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ZSE30A(F) / ISE30A High Precision Dual-Color Digital Pressure Switch

SOLH ZSE30A / ZSE30AF / ISE30A high precision digital pressure switches are fully interchangeable with matching SMC models, boasting ultra-high measurement accuracy of ±0.2%FS with 4-digit dual-color red/green LCD. Green backlight activates when pressure stays within preset safe range, red light triggers for overpressure/underpressure alarm; display logic can be reversed as needed. Three measuring ranges cover full application demands: ZSE30A for single vacuum 0~-101kPa, ZSE30AF universal compound pressure -100~+100kPa, ISE30A standard positive pressure -0.1~1.0MPa for mainstream 0.4~0.7MPa factory air supply. Each unit comes with 2-channel independent NPN/PNP open collector switch outputs, with optional 1~5V analog voltage or 4~20mA analog current signals for continuous closed-loop PLC pressure data acquisition. Exclusive one-click parameter copy function transfers settings from one master unit to up to 10 slave units, drastically cutting batch commissioning errors. Powered by wide-range DC12~24V, fitted with M5/Rc1/8 port and IP40 dustproof rating. Widely deployed for cylinder clamping pressure monitoring, vacuum chuck adsorption failure alarm and real-time pressure supervision across all automated pneumatic circuits, outperforming traditional mechanical pressure switches in precision, remote visibility and signal expandability.

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IS3000 Series Pneumatic Pressure Switch

SOLH IS3000 piston-type mechanical pneumatic pressure switch is fully interchangeable with equivalent SMC models. Air pressure pushes the built-in piston to actuate a 1NO+1NC micro contact switch, with adjustable pressure range 0.1~0.7MPa, hysteresis ≤0.05MPa and repeatability ±0.05MPa. Die-cast aluminum housing reaches IP40 dustproof grade, equipped with top adjustment knob and graduated window for offline pressure setting without power supply. Standard port Rc1/4, optional NPT1/4 thread, IS3100 gasket mounting version and IS3010 micro-load variant dedicated for PLC, as well as indicator light optional model. Its solid piston mechanical structure delivers outstanding shock and vibration resistance, stable on vibratory feeders, knocking hammers and stamping machines without signal drift or false triggering common to digital electronic switches. Max contact load 1A allows direct driving of miniature solenoid valves or connection to PLC digital inputs, widely applied for main air source low-pressure protection, cylinder clamping position confirmation and pneumatic safety interlock for vibration equipment. It provides higher electrical load capacity than IS10 reed switches and better cost performance & vibration stability than ISE30A digital pressure switches.

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IS10 Series Reed Tube Mechanical Pressure Switch

SOLH IS10 non-contact reed tube pneumatic pressure switch is fully interchangeable with matching SMC air service unit accessories. It operates via air pressure driving a magnet-equipped piston to trigger the reed tube magnetically, featuring zero mechanical contact abrasion and no electric sparks, with far longer service life than IS3000 piston micro-contact switches. The adjustable pressure range covers 0.1~0.6 MPa and hysteresis is controlled under 0.08 MPa. A side graduated viewing window allows offline pressure calibration with a screwdriver without power supply. Two mounting types are available: IS10-01S with R1/8 inline thread, and clip-on IS10M which fastens directly onto AC FRL manifolds to save cabinet space. Rated contact load reaches 1A for AC/DC 100V, capable of directly driving miniature solenoid valves or connecting to PLC digital inputs. Miniature and lightweight, it serves as a cost-standard pressure monitor for main air low-pressure alarm, cylinder full-stroke confirmation and safety interlock of vibrator pneumatic circuits.

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MQR Series Low Torque Gap Seal Rotary Union

SOLH MQR multi-channel rotary union adopts metal non-contact gap sealing with ultra-low rotating torque of 0.003~0.50 N·m. Free of rubber sealing rings, it avoids sticking even after long static storage. Available with 1/2/4/8/12/16 independent air passages without cross-leakage, it works under -100kPa vacuum to 1.0MPa positive pressure. Supported by double bearings, it reaches max 3000 rpm bidirectional rotation with up to 1 billion maintenance-free rotations. Equipped with standard M5 thread ports and lubrication-free structure, it eliminates pipeline twisting for robot joints, rotary indexing tables and rotary cylinders, widely applied in rotary jig vacuum adsorption and continuous air supply for electronics, packaging & printing rotating automation machinery. The stationary housing should be fixed and the rotating side matched with flexible coupling; heavy radial and axial loads are prohibited.

