China SOLH VT325 valve Manufacturer, Supplier, Factory

Richge is a manufacturer of Switchgear self-locking device in China, specializing in high-precision components designed to enhance the safety and efficiency of medium-voltage switchgear systems. Our Switchgear self-locking device are engineered to provide reliable protection and control, ensuring secure operation in electrical switchgear assemblies. The Switchgear Self-locking Device is a security mechanism used for the electrical switching device, ensuring that the switching device, such as the circuit breaker, isolation switch, and load switch, can maintain the secure state during operation. The device is designed to prevent accidental operation or misoperation and to ensure that the equipment will not be re-operated in the event of power failure or other dangerous situations, thereby improving operator safety and equipment reliability.

Outer door switchgear drawer Our company specializes in manufacturing high-quality outer door switchgear drawers, designed to enhance safety and accessibility in electrical systems. Engineered for durability and precision, our drawers provide reliable protection and easy access, ideal for various industrial and commercial applications.

Product Details and Application ofSide wiring secondary connecto The Side wiring secondary connecto is a crucial component designed to facilitate secure A side-wired secondary connector is an electrical connector used for secure, side-entry connections of secondary circuits, such as transformers or distribution systems. Used to connect sensors, control relays or other secondary components that require fast and reliable electrical connections These connectors are especially important in applications where space limitations or easy maintenance are considered, and are used for secondary connections to power distribution boards, ensuring safe and reliable terminals. Switchgear and control panel: Designed to adapt to various environmental conditions, such as high temperature, low temperature, high humidity, etc. The metal parts are treated with rust removal, spraying, painting, etc., to improve their corrosion resistance and aesthetics.

The 8PT Drawer Plate is a critical component in modern electrical switchgear systems, designed to provide robust support and secure housing for various electrical connections and components. Made from high-quality materials such as galvanized steel or aluminum, the 8PT Drawer Plate is engineered for durability, strength, and excellent resistance to corrosion and wear. This ensures long-term performance and reliability in harsh industrial environments.

SOLH MSZ three-position rack-and-pinion pneumatic rotary cylinders are dedicated rotary actuators engineered to achieve three-point locking positioning (left limit / intermediate stop / right limit), solving the limitation of conventional two-position rotary cylinders lacking mid-station positioning. This series only needs one 5/3-way center-pressure solenoid valve for full position switching, removing complicated dual-valve pneumatic circuits to simplify system layout and lower overall engineering costs. The intermediate locking position supports ±10° fine angular adjustment, while the left and right travel limits are separately tunable within 0~95°, delivering flexible multi-angle positioning. It is classified into four specifications: basic MSZB, high-precision MSZA, rubber buffer MSZB-R and hydraulic buffer MSZA-R. The dual-rack dual-piston internal structure effectively eliminates gear backlash and outputs steady torque during frequent position switching. The integrated rotary plate comes with reserved locating pin holes for direct workpiece installation, paired with a central hollow through-hole to pass wiring and air tubing neatly. Standard side sensor grooves fit D-M9B & D-A93 magnetic switches to realize real-time signal feedback of three working stations. MSZA boasts positioning accuracy up to ±0.02 mm, while hydraulic buffer variants absorb large collision energy perfectly for high-speed heavy-duty rotation. Adopting oil-free self-lubricating design for long-term stable running, this rotary cylinder is widely deployed in workpiece sorting diversion, multi-station indexing, electronic positioning inspection and packaging automated steering flip procedures.

SOLH 3V series 3/2-way pneumatic solenoid directional control valves are engineered with both direct-acting and pilot-operated structures, tailor-made for driving single-acting spring return cylinders and switching vacuum pneumatic circuits. Available in Normally Closed (NC) and Normally Open (NO) configurations, this series adopts high-strength lightweight aluminum alloy valve bodies with compact layout, rapid response and IP65 dustproof & waterproof protection grade, acting as the standard core control component for small and medium-sized pneumatic automation systems. The port layout follows universal industry standards: P for main air inlet, A for execution working port connecting cylinders or vacuum suckers, R for exhaust port matched with silencers to lower operational noise. Direct-acting 3V1 and 3V2 variants support reliable zero-pressure startup within 0~0.8 MPa with switching response under 0.05s, perfectly fit for low-pressure gas pipelines and negative-pressure vacuum control scenarios. Pilot-operated 3V100/3V200/3V300 series features larger flow capacity and lower coil power consumption, requiring a minimum inlet pressure of 0.15 MPa for stable switching to satisfy high-flow conventional pneumatic loops. Equipped with a thimble-style manual override button for convenient on-site debugging during installation and maintenance, the whole series supports oil-free operation with stable sealing performance. Multiple thread specifications including M5, G1/8, G1/4 and G3/8 are optional, paired with mainstream global AC & DC voltages and two wiring modes of DIN socket and flying leads. It can directly replace traditional 3A air pilot valves and 3L hand pull valves without structural modification, widely deployed in workpiece clamping jacking mechanisms, vacuum adsorption switching, pneumatic interlock protection and inching control of small actuators.