Stainless Steel Solenoid Valves
For applications where the media is not compatible with brass, in some cases a stainless steel bodied solenoid valve is more suitable.
Stainless steel solenoid valves are ideal for use with some aggressive media and chemical applications.
Valve bodies are generally made from stainless steel grade 1.4305 EN 10088/AISI 303 or ASME SA351/351M AISI316L CF3M.
To further improve suitability with aggressive media the shading ring is generally produced from silver as opposed to the more commonly used copper. Silver has a better resistance to the effects of harsh acids and alkali. The shading ring is pressed into the fixed core, the fixed core is seen welded to the armature, which can be seen in the photo below.
To further improve suitability with aggressive media the shading ring is generally produced from silver as opposed to the more commonly used copper. Silver has a better resistance to the effects of harsh acids and alkali. The shading ring is pressed into the fixed core, the fixed core is seen welded to the armature, which can be seen in the photo below.
The pictures here show the seamless connection between armature and body
The advantage of using a one piece armature tube is that is less susceptible to corrosion. In certain cases where the weld is exposed to an aggressive media the weld becomes the weakest point and most likely to corrode and eventually crack.
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Below are example specification sheets for V-Flow Solutions stainless steel solenoid valves:
For use in chemical applications  |  |
For applications with aggressive fluids
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You can view the V-Flow Solution range of solenoid valves here:
The basic principals of a solenoid valve.
The principal of a solenoid valve uses a copper wound coil over an armature housing a fixed core and a moving core. When the coil is electrically energised the moving core is attracted to the fixed core.
When coil is energised, the armature is attracted to the fixed core, the spring is compressed and the valve is opened allowing flow. Lifting the armature to the fixed core consumes more power than holding the armature, this is referred to as the inrush and holding power. The inrush is the power required to lift the armature and the holding is the power required to hold the armature in place.
Optional features that can be added to V-Flow Solutions solenoid valves:
Manual override:
Normally closed direct acting and pilot operated solenoid valves can be supplied with a manual override which allows the valves to be opened independent of electrical current.
How this works:
A small CAM will be built into the valve, below the armature. When the CAM is rotated, it lifts the armature, opening the valve.
Waterhammer control:
Pilot operated solenoid valves can be supplied with a system that has the ability to regulate the closing speed of the diaphragm in order to control waterhammer.
(Waterhammer is caused by an increase in flow pressure through a previously empty valve).
The anti waterhammer device is a needle valve incorporated in the valve body. By rotating the needle valve clockwise the needle valve restricts the orifice reducing the flow rate, thus slowing the closing speed of the diaphragm.
Benefits of V-Flow Solutions solenoid valves:
Robust construction for industrial applications Featuring stainless steel orifice on most models.
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High reliability
Long life
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Stainless steel operators with low residual magnetism according to:
1.4105 EN 10088 (AISI 430F)
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Corrosion resistant
High performance
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High quality seal materials
NBR, FKM, EPDM, PTFE, Sigodur (Filled PTFE), Ruby, Kalrez.
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High compatibility with a wide range of media
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Fully interchangeable coils with a wide range of AC and DC voltages.
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High flexibility with reduced stock
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Coil orientation possible through 360°
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Simple and quick installation
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Coils tested 100% in compliance with the current EC directives.
Compliance to RoHS directive and to relevant international standards upon request.
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Development and realisation of special projects
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Customer tailored solutions
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You can read the rest of V-Flows blogs here.
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For any other products, including: Solenoid valves, Actuators, Actuated valves, Manual valves and much more, please take a look on our website:
http://v-flowsolutions.co.uk/
http://v-flowsolutions.co.uk/
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If you think V-Flow can help you then please contact us:
If you think V-Flow can help you then please contact us:
Telephone: +44 (0)1234 855888
Email: sales@v-flowsolutions.co.uk
Fax: +44 (0)1234 857775
V-Flow are the experts of flow control.
If you have a problem with flow control, we will find the solution.
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