China Switchgear Busbar Support Manufacturer, Supplier, Factory

Richge specializes in high-quality switchgear solutions, including advanced Switchgear Pull Interlocking Mechanism. Our pull interlocking mechanisms are designed to ensure safety and reliability during switchgear operations. Precision-engineered to prevent accidental operations, they are suitable for high-frequency use. With excellent craftsmanship and innovative design, our interlocking mechanisms are widely used in the power and industrial sectors, enhancing both equipment safety and operational convenience. Choose us for efficient, safe switchgear interlocking solutions that meet international standards.

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.

SOLIH AF series pneumatic air filter, industrial compressedair prefilter for air source treatment systems. 5μm dual centrifugal & fiber filtration removes water, oil mist, dust and rust. Manual/Auto drain options, modular design combinable with AR regulator & AL lubricator into AC units. Models AF2000–AF5000 with Rc1/4"1" ports, ideal for protecting cylinders, solenoid valves and pneumatic tools.

SOLH ASC series one-way exhaust throttle valve, AirTAC standard aluminum alloy in-line pneumatic flow control valve. Thread-type without push-fit joint, lock anti-vibration adjustment nut, exhaust throttling for double-acting cylinder speed regulation. Models ASC100-06, ASC200-08, ASC300-10, ASC300-15 with PT/G/NPT thread options, ideal for general-purpose automated pneumatic circuits.

SOLH 3A series 3/2-way externally air-operated directional control valves are manufactured in accordance with mainstream industry standards. Driven entirely by pneumatic signal input without any electromagnetic coils, this series is engineered to govern extension, retraction and pressure retention of single-acting pneumatic cylinders. It serves as the critical safety control element for all-electric-free pneumatic circuits, hazardous explosive atmospheres and fail-safe industrial machinery. The standard three-port layout follows universal industrial definitions: P for main compressed air supply inlet, A for working outlet connected directly to single-acting cylinders, and R for exhaust port for pressure relief and rapid spring reset. Two control configurations are available. Single pneumatic control models (3A×10) switch upon receiving external air signals and automatically reset via built-in springs once the control air signal is removed to guarantee fail-safe reset performance. Double pneumatic control variants (3A×20) adopt latching spool structure, locking the valve position persistently even after control air is disconnected to sustain long-term clamping and positioning. Constructed with high-strength aluminum alloy valve bodies and precision-machined spools, the valves support oil-free operation under filtered compressed air with filtration precision above 40 μm within the working pressure range of 0.15~0.8 MPa. Four dimensional specifications from miniature 3A100 up to heavy-duty high-flow 3A400 cover M5 to G1/2 thread connections, and NPT threads are optional for overseas projects. Without internal electrical parts, the valve features intrinsic explosion-proof performance, perfectly suited for flammable, dusty and humid working environments. It supports random multi-angle installation and manifold assembly for modular valve banks, widely deployed in workpiece clamping mechanisms, pneumatic safety interlock systems and long-duration positioning stations.

Richge specializes in high-quality Switchgear Operating Shafts designed to meet the rigorous demands of the electrical industry. Crafted from premium materials, our operating shafts ensure exceptional durability and stability, even in harsh environments. With a precision design, they are easy to install and enhance the efficiency of switchgear operations. Whether for new installations or existing systems, our Switchgear Operating Shafts deliver reliable performance and improve overall operational effectiveness. We are committed to providing the best product solutions and superior service to support the seamless operation of electrical equipment.