Pinch Valves

Pinch valves are particularly suitable for applications where high levels of hygiene are required.

This design is fundamentally different to traditional valves in that a seat and membrane is not necessary. Flow is controlled by pinching the inserted tube which avoids turbulences in the fluid flow and virtually eliminates dead areas in the valve housing where medium or dirt can collect.

The resistance against chemicals depends on the selected material of the tube.

These valves are available in NO, NC and 3/2-way configurations.

Main characteristics:

Aluminium body
HART-COAT® surface refinement permanently protects the body from wear and corrosion.

Adjustable coil position
The coil can be fixed in any position through 360°.

Easy to change tubing
By manually opening the pinch mechanism the tube can be easily inserted or removed. Manual operation is also possible in case of power failure.

Servo controlled Solenoid Valves

When the water supply for devices such as dental appliances or cleaning equipment is automatically controlled, servo controlled solenoid valves are used. These are also suitable for the control of drinking water, as well as physically and chemically similar media.

Servo controlled valves need a minimum pressure difference of approx. 0.02 MPa (~ 0.2 bar) between the inlet and outlet to function.

This design uses the medium pressure to operate so the actuator can be relatively small, making the valves compact.

To meet the different installation conditions, common threads and barbed fittings as well as coil systems for common voltage ranges and frequencies are available.

Valves of this type are usually straight-through or angle valves and can be designed as multi-chamber valves also. Depending on the version it can be equipped with an upstream integrated strainer. By applying different flow regulators into the valve inlet, the flow rate can be limited, which helps to save water.

Drain Valves

Drain valves can be supplied for either normally closed (NC) or normally open (NO) operation. They are designed specifically to be part of cleaning processes within medical applications and meet the stringent requirements of this highly sensitive sector.

Materials are carefully selected for their suitability, for example, PVDF and stainless steel valve housings provide optimal resistance when used with chemicals and other aggressive media.

Special features:

Emergency manual override
Valves can be equipped with an emergency manual override, to ensure the drainage of the tank even in the event of power loss.

Rinse nozzle
This nozzle enables cleaning of the valve itself. Regular flushing after use helps eliminate dirt and chemical residues to maintain performance and longevity of the valve.

Rolling membrane
A specially developed rolling membrane made of FKM protects the internal magnetic system from corrosion and enhances the chemical resistance of the valve.

Valves for Haemodialysis

This series of valves were developed specifically for use in haemodialysers and other medical devices and their design recognises the stringent requirements of medical applications.

Used as either inlet or outlet valves in balance chambers of dialysers, these valves control media flow of the haemodialysis concentrate in both flow directions, without leakage across the entire pressure range.

These valves are characterised by:

Durability and long life expectancy
The use of biocompatible and physiologically suitable high quality plastics ensure long product life whilst in contact with media such as haemodialysis concentrate, disinfectants and cleaning solutions.

At least several million cycles
Every batch of valves produced is tested before delivery to the customer. Only after passing several million cycles without failure will we release goods for despatch.

Chemical disinfection
Due to the selected high grade materials it is suitable for chemical disinfection, even at high temperatures.