Features:​ Built-in metal strainer blocking particulate impurities to protect the main spool from foreign object jamming; valve position status feedback switch uploading fully-open/fully-closed status signals to the turbine control system; de-energize-to-shut-off logic directly cutting fuel supply upon power loss to ensure unit safety; valve body resistant to hydrogen sulfide corrosion for industrial gas media conditions; modular integrated structure allowing easy disassembly and replacement without breaking down the entire fuel pipeline.

Applications:​ Gas turbine fuel intake main pipeline cut-off protection; combined-cycle cogeneration unit gas shut-off; industrial gas engine fuel safety circuits; blast furnace gas-driven turbine fuel cut-off.

Materials:​ Aluminum alloy forged body; hardened stainless steel spool components; fluororubber and PTFE composite seals; flame-retardant engineering plastic coil housing; 316L stainless steel woven mesh built-in strainer.

Structure:​ Fully integrated valve assembly with the electromagnetic coil junction box on top, media inlet/outlet flanged ports on the sides; the valve body internally integrates a filtration chamber, main valve chamber, and spring return chamber; a mechanical valve position feedback switch is mounted on the side; all electrical interfaces are centrally arranged in an independent junction compartment.

Working Principle:​ During normal operation, the control system outputs 24 VDC to the solenoid coil; the electromagnetic force drives the main spool to shift, conducting the fuel pipeline. Upon a unit trip fault signal or system power loss, the electromagnetic force disappears, and the return spring pushes the spool to reset rapidly, cutting off the fuel path. Simultaneously, the valve position switch outputs a valve-closed status signal to the upper control system.

Installation & Precautions:​ Install according to the media flow direction marking on the body. Reverse installation is prohibited.