V230Y21/22 self-operated micro-pressure regulating valve is an energy-saving control valve that realizes precise automatic adjustment of extremely small pressures by utilizing the energy of the regulated medium itself without external energy sources. The core of the valve is equipped with a large-area pressure-sensing actuator. Through a pressure-tapping pipe, the weak upstream or downstream pressure signal is introduced into the pressure-sensing diaphragm chamber. This allows the medium pressure to generate a sensitive thrust on the huge diaphragm and form a sensitive dynamic force balance with the high-precision preset spring force. The actuator drives the valve stem in precise displacement according to pressure deviations on the millibar (mbar) scale, changing the flow area between the valve plug and seat to achieve accurate compensation of fluid pressure. It is divided into the nitrogen-supply reducing type (Y21, normally open) for controlling downstream pressure and the nitrogen-venting relief type (Y22, normally closed) for controlling upstream pressure. It typically adopts a soft-seal structure design to ensure bubble-tight sealing integrity and extremely high adjustment sensitivity under ultra-low pressure conditions. V230Y21/22 series micro-pressure regulating valves feature high sensitivity, excellent low-pressure stabilization performance, simple structure, and intrinsic explosion-proof safety. They are widely used in petrochemical tank blanketing systems, industrial kiln gas ratio control, and various precision gas-phase micro-pressure balance systems in the semiconductor and pharmaceutical fields.Product Image of V230Y21/22 Self-operated Micro-pressure Regulating Valve

V230W01/02 self-operated temperature regulating valve is an energy-saving control valve that realizes automatic temperature control by directly utilizing the energy of the regulated medium itself without external energy sources (such as electricity or compressed air). The valve mainly consists of a temperature sensor (bulb), an actuator, a regulating valve body, and a capillary tube. It operates based on the physical principle of thermal expansion of the sensing liquid filled in the bulb. The temperature sensor converts detected temperature changes into pressure signals, which are transmitted through the capillary tube to the actuator to drive the valve stem displacement. This changes the flow area between the valve plug and seat, achieving precise regulation of the flow of heating media (such as steam or hot water) or cooling media. This series of valves is generally divided into two types: heating type (valve closes as temperature rises) and cooling type (valve opens as temperature rises), namely models V230W01 and V230W02. The valve body often adopts a pressure-balanced design to effectively offset unbalanced forces before and after the valve, maintaining high adjustment accuracy and stability even under fluctuating pressure conditions. During the control process, the system automatically performs dynamic feedback compensation according to the set temperature value to stabilize the target temperature within a determined range. V230W01/02 self-operated temperature regulating valve features a wide temperature control range, sensitive response, explosion-proof safety, and energy saving. It is widely used in fluid temperature automatic control systems in HVAC, water heating, heat exchange stations, as well as petroleum, chemical, and textile industries.Product Image of V230W01/02 Self-operated Temperature Regulating Valve

V230Y01/02 (B, K) self-operated pressure regulating valve is an energy-saving control valve that realizes automatic pipeline pressure stabilization or relief by utilizing the energy of the regulated medium itself to balance with the spring force in the actuator, requiring no external energy sources. The valve operates on a self-feedback regulation principle, where the upstream or downstream pressure is introduced into the pressure-sensing diaphragm chamber of the actuator through a pressure-tapping pipe. The thrust generated by the medium pressure acts directly on the diaphragm and forms a dynamic force balance with the preset spring tension. The actuator drives the valve stem in a reciprocating motion according to changes in pressure deviation, real-time changing the flow area between the valve plug and seat to precisely control the fluid pressure drop. It is divided into the pressure reducing and stabilizing type (K-type, normally open) for controlling downstream pressure and the relief and back-pressure type (B-type, normally closed) for controlling upstream pressure. The sealing pair can adopt soft sealing or high-precision hard sealing technology to ensure excellent sealing integrity and adjustment accuracy under different temperature and pressure conditions. V230Y series self-operated pressure regulating valves feature simple structure, rapid response, wide setting range, and intrinsic explosion-proof safety. They are widely used for automatic constant pressure control of water, gas, steam, and oil media in petroleum, chemical, power, water supply and drainage, and urban heating systems.Structural Drawing of V230Y01/02 (B, K) Self-operated Pressure Regulating Valve

