Pilot-Operated Solenoid Valves |
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Description
pilot-operated
Internal pilot-operated (servo) valves normally have a pilot and bleed orifice, which enables them to use line pressure for operation. When the solenoid is deenergised, the pilot orifice is closed and full line pressure is applied to the top of the piston or diaphragm through the bleed orifice, providing the seating force for tight closure.
This operation method requires a certain difference in the pressure across the valve ports.
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AL 03
2/2 way solenoid valve with diaphragm
![2/2 way solenoid valve with diaphragm al03 2/2 way solenoid valve with diaphragm al03](images/stories/Produktbilder_Shop/VT/al03.jpg) |
• No energised port P
closed by spring return (NC).
• G 3/8" - G 2", DIN ISO 228
• Flow medium:
Neutral, gaseous and liquid media
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p
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AL 07 / 08
2/2 way solenoid valve with piston
![2/2 way solenoid valve with piston al07_08 2/2 way solenoid valve with piston al07_08](images/stories/Produktbilder_Shop/VT/al07_08.jpg) |
• No energised port P
closed by spring return (NC).
• G 3/8" - G 3/4", DIN ISO 228
• Flow medium:
Neutral, gaseous and liquid media |
p
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i 145
2/2 way solenoid valve with diaphragm
![2/2 way solenoid valve with diaphragm i145 2/2 way solenoid valve with diaphragm i145](images/stories/Produktbilder_Shop/VT/i145.jpg) |
• For high temperature
• No energised port P
closed by spring return (NC).
• G 3/8" - G 1", DIN ISO 228
• Flow medium:
Hot water, steam and other media
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p
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28
2/2 way solenoid valve
![2/2 way solenoid valve 28 2/2 way solenoid valve 28](images/stories/Produktbilder_Shop/VT/28.jpg) |
• Flange-connection
• DN 15 - 50
• No energised port P
closed by spring return (NC).
• Flow medium:
Neutral, gaseous and liquid media |
p
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AN 03
2/2 way solenoid valve with diaphragm
![2/2 way solenoid valve with diaphragm an03 2/2 way solenoid valve with diaphragm an03](images/stories/Produktbilder_Shop/VT/an03.jpg) |
• No energised port P
opened by spring return (NO).
• G 3/8" - G 2", DIN ISO 228
• Flow medium:
Neutral, gaseous and liquid media |
p
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160
2/2 ways plastic solenoid valve
![2/2 ways plastic solenoid valve 160 2/2 ways plastic solenoid valve 160](images/stories/Produktbilder_Shop/148.jpg) |
• No energised port P
closed by spring return (NC).
• d20 - d 63, G 1/2 - 2", DIN EN 175301-803
• Flow medium:
Aggressive fluids and gases |
p
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