Our Products

Triple Offset Metal-Seated Butterfly Valve

The triple offset metal-seated butterfly valve uses a three-fold offset — between the seat axis, the disc rotation axis and the sealing cone — so that the disc fully disengages from the metal seat during opening and closing without friction, and contacts the seat only in the final wedge-in phase of closure. The result is metal-to-metal, friction-free and zero-leakage sealing. Hard metal seating (stainless steel / Stellite weld overlay) provides high-temperature resistance, wear resistance and fire safety, with a wide temperature range that can extend to both cryogenic and high-temperature duties. Sealing is reliable and service life is long; the valve can replace gate and ball valves on large-diameter pipelines in some duties. Design basis: API 609, EN 593.

Knife Gate Valve

Knife gate valves use a thin, blade-shaped gate. On opening and closing, the knife edge cuts through or scrapes off fibres, particles and slurry adhering to the seat, preventing blockage and jamming — making this the dedicated isolation valve for slurry and solids-laden lines. The body bore is full-port and recess-free so media do not accumulate. The seat can be metal hard-seated or a polyurethane/rubber soft seat, selected to suit the duty. Pneumatic actuators are available for fast cycling. Typical services include mineral slurry in mining, pulp and stock in papermaking, sludge in wastewater treatment and chemical slurries.

Bellows-Sealed Globe Valve

The bellows-sealed globe valve places a metal bellows between the stem and the body as the primary seal, completely isolating the medium in the stem movement area from the outside. Together with graphite packing it forms a dual seal that eliminates external leakage at the packing, making it a critical valve for conveying toxic, flammable, volatile and valuable media. The bellows is made of corrosion-resistant materials such as 316L/Inconel and passes helium mass-spectrometer leak testing. Combined with an anti-blowout stem and live-loaded packing, low fugitive emission designs can be supplied to the classification requirements of ISO 15848-1. It is widely used in steam, heat-transfer oil, ammonia, chlorine and hazardous chemical lines.

Flanged Butterfly Valve

The flanged butterfly valve has integral flanges at both ends and is bolted to the pipeline flanges, so no wafer clamping is needed during installation. Sealing is more reliable and the installation requires less coaxiality, which makes the valve suitable for large diameters and important lines. The double-flanged construction has good rigidity and can be fitted with electric or pneumatic actuators for remote control. It is widely used in large-diameter water supply and drainage, circulating water, flue gas and air lines, and is the main valve type for shutoff and regulation in large water systems.

Lug Type Butterfly Valve

The lug type butterfly valve has threaded lugs around the body circumference, and each lug is bolted hole by hole to the pipeline flange, so the downstream pipe can be removed on its own without disturbing the valve mounting. The valve is therefore suitable for pipe ends and makes maintenance on one side of the line easier. The construction is the same as the wafer centreline resilient-seated butterfly valve, with good sealing performance and flexible installation. It is the first choice where a valve must be installed at the end of a line or where the downstream pipe section has to be removed in service, and is widely used for shutoff in water treatment and industrial piping.

Wafer Butterfly Valve

The wafer butterfly valve opens and closes by rotating a disc 90° about its axis. The body is clamped between two pipeline flanges, so it is compact, small and light; it is one of the most widely used valves in water treatment and HVAC systems. The construction is a centreline resilient-seated type: the disc presses tightly on a vulcanised rubber seat to give bubble-tight shutoff. Because a wafer installation has no integral flanges, the valve cannot be used as a pipe end on its own and must be clamped between pipeline flanges. It can be fitted with a lever handle, worm gearbox or pneumatic/electric actuator and suits shutoff and regulation of water and gas at large diameters and low differential pressure.

Solenoid Emergency Shut-Off Valve

The Solenoid Emergency Shut-Off Valve consists of a valve body and a solenoid drive mechanism. Energizing or de-energizing the solenoid drives the valve to close quickly, providing emergency shutdown (ESD) protection for gas lines, oil and gas pipelines and industrial plants. It features fast closing and automatic or manual reset, and can be interlocked with combustible gas detectors, fire alarms or DCS/ESD systems to shut off automatically under leakage or accident conditions. A manual reset mechanism is available to meet the reliability requirements of safety instrumented systems.

Valve Positioner

The Valve Positioner receives a signal from the control system and performs closed-loop correction based on valve position feedback, outputting a pneumatic signal to drive the actuator so that the valve position follows the setpoint precisely and quickly. It is a key accessory for control valve accuracy. The electro-pneumatic positioner accepts a 4–20 mA signal and uses a cam or feedback lever for precise stroke control, with zero and span adjustment, split-range control and characteristic correction. The smart version supports HART communication and self-diagnostics.

Electric Actuator

The Electric Actuator uses a motor-driven gear reduction to deliver output torque or thrust, operating multi-turn or quarter-turn valves on/off or modulating. It requires no air supply, is simple to wire and supports remote control. An integrated control unit supports on-off, modulating and bus types (Modbus/Profibus/HART). Enclosure protection can reach IP67/IP68, with optional explosion-proof Exd IIB/IIC T4. It suits applications without an air supply or requiring precise modulation.

Pneumatic Rack-and-Pinion Actuator

The Pneumatic Rack-and-Pinion Actuator converts the linear motion of the piston into rotary motion through a rack on the piston meshing with a pinion on the output shaft, delivering output torque to drive 90° rotary valves such as ball valves and butterfly valves. Two versions are available: double acting and single acting spring return. Double acting is switched by supplying air in either direction; single acting returns to the safe position (FC or FO) by spring on loss of air supply. The cylinder is anodized or painted for corrosion protection, and the top mounting platform conforms to ISO 5211, allowing solenoid valves, positioners and limit switches to be fitted.

Spring-Loaded Safety Relief Valve

The Spring-Loaded Safety Relief Valve uses spring preload to balance the medium pressure. When the system pressure exceeds the set pressure, the disc is lifted and the medium is discharged to relieve the pressure; the valve recloses automatically once the pressure falls to the reseating pressure. It is the final overpressure protection device for pressure vessels and piping systems. Selection is based on set pressure and discharge capacity. Enclosed or open bonnets, metal or soft seats and a lifting lever for manual discharge and testing are available. The design follows ISO 4126 and API 520/526, and the valve is suitable for overpressure protection of steam, gas and liquid media.

Pilot-Operated Pressure-Reducing Valve

The Pilot-Operated Pressure-Reducing Valve consists of a main valve and a pilot valve. The pilot valve senses the outlet pressure and controls the opening and closing of the main valve, automatically reducing the high inlet pressure to the set outlet pressure and holding it stable. It offers high regulation accuracy, small outlet pressure fluctuation and high flow capacity, and maintains a stable output as flow varies. It is suitable for pressure reduction and stabilization in steam, compressed air, water and oil systems, and is widely used for pressure control in district heating, gas supply and industrial lines.