2S040-10 SUS-10 3/8'' Inch Direct Acting SS304 Solenoid Valve

2S040-10 SUS-10 3/8'' Inch Direct Acting SS304 Solenoid Valve

Technical Data of 2W & 2S Solenoid Valve:

Main dimension of 2W & 2S Series Solenoid Valves:

How to choose normally open or closed solenoid valve?
In general, we select solenoid valve type according to the continuous working period. Common types include normally open, normally closed and self-retaining type. Specific rules as blows:

When the solenoid valve has prolonged on state, and the opening time is much longer than the closing time, we choose normally open solenoid valve.
When the solenoid valve has long-term off state, and the closing time is much longer than the opening time, we should choose normally closed solenoid valve.
When the solenoid valve requires same time on the opening and closing, we should choose self-retaining type solenoid valve, also called double acting type.
For some working conditions used for safety protection, such as the furnace flame detecting and other conditions, normally open solenoid valve is not applicable; we should choose long-term electricity type.
For gas leak alarm device system, we should choose normally open type gas emergency shut-off solenoid valve. After closing, the solenoid valve should be started up manually.

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