China Switchgear Interlocking Hardware Manufacturer, Supplier, Factory

SOLH 4A series 5/2-way and 5/3-way air-operated directional control valves are the full pneumatic counterpart of the classic 4V electromagnetic solenoid valve series. Driven entirely by external pneumatic control signals with no coils or electrical parts inside, this valve achieves inherent explosion-proof safety and serves as the core control unit for non-electric pneumatic loops, hazardous explosive areas and safety interlock systems. It adopts high-precision spool configuration and robust aluminum alloy housings, sharing identical installation dimensions and flow characteristics with the 4V series for seamless direct replacement and upgrade between electric-driven and full-pneumatic control schemes. The standard five-port layout follows industry universal specifications: P for main air supply inlet, A and B as working ports connected to two chambers of double-acting cylinders for extension and retraction regulation, R and S as exhaust ports compatible with standard silencers to reduce operational noise. The 5/2-way lineup supplies single pneumatic control and double pneumatic control options. Single air-controlled models switch upon receiving control air signals and automatically reset by built-in springs once the control pressure disappears to deliver fail-safe protection. Double air-controlled variants feature no return springs and lock the current spool position persistently after control air is disconnected, supporting long-duration positioning and pressure retention without sustained control air input. 5/3-way versions are exclusively double air-driven with three selectable neutral configurations: closed center (Type C) seals all ports to lock cylinders and prevent vertical falling; exhaust center (Type E) vents A/B ports to atmosphere for pressure release and manual commissioning; pressure center (Type P) feeds compressed air to both working ports for synchronous clamping and force balance adjustment. Suitable for filtered compressed air within 0.15~0.8 MPa working pressure, the whole series supports lubrication-free operation and works reliably from -20℃ to +70℃. Widely applied in chemical plants, painting workshops, mining and other explosion-risk environments, it cooperates with mechanical valves, hand-operated valves and air pilot valves to build complete all-pneumatic logic control systems for double-acting cylinders.

SOLH 3F pneumatic foot pedal valves, consisting of heavy-duty die-cast aluminum 3F and lightweight plastic 3FM versions for direct replacement of AirTAC counterparts. Supported by self-developed precision sealing technology and automated mass production, sufficient spot stocks are kept with large annual shipments. Equipped with self-reset & locking modes and IP54 protection, they serve fixture clamping, single-acting cylinders and vacuum breaking, stably supplied to machining and automation clients, wear-resistant for high-frequency workshop operation under lube-free compressed air.

Our company is a trusted manufacturer of Main Switchgear Connectors, providing high-performance solutions essential for electrical power distribution systems. We specialize in designing connectors that ensure secure, efficient connections between main switchgear components, contributing to the reliability and safety of power networks. Our connectors are engineered using top-quality materials, offering durability and long-term performance in demanding environments. Committed to excellence, we deliver products that meet strict international standards, supporting a wide range of industrial and commercial applications.

Richge specializes in the development and production of high-quality Switchgear Drawer Moving Parts, focusing on delivering reliable solutions for the global power industry. Our products are known for their exceptional mechanical performance and durability, ensuring stable operation of equipment under high loads and in complex environments. With advanced manufacturing processes and stringent quality control, our switchgear drawer moving parts are widely used in various power distribution systems, helping customers enhance operational safety and system reliability.

Richge specializes in the design and manufacturing of high-quality Electrical Drawer Connectors, essential for seamless modular connections in electrical switchgear systems. Our connectors are engineered for optimal conductivity, mechanical durability, and superior insulation, ensuring reliable performance in medium and low voltage applications. We cater to diverse industries including power distribution, industrial automation, and transportation, providing solutions that enhance system safety, flexibility, and efficiency. With a commitment to innovation and quality,Richge is a trusted partner for customers seeking advanced, dependable electrical connection solutions.

Switchgear drawer slide Product Background: Richge is a manufacturer of Switchgear Drawer Slides in China, specializing in producing high-quality slides designed to facilitate the smooth and reliable operation of drawer mechanisms within switchgear assemblies. Our drawer slides are engineered for precision, durability, and ease of use, ensuring efficient performance and stability in various electrical systems.