วาล์วระบายความปลอดภัย 3 เท่า (0.1/07") 4 32

AX742X safety relief valve/holding pressure valve from the main valve and needle valve, pilot valve, ball valve, and to take over the system composition, main body adopts the whole passage, once-through, streamlined design, and USES the diaphragm or piston type two kinds of structure.
Structural features:
AX742X safety relief valve/holding pressure valve from the main valve and needle valve, pilot valve, ball valve, and to take over the system composition, main body adopts the whole passage, once-through, streamlined design, and USES the diaphragm or piston type two kinds of structure. The product utilizes pressure regulating guide valve spring pressure and adjusting needle valve opening to set outlet pressure, and it can stabilize outlet pressure through the feedback of the control system and control room.
Working principle:
When the pipeline from the inlet water supply, water flows through a needle into the main valve control room, outlet pressure through the catheter to the pilot valve, when the outlet pressure is higher than the pilot valve set data, pilot valve closed, the control room to stop drainage, at this time the main valve to control the indoor pressure and close the main valve, outlet pressure is no longer increases.
When the outlet pressure is reduced to the guide valve setting pressure, the guide valve opens and the control room drains downstream. As the displacement of the pilot valve is greater than the inlet water of the needle valve, the pressure of the main valve control room drops, and the inlet pressure opens the main valve. Under stable condition, the control room has the same amount of water and drainage. Adjust the guide valve spring to set the outlet pressure.
Work features:
1. The pressure control is stable and reliable. Guide valve, main valve continuous work, downstream pressure change continuous, steady, affected by the import pressure is small.
2. Convenient operation. When the pressure of work is adjusted, the main valve automatically adjusts when upstream pressure or flow changes, stabilizing the downstream pressure.
3. The valve body adopts full channel, straight flow and streamline design. Small hydraulic loss, good energy saving effect.



Our company introduction:
Shanghai Qingjiang Valve Manufacturing Co, . Ltd. Is located in Shanghai Fengxian Industrial Zone, is a commitment to scientific research, production, sales of professional valve manufacturer. 
Company to an international metropolis -- Shanghai as the basis, make full use of regional advantages and industry, is committed to the introduction of international advanced management experience and technological innovation, and actively promote the enterprise comprehensive strength, and expand market share, formed with the gate valve, globe valve, ball valve, check valve, butterfly valve, hydraulic control valve, balance valve, relief valve, regulating valve and so on more than 60 series nearly 1000 varieties of products structure. Products nominal diameter is 1/4"-80" (DN6-2600mm) pressure 0.1MPa - 32.0MPa, temperature -196-595º C. Valve of the main materials are cast iron, ductile iron, carbon steel, alloy steel, stainless steel, copper and other materials, and according to the special needs of customers and manufacture of metal products. Widely used in construction, municipal, water supply and drainage, HVAC, fire, electricity, metallurgical, petrochemical, gas and other industries, and exported to the Middle East. Europe and the United States and Southeast Asia and other countries and regions. High quality wins the customer the consistent high praise and trust.