Valves and Fittings | μInProve


μInProve Purged Lip Sealing Valve technology

The most reliable and durable analytical valve technology

The PLSV (Purged Leap Sealing Valve) is a disruptive analytical valve technology that exceeds the lifetime of a diaphragm valve and has the constant pressure drop and the simplicity of a conical rotary valve. By design, it is also impossible for this valve to develop a cross port leak. This new technology is based on a reduced sealing surface area offered by the valve's inserts that replaces the traditional rotor and an innovative purge system. This revolutionary technology has been designed to meet our most elevated standards that we demand for.

  • No leak - Inboard/outboard and cross port leaks are impossible due to unique purge technologypatent pending
  • Long life time - Over 1 million actuations in UHP applications due to unique reduced surface area insert technologypatent pending
  • Constant pressure drop - No change in pressure/flow drop characteristic across temperature range and life span
  • No dead volume - Internal flow path contains no unswept volume
  • Small footprint - With the use of our compact actuator, install multiple valves in a constrained space, replacing diaphragm valve in existing

μInProve Products

Leaks virtually impossible by design

The leak integrity performance is achieved by the unique purge conceptpatent pending. The purging principle involves purging channels which are located in between two adjacent valve channels and valve head purging pockets which are machined into the valve head. The purging pockets are used to connect the purging inlet and outlet together through the purging channels and allow purge gas to flow freely from the purge inlet to outlet. With this concept, it is impossible to have an inboard/outboard and crossport leak as the volume around the insert and in between ports is continuously purged.

Improve lifetime with reduced surface sealing area

The valve wearing and friction has been reduced by optimising the sealing surface area. The sealing leap size and shape design has been optimised using finite element modeling (FEM) and real life testing. The result is a sealing surface area which is equal to 14% of a standard conical rotary valve.

Furthermore, the insert material is specially treated by a proprietary process in order to improve the surface finish, hardness and creeping.