Control Valve

SOLH 7V compact pilot-operated solenoid valve includes complete 5/2 and 5/3 way variants, covering single-coil spring return, double-coil latching and three center functions: center closed, center exhaust, center pressure supply. It adopts integrated internal centralized exhaust runner design with around 30% higher flow capacity than traditional 4V series valves, featuring switching response ≤50ms and maximum operating frequency up to 5 Hz. Ultra-low power coils generate less heat for continuous energization, with DC power consumption 0.7W and AC 1.1VA. A full size lineup from M5 to 3/8" is offered, supporting both standard thread ports and push-in quick fittings. Valves can be installed individually or stacked on multi-station aluminum manifolds to save cabinet space and simplify main air piping. Operating pressure ranges 0.15~0.8 MPa with working temperature -20℃~70℃. Die-cast aluminum valve body delivers long sealing service life, widely used for cylinder directional switching and centralized pneumatic control on all automated production lines.

SOLH SY series pilot-operated 5-port solenoid valve is fully interchangeable with matching SMC valves, including SY3000 mini, SY5000 medium mainstream, SY7000 large and SY9000 extra-large models. It provides complete circuit options: 5/2 single/double coil and 5/3 three-position with center closed, center exhaust & center pressure supply functions. Standard 0.35W coils and optional 0.1W ultra-low power energy-saving coils generate little heat for continuous energization. Internal pilot version works 0.1~0.7 MPa, while external pilot variant supports -100kPa vacuum environment. The gap-sealed spool reaches up to 200 million switching cycles. Air ports are arranged on side, top and bottom for flexible tubing routing. Valves adopt plug-in snap design compatible with SS5Y manifold valve islands, enabling single-valve maintenance without disassembling the whole bank, with IP65 plug connector and IP67 manifold base rating. Optimized internal runners deliver around 80% higher flow than legacy valves, and built-in pilot filter mesh prevents spool stuck by dust. Widely used for cylinder directional switching and centralized pneumatic control in semiconductor, automotive welding, packaging and medical automation equipment.

SOLH 2S series 2/2-way normally closed fluid solenoid valves include two full lines: direct-acting small orifice 030/050 models and pilot-operated large bore 150~500 variants, for automatic on-off control of clean water, compressed air, cutting coolant, lubricating oil and weakly corrosive liquid pipelines. The direct-acting version enables zero-pressure startup without minimum differential pressure limit, features compact size, universal mounting orientation and millisecond fast switching, ideal for low-pressure micro-flow applications such as single-point machine tool cooling, 3C micro air/water branches and mini cleaning equipment. The pilot-operated type requires a minimum 0.05MPa pressure difference for full opening, delivers ultra-large flow with low-wattage low-heat coils, suited for air compressor drain headers, main spray water lines and high-flow circulating water treatment pipelines. Standard NBR nitrile rubber seals are equipped, with optional acid & hot water resistant EPDM food-grade seals. Multi international thread standards (PT/G/NPT) and global universal coil voltages (DC12/24V, AC24/110/220V) are available, supported by DIN plug and wire lead wiring options. Heat-resistant coils allow long-term continuous energization. Selection guide: direct-acting type for pipelines with static pressure below 0.05MPa and small branch flow; pilot-operated version for G1/2 and above main headers with stable high pressure & large circulation flow. EPDM seal is mandatory for hot water and food-grade fluid media.

SOLH 2W series 2/2-way normally closed fluid solenoid valve with solid brass body includes small orifice direct-acting 030/050 models and large bore pilot-operated 150~500 variants, designed for automatic on-off control of clean water, compressed air, cutting coolant, lubricating oil and weakly corrosive fluid pipelines. The direct-acting version realizes zero differential pressure startup with no minimum working pressure limit, features compact size, universal mounting orientation and millisecond high-frequency switching, ideal for low-pressure micro-flow branches, vacuum auxiliary water circuits and single-point cooling for small machine tools. The pilot-operated type requires a minimum 0.05MPa startup differential pressure, delivers ultra-large flow with low-power low-temperature-rise coils, suited for air compressor main drain lines, general assembly main spray water circuits and high-flow circulating pipelines for water treatment systems. Standard NBR nitrile rubber seals are equipped, with optional heat & acid resistant EPDM food-grade seals. Multiple international thread standards (PT/G/NPT) and full-range coil voltages (DC12/24V, AC24/110/220V) are available, supported by DIN plug sockets for cabinet wiring and IP65 waterproof wire leads for humid outdoor equipment. Heat-resistant coils allow 24-hour continuous energization without burnout. Selection guidelines: choose direct-acting type for pipelines with static pressure below 0.05MPa and micro single-point flow; select pilot-operated variant for G1/2 and above main headers with stable high-pressure large circulation. EPDM seal is mandatory for hot water, purified water and food-grade fluid media.

