All ISOV E Valves are closed by activating a linear 12 or 24 VDC solenoid. The Solenoid Valve generates a large Pull force to release the internal tripping mechanism. Unlike other suppliers of safety valves, ISOV mounted solenoids are equipped with an IP65 rated junctionbox to guarantee safe and reliable wiring. In addition to this, all E versions are equipped with the Manual Pull Handle to close safely in case electric power is lost.
ISOV Failsafe Valves are often used on offshore cranes as well as on Oil and Gas installations whereby the valve has to close whenever electric power is lost. The FS version requires Oil or Air pressure to guarantee its functionality. The basic working principle is that Pressure holds the valve open by energizing a 2/3 way Normally Closed solenoid valve. When power is lost the solenoid creates loss of pressure causing ISOV to trip and close.
The Manual Pull Kit consists of a special Bracket plus internals to be mounted on the ISOV valve and connected by a Cable to the Control Panel Knob which is positioned inside the operators cabin. This kit can be delivered in any length and the Manual Pull Kit can be equipped on all ISOV valves, regardless of ISOV bore size. The Remote Manual Pull Configuration is usually found on mobile equipment, trucks, small welding machines, gensets etc.
The basic working principle is to use Pneumatic Air pressure to activate the operator on ISOV. In this configuration a 2/3 Way Solenoid Valve is used to release air pressure to ISOV. In addition to the Pneumatic Operator, each ISOV valve is equipped with a Manual Release Knob. ISOV Pneumatic Valves are widely used on gensets as well as marine and offshore engines. The Pneumatic version is available in sizes from 2" up to 20" (SO - 508 mm).
The Pneumatic ISOV valve N200 is operated by applying Air or Oil pressure to the pneumatic cylinder integrated in the body. The Pressure inlet port is shown in the adjacent drawing. The pneumatic cylinder trips and closes ISOV when a pressure source is applied. The air or oil pressure is applied by using a 2/3 way solenoid valve as shown on the diagram. After tripping the pneumatic cylinder, ISOV will close and the 2/3 way solenoid has to be reset after which the valve can be opened and latched in the same manner as the Manual version. To increase safety, all ISOV pneumatic valves will be equipped with a manual Pull handle in case the solenoid for any reason may fail due to electric blackout. Standard Pressure inlet ports are 1/8 or 1/4 "size.
The Pneumatic ISOV valve N200 is operated by applying Air or Oil pressure to the pneumatic cylinder integrated in the body. The Pressure inlet port is shown in the adjacent drawing. The pneumatic cylinder trips and closes ISOV when a pressure source is applied. The air or oil pressure is applied by using a 2/3 way solenoid valve as shown on the diagram. After tripping the pneumatic cylinder, ISOV will close and the 2/3 way solenoid has to be reset after which the valve can be opened and latched in the same manner as the Manual version. To increase safety, all ISOV pneumatic valves will be equipped with a manual Pull handle in case the solenoid for any reason may fail due to electric blackout. Standard Pressure inlet ports are 1/8 or 1/4 "size.
The Pneumatic ISOV valve N400 is operated by applying Air or Oil pressure to the pneumatic cylinder integrated in the body. The Pressure inlet port is shown in the adjacent drawing. The pneumatic cylinder trips and closes ISOV when a pressure source is applied. The air or oil pressure is applied by using a 2/3 way solenoid valve as shown on the diagram. After tripping the pneumatic cylinder, ISOV will close and the 2/3 way solenoid has to be reset after which the valve can be opened and latched in the same manner as the Manual version. To increase safety, all ISOV pneumatic valves will be equipped with a manual Pull handle in case the solenoid for any reason may fail due to electric blackout. Standard Pressure inlet ports are 1/8 or 1/4 "size.
The Pneumatic ISOV valve N600 is operated by applying Air or Oil pressure to the pneumatic cylinder integrated in the body. The Pressure inlet port is shown in the adjacent drawing. The pneumatic cylinder trips and closes ISOV when a pressure source is applied. The air or oil pressure is applied by using a 2/3 way solenoid valve as shown on the diagram. After tripping the pneumatic cylinder, ISOV will close and the 2/3 way solenoid has to be reset after which the valve can be opened and latched in the same manner as the Manual version. To increase safety, all ISOV pneumatic valves will be equipped with a manual Pull handle in case the solenoid for any reason may fail due to electric blackout. Standard Pressure inlet ports are 1/8 or 1/4 "size.
The Pneumatic ISOV valve N800 is operated by applying Air or Oil pressure to the pneumatic cylinder integrated in the body. The Pressure inlet port is shown in the adjacent drawing. The pneumatic cylinder trips and closes ISOV when a pressure source is applied. The air or oil pressure is applied by using a 2/3 way solenoid valve as shown on the diagram. After tripping the pneumatic cylinder, ISOV will close and the 2/3 way solenoid has to be reset after which the valve can be opened and latched in the same manner as the Manual version. To increase safety, all ISOV pneumatic valves will be equipped with a manual Pull handle in case the solenoid for any reason may fail due to electric blackout. Standard Pressure inlet ports are 1/8 or 1/4 "size.
The Pneumatic ISOV valve is operated by applying Air or Oil pressure to the pneumatic cylinder integrated in the body. The Pressure inlet port is shown in the adjacent drawing. The pneumatic cylinder trips and closes ISOV when a pressure source is applied. The air or oil pressure is applied by using a 2/3 way solenoid valve as shown on the diagram. After tripping the pneumatic cylinder, ISOV will close and the 2/3 way solenoid has to be reset after which the valve can be opened and latched in the same manner as the Manual version. To increase safety, all ISOV pneumatic valves will be equipped with a manual Pull handle in case the solenoid for any reason may fail due to electric blackout. Standard Pressure inlet ports are 1/8 or 1/4 "size.
Isov Valve N200-E ISOV emergency shutoff valves prevent engine overspeeding by starving off the engine air intake. Prior to starting the engine the manual ISOV emergency valve has to be either visually checked, or by verifying the On/Off Position Switch in the Engine Control Panel.
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