V230Y11/12 self-operated differential (micro) pressure regulating valve is an energy-saving control valve that realizes automatic and precise adjustment of the pressure difference between two points in a pipeline by utilizing the energy of the regulated medium itself, requiring no external energy sources. The valve core is equipped with a high-performance dual-sensing actuator. Through two pressure-tapping pipes at the high-pressure and low-pressure ends, the differential pressure signal is simultaneously introduced into the pressure-sensing diaphragm chamber. This allows the medium pressure differential to generate precise thrust on the sensitive diaphragm, forming a dynamic force balance with the preset spring tension. The actuator drives the valve stem in a linear displacement according to minute fluctuations in the differential pressure, real-time changing the flow area between the valve plug and seat to achieve precise compensation and constant control of the system differential pressure. It is divided into the relief-bypass type (Y11, normally closed) where the valve opens as the differential pressure rises, and the pressure-stabilizing control type (Y12, normally open) where the valve closes as the differential pressure rises. The sealing pair can adopt soft sealing or hard sealing technology based on specific conditions, ensuring excellent adjustment accuracy and shut-off integrity under various pressure gradients. V230Y11/12 series differential pressure regulating valves feature compact structure, rapid response, wide differential pressure setting range, and intrinsic explosion-proof safety. They are widely used in central air-conditioning supply and return water balance systems, industrial pump group bypass protection, filter differential pressure monitoring, and various precision differential pressure balance and flow control systems in petroleum and chemical processes.Product Image of V230Y11-12 Self-operated Differential (Micro) Pressure Regulating Valve

The UM41 manual regulating valve is an industrial control valve that relies on the manual rotation of a handwheel to adjust the clearance between the plug and seat, thereby achieving precise regulation of flow and pressure in a pipeline. Typically utilizing a straight-through or angle structure, the valve features a hydrodynamically designed regulating plug. As the handwheel turns, the stem moves linearly to continuously vary the flow area. Operating without external energy (electricity or air), the UM41 is ideal for local manual control of flow proportioning and system pressure balancing where frequent automated adjustment is not required. This series is widely used in water supply, steam, and oil pipelines across petroleum, chemical, power, and metallurgical industries.Product Image: UM41 Manual Regulating Valve

The ZT self-operated electronically controlled temperature regulating valve is an automated fluid control unit integrating a high-precision Pt100 temperature sensor, an intelligent electronic controller, and an electric actuator. The valve eliminates the need for external DCS or PLC systems; it monitors the controlled medium's temperature via its own sensor and feeds data to the microprocessor inside the intelligent actuator. The actuator performs PID calculations based on the preset temperature and drives the valve stem for linear displacement, accurately regulating the flow of heating media (steam, hot water) or cooling media. Available in heating (closes on temperature rise) and cooling (opens on temperature rise) types, this series is widely used in heat exchange stations, domestic hot water systems, food processing, pharmaceuticals, and various heat exchangers in chemical processes.Product Image of ZT Self-operated Electric Temperature Control Valve

The ZL self-operated flow control valve is an energy-saving device that utilizes the energy of the regulated medium itself to maintain a constant flow rate without the need for external power. The valve primarily consists of a regulating body, an actuator, and an orifice plate with preset resistance. Its operating principle involves a built-in pressure compensation mechanism that senses the differential pressure across the orifice in real-time. By automatically adjusting the plug opening to maintain a dynamic balance between the medium pressure and spring force, it ensures the output flow remains at the set value despite fluctuations in network pressure. The ZL series is widely used in district heating, central air conditioning chilled/hot water systems, and industrial circulating water systems as key equipment for resolving hydraulic imbalance and improving energy efficiency.Product Image of ZL Self-operated Flow Control Valve