' installations is possible. Supplied as PN40 design and PN52 optional.
2. Low weight and compact design simplify handling
3. Modular build up 
4. Large bonnets and 67 degree bonnet (straight execution) make spindle and bonnet extensions superfluous
5. Quick valve installation without dismounting of the bonnet