China 3-way pilot operated poppet valve Manufacturer, Supplier, Factory

Richge is a manufacturer of Electric Interlock Mechanisms in China, specializing in sophisticated solutions designed to enhance the safety and reliability of electrical systems. Our electric interlock mechanisms are engineered to provide precise control and prevent unauthorized or unsafe operations in various switchgear applications.

At Richge, we specialize in producing high-quality Switchgear Bearings that ensure the smooth and efficient operation of electrical switchgear systems. Our bearings are crafted from durable materials, designed to withstand the demanding conditions of industrial environments. With a focus on precision engineering and rigorous quality control, we deliver reliable components that enhance the performance and longevity of switchgear assemblies. Committed to innovation and customer satisfaction, Richge provides tailored solutions to meet the specific needs of our clients, ensuring safety and operational excellence in every project.

SOLH 4H series hand lever directional control valves are developed in accordance with mainstream industrial standards, covering 5/2-position and 5/3-position configurations. Operated purely by manual lever manipulation without electromagnetic coils or pneumatic pilot signals, these spool-type manual valves are widely adopted for on-site equipment commissioning, emergency safety shutdown and inching control of double-acting cylinders. Constructed with high-strength aluminum alloy housings and precision spool assemblies, two positioning structures are optional: automatic spring return and steel ball mechanical locking. Crucially, the mounting dimensions are fully consistent with 4V solenoid valves and 4A air-operated valves, enabling direct interchange and flexible switching among electric, pneumatic and manual control modes in standard pneumatic systems. The five-port layout complies with international general specifications: P serves as the main compressed air supply inlet; Ports A and B connect to two cavities of double-acting cylinders to govern extension and retraction movements; R and S are exhaust ports compatible with standard silencers to lower exhaust noise. For 5/2-position models, spring-reset variants automatically rebound once the lever is released to deliver foolproof protection against unintended continuous actions; self-locking versions secure the spool position via steel ball positioning and stay latched until manual switching, ideal for long-duration fixed working states. All 5/3-position units adopt dual stable ball positioning with three configurable neutral modes. Closed Center (Type C) seals all ports to lock cylinders and prevent falling of vertically mounted actuators; Exhaust Center (Type C) vents A/B ports for pressure relief, allowing free cylinder floating during manual testing; Pressure Center (Type P) supplies compressed air to both working ports for synchronous clamping and force balance regulation. Running on filtered compressed air within 0.15~0.8 MPa under lubrication-free conditions, the valves work steadily at -20℃ to +70℃. Available specifications range from 4H200 to 4H400 with multiple thread options. Devoid of electrical components, the valves feature spark-free inherent explosion resistance, well-suited for flammable, dusty and high-risk production sites. They support panel mounting and base installation, frequently applied for production line manual commissioning, emergency pneumatic circuit cut-off, safety interlock loops and retrofitting replacement of automatic control valves.

Richge specializes in the design and manufacture of high-quality Switchgear Auxiliary Plug-ins, essential components for enhancing the functionality and flexibility of electrical switchgear systems. With a focus on precision engineering and durable materials, our auxiliary plug-ins ensure reliable connections and seamless integration within various switchgear configurations. Our products are designed to meet rigorous industry standards, providing safety, efficiency, and longevity in demanding electrical environments. We are committed to delivering innovative solutions that support the evolving needs of the power distribution sector, offering customizable options to cater to specific client requirements.

The 3 Phase Connection Support 630A is an essential component designed for efficient electrical connections in medium to high voltage switchgear systems. This support is engineered to handle currents up to 630A, ensuring optimal performance and reliability in demanding environments.

The Switchgear Bus Support Insulator is a critical component designed to ensure the reliable and efficient operation of electrical switchgear systems. This high-quality insulator is engineered to provide robust support and electrical insulation for busbars, which are essential for distributing electrical power within switchgear assemblies.