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SIRAI

SIRAI solenoid valves and switches have been successfully applied in a variety of industrial sectors since 1946. In the sixties, Sirai began to specialise in solenoid valve related products, encouraged by the experience gained initially from its production of process instrumentation and as a response to the requirements of an increasingly automated market. Since then, Sirai has constantly searched for innovative solutions, diversified for the various fields of application,

SIRAI solenoid valves are divided into 4 main categories:
• General Purpose
• Micro
• Total Isolation
• Pinch

SIRAI Solenoid Valves

The SIRAI® range of general purpose solenoid valves makes them the ideal solution for a wide variety of industrial applications.

They are particularly suitable for the control of water, air, inert gases, steam and non-aggressive fluids in general.

The strong compact body and the technical solutions adopted permit reduced overall dimensions, reduced installation times and targeted maintenance.
Produced in 2/2 or 3/2 normally closed, open or universal service versions plus proportional control and latching versions.

The numerous standard models, the special versions already available in the catalogue and the possibility of developing new valves to satisfy specific needs, mean that SIRAI can provide solutions for the most complex applications

SIRAI® micro solenoid valves constitute a specific response to the growing demand for small size low power control components, created by the constantly increasing integration of electronics and industry.

A natural development of general purpose solenoid valves, micro solenoid valves can control a variety of non-aggressive liquid and gaseous fluids.
In addition to maintaining an excellent balance between miniaturisation and reliability, the construction solutions adopted provide the possibility of disassembly for cleaning and maintenance.
Produced in 2/2 or 3/2 normally closed, open or universal service versions plus proportional control and latching versions.
The enormous range of models makes these valves suitable for several applications; the micro solenoid valves can be produced according to customized drawings and with materials and performances different from the standard models in the catalogue to meet specific or particularly complex requirements.

SIRAI® total isolation solenoid valves (DRY) combine the traditional characteristics of strength and reliability with construction solutions that make them particularly suitable for the control of aggressive and/or non-contaminable fluids.

The fluid is in contact only with the valve body and the isolation lever or isolation diaphragm; in this way the fluid is protected from any chemical contamination and/or thermic shock.
Produced in 2/2 or 3/2 normally closed, open or universal service versions plus miniaturised, silent versions and with a latching actuator.
The numerous versions available, the variety of materials employed and the possibility of studying special solutions make this range of solenoid valves particularly versatile, suitable for applications in the food, biotechnology, chemical/pharmaceutical and physiological/medical sectors.


The SIRAI® pinch valve range has an operating principle that is somewhat different from the other three solenoid valve ranges.

The pinching device is moved by a solenoid operator and cuts off the fluid by pinching or releasing tubing in soft silicon (or other soft material). The fluid can flow in either direction with a high rate of flow, without turbulences and without dead spaces. 
Thus, pinch solenoid valves can control all the fluids that are compatible with the tubing material, protecting them from all contamination, including temperatur

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