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PB1011 Process Pump

SOLH PB1011A miniature diaphragm pump is fully interchangeable with equivalent SMC PB1011 models. The integrated built-in DC24V 3-port solenoid valve enables direct electric control, while PB1013A air pilot variant is designed for external equipment interlock. Shaftless-seal construction eliminates medium leakage entirely. Wetted components are optional PP polypropylene or SUS316 stainless steel, paired with composite PTFE diaphragms and FKM seals for excellent resistance to weak acid, alkali and organic solvents. It delivers adjustable flow from 8 to 2000 mL/min, handles liquid viscosity up to 100 mPa·s with maximum 2.5 m dry suction lift, operates below 64 dB(A) noise and achieves 30 million cycle diaphragm service life. Fluid ports adopt standard Rc1/8 thread with optional NPT1/8; air supply & exhaust ports use M5 miniature threads. Installation requires liquid outlet facing upward to avoid air lock. Widely used for micro chemical liquid transfer in semiconductor & PV lines, medical biochemical reagent feeding, printing ink & glue supply, and precise chemical dosing for environmental water treatment equipment.

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VR3200 / VR3201 Series Pneumatic-Electric Relay

SOLH VR3200/VR3201 power-free mechanical pneumatic-electric relay is fully interchangeable with matching SMC models. It converts air pressure signals into 1NO+1NC dry contact signals without external power supply for PLC interlock, pressure monitoring and fault alarm, with adjustable trigger pressure ranging from 0.1 to 1.0MPa and high-load built-in micro switch. Three variants are available: open-frame VR3200 for dry dust-free control cabinets; fully sealed IP44 drip-proof VR3201 for humid & dusty machine tools and production lines; CE-certified VR3202 with dedicated grounding terminal for strong EMC interference and export machinery. Equipped with standard Rc1/8 air inlet, brass valve body, POM piston, stainless steel return spring and NBR seal, it is widely used for cylinder clamping pressure confirmation, vacuum chuck negative pressure feedback, main air source low-pressure warning and signal conversion in explosion-prone workshops without electronic sensors.

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AN Series Pneumatic Silencer

SOLH AN series pneumatic exhaust silencer is fully interchangeable with equivalent SMC mufflers, covering a complete size range from M5 micro thread to Rc2" large bore, available in flame-retardant sintered resin and high-temperature sintered copper metal versions. It achieves 25~35dB(A) noise reduction. The double-layer composite structure effectively suppresses high-speed exhaust impact noise from solenoid valves and cylinders, blocks oil mist splashing, and maintains low exhaust back pressure without slowing down actuators. The resin variant operates from -10 to 60℃ with UL94-V0 flame retardant housing, while sintered metal type withstands up to 150℃ for frequent high-temperature exhaust environments. The full lineup suits solenoid valves, cylinders and centralized exhaust headers, classified into micro, medium and industrial large-bore models by airflow capacity, with metric, Rc, NPT and push-in connection options. Clogged silencer cores can be cleaned by reverse air blowing, serving as essential noise reduction environmental accessories for all pneumatic circuits.

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G Series Pneumatic Pressure Gauge

SOLH G series pneumatic pressure gauges are dedicated to compressed air measurement, split into rear-thread G type for panel embedding and side-thread GA type for inline pipe mounting. Dial sizes range from φ15 to φ63 with measuring spans of 0.2~1.5MPa. Standard accuracy is ±3% FS, while mini G15 and G27 reach ±5% FS. L variants equipped with red-green limit rings enable intuitive visual pressure state identification; large dial G53-L and G63-L guarantee clear readings from long distances. Connection threads include M5, R1/16, R1/8 and R1/4. Standard brass fittings are supplied, and copper-free oil-free clean versions are optional for semiconductor high-purity gas circuits. The gauge adopts zinc alloy / nickel-plated aluminum housing and impact-resistant polycarbonate window. Widely matched with solenoid valves, regulators and automation equipment for real-time air pressure monitoring, all sizes are fully interchangeable with imported equivalent pressure gauges.

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