Control Valve

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.

Developed with optimized poppet‑sealing technology, SOLH VG342 pilot‑operated poppet solenoid valve is mass‑produced in‑house with sufficient stock. Serving global automation end‑users, this high‑flow vacuum compatible solenoid valve supports NC/NO/external‑pilot conversion. It delivers large‑capacity airflow, 1.8W low‑power option and 5Hz high‑frequency cycling. Oil‑free and zero‑leakage, it acts as reliable manifold main control valves for vacuum holding systems, large‑bore actuators and multi‑loop pneumatic automation lines.

SOLH VEX1 balanced poppet 3-way relief pressure regulator adopts poppet structure instead of traditional diaphragm design, delivering 3~5 times higher flow than standard AR regulators with oversized relief port for fast pressure relief and stable back pressure. It achieves superior regulation precision with hysteresis ≤0.03MPa, repeatability & sensitivity ≤0.01MPa. Two control modes are available: remote air pilot and integrated solenoid pilot for automatic multi-stage pressure switching. Max inlet pressure reaches 1.0MPa, with port sizes ranging from 1/8" to 2". Mountable at any angle and lubrication-free for dry oil-free air circuits; air pilot version works 0~60℃ while solenoid pilot variant ranges 0~50℃. Widely used for large air tank pressure stabilization & rapid relief, high-flow air blowing, large bore cylinder / air motor driving and multi-stage tension control systems for film & wire manufacturing.

SOLH SCV series dedicated air-operated coating valves include 2-way SCV12 and 3-way SCV13 for paint, thinner and purge air switching & fast color change control. Wetted parts adopt composite PTFE+FPM solvent-resistant seals, and isolation diaphragm separates driving mechanism from coating liquid to avoid paint adhesion, achieving service life over 5 million cycles. Fully pneumatic structure without electric parts eliminates spark risks for explosion-proof coating workshops. Matched manifold base supports centralized control of up to 15 colors; optimized internal flow channel cuts thinner consumption during flushing and prevents cross-color contamination. Available for single standalone mounting or dense manifold stacking, widely applied in auto, furniture, hardware & home appliance automatic coating color change systems, solvent circulation cleaning and spray gun purge air circuits.

SOLH VEX1133 high-flow precision relief regulator adopts combined nozzle-flapper pilot and balanced poppet structure. Compact in size yet with strong supply & exhaust capacity, it realizes ultra-fast pressure stabilization with negligible overshoot under sudden load changes and large downstream volume. It delivers ultra-high control precision with sensitivity ≤0.2% FS and repeatability ≤±0.5% FS, fully meeting micron-level positioning and constant force/tension process standards. Built-in overflow relief automatically discharges excess pressure inside closed air chambers to maintain stable set pressure without drift. Featuring friction-free internal components, lubrication-free and anti-contamination design, it allows arbitrary-angle mounting and supports standalone or manifold stacked assembly. Widely applied to film & wire tension control, pneumatic balancers, precision press-fit machinery and laboratory test bench constant pressure systems.

SOLH VH series 4-way 90° manual rotary hand valve switches air circuits by rotating handle, with three optional center functions: 3-position center closed, 3-position center exhaust and 2-position type. Adopting precision rotary spool seal for ultra-low internal leakage, it features zinc alloy / die-cast aluminum body and lubrication-free long service life, with built-in mechanical position lock to avoid accidental operation. It supports side port and bottom port piping layout, available for panel flush mounting or direct body fixing, with port sizes from Rc1/4" to 1" and max operating pressure 0.7~1.0MPa. Center closed version keeps cylinder clamping pressure during shutdown, while center exhaust fully releases pressure for safe maintenance. Widely used for manual cylinder reversing, equipment commissioning venting, emergency air source isolation, semi-automatic machine manual operation and pneumatic teaching test benches.

SOLH VM1 (VM100) miniature 2/3 port mechanical poppet valve is fully interchangeable with equivalent SMC models. Adopting compact reliable poppet sealing structure, it features ultra-narrow 11mm width and only 60g weight for easy embedded & dense stacking installation inside machinery. Operating pressure ranges from -100kPa vacuum to 1.0MPa positive pressure, with lubrication-free design, excellent tightness and strong dust resistance. Multiple thread options including M5, Rc1/8, NPT1/8 & G1/8 are available, supporting side port and bottom port piping layout. A full series of interchangeable actuator heads are offered: standard/short plunger, straight/short/one-way anti-rebound roller lever, flat pushbutton, yellow mushroom emergency stop, green indicator button, hinge lever and lockable rotary knob, with complete NC/NO 2-port & 3-port variants. Widely applied for cylinder stroke limit detection, manual jog commissioning, safety emergency interlock, mini jig fixture air switching and vacuum trigger circuits, it acts as universal mechanical air signal trigger for compact automation equipment.

SOLH VM2 (VM200) medium mechanical poppet valve is fully interchangeable with matching SMC models. Featuring medium poppet construction with Cv=0.87 flow coefficient, its flow capacity is around 8 times higher than mini VM1 series, equipped with standard Rc1/4 port and optional NPT/G1/4 threads. It works under 0~1.0MPa and is incompatible with vacuum, adopting lubrication-free wear-resistant poppet seal and robust metal body. Side port and bottom port piping layouts are available, supported by a complete lineup of interchangeable actuators: standard POM roller / hardened steel abrasion-resistant roller lever, one-way anti-rebound roller, straight plunger, flat pushbutton, yellow mushroom emergency stop head, green indicator button and lockable hinge knob. The hardened steel roller variant fits heavy-duty high-wear production lines. Widely used for cylinder & slide table stroke limit detection, equipment manual jog commissioning, jig fixture air switching and safety emergency interlock, it serves as the mainstream mechanical air trigger valve for packaging, textile, printing and general automation production lines.