SOLH VHK knob manual valve includes 2/2-way shut-off and 3/2-way pressure relief types, fully interchangeable with original SMC VHK valves. Adopting self-developed precision poppet sealing, flame-retardant PBT housing and copper spool, it is mass-produced automatically with sufficient spot supplies. It features 90° low-torque rotary operation and abundant push-in/thread connectors. The 3/2-way version exhausts residual pressure automatically, widely deployed for safety relief before solenoid valves, vacuum circuit switching and branch air control in compact miniature pneumatic systems.

SOLH 4F pneumatic foot pedal valve adopts integrated die-cast aluminum housing and is fully interchangeable with AirTAC equivalent models. Built on self-developed dual-exhaust sealing technology, it is mass-produced on automated assembly lines with sufficient spot inventory and steady global shipments. Available in self-reset, self-locking and safety guard versions with IP54 dust & splash resistance, it controls reciprocation of double-acting cylinders widely for stamping, riveting fixtures and on-site circuit debugging. High airflow delivers quick response, impact-resistant structure fits heavy-duty frequent stepping in industrial workshops.

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.

SOLH HSV series 3/2-way hand slide pneumatic valves adopt an inline sleeve push-pull integrated structure, fully consistent with the dimensional specifications of mainstream AirTAC HSV series and interchangeable with equivalent domestic counterparts. Designed without return springs and equipped with mechanical self-locking positioning, this valve switches airflow by axial pushing and pulling: pushing the sleeve forward connects the P inlet port and A working port for normal air supply; pulling backward disconnects the air intake and automatically links port A with the built-in R exhaust port to rapidly vent residual pressure inside rear pipelines and actuators. It serves as a dedicated safety shut-off switch for pneumatic branch pipelines and essential pressure relief valve for equipment maintenance work. Three standard ports are configured: P for main compressed air inlet, A for output to downstream pneumatic components, and an embedded built-in R exhaust port hidden inside the valve body. A wealth of specifications covering G1/8 up to G1 thread sizes are supplied, paired with three thread layout options (SF single inner & single outer thread, SS double outer threads, FF double inner threads); PT taper thread, G parallel thread and NPT thread are selectable to fit global piping standards. Constructed with hard-anodized aluminum alloy valve bodies, stainless steel anti-rust spools and high-performance NBR nitrile rubber sealing rings, the valve supports lubrication-free operation under filtered compressed air within 0~1.0 MPa rated working pressure and withstands test pressure up to 1.5 MPa. The operating push-pull force is controlled at 18~25 N for smooth operation, and the mechanical locking structure maintains the set position firmly without drifting or air leakage caused by accidental touching. Different from 4HV rotary hand valves used for forward/backward switching of double-acting cylinders, the HSV series is engineered exclusively for pipeline on-off and pressure release. It can be directly installed in series within air pipelines without extra mounting bases to save installation space. Widely deployed for isolating air supply before equipment overhaul, main air circuit safety cut-off of automation tooling, vacuum pipeline switching and branch circuit independent air source control, it effectively eliminates hidden dangers brought by residual pressure during maintenance and guarantees on-site operational safety.

SOLH M5 series 5/2-way spring return mechanical directional valves adopt unified M5×0.8 fine thread interfaces across the whole product lineup. These coil-free pneumatic valves switch air channels relying purely on external mechanical actuation force and automatically reset by built-in springs once external force is removed. They serve as core miniature pneumatic signal trigger components widely deployed for cylinder stroke limit positioning, in-position feedback signal transmission and local manual pneumatic switching on automated equipment. The complete series covers two major categories: mechanically actuated types (plunger, roller lever, unidirectional roller) and manually operated types (pushbutton, toggle lever, mushroom emergency button, rotary lock button), fully dimensionally interchangeable with mainstream AirTAC M5 series mechanical valves for direct drop-in replacement. The standard five-port layout consists of P main air supply inlet, A/B working ports connected to miniature double-acting cylinders, and two separate side exhaust ports R1/R2 reserved for miniature silencer installation to cut exhaust noise and block external dust ingress. A balanced sliding spool structure is adopted, which is immune to air supply backpressure interference; only light external force is required to complete stable valve switching with ultra-sensitive response. Multiple actuation heads are optional to fit diverse working conditions: M5B straight plunger for rigid contact positioning detection, M5R universal roller lever triggered by cams and baffles, unidirectional roller M5L for single-direction limit anti-misoperation, and various manual button & toggle styles for on-site manual jog control and emergency cut-off. Constructed with hard anodized aluminum valve bodies and wear-resistant NBR nitrile rubber seals, the valves support lubrication-free operation under filtered compressed air within 0.05~0.8 MPa, boasting a service life exceeding 10 million switching cycles. Custom multi-station manifold bases (M5M series) are available for centralized air feeding and modular integrated installation, together with matching adapters, micro silencers and quick connectors. Distinguished from 3/2-way S3 pilot valves, this 5-port M5 series can directly drive small double-acting cylinders or output pilot signals to actuate main solenoid valves. Typical scenarios include assembly fixture in-place detection, cylinder travel automatic reversing, on-site manual debugging and small automation pneumatic logic signal triggering.