Imported self-operated pressure regulating valve | Imported self-operated regulating valve | Imported pressure regulating valve

公称通径：

DN15～250mm

公称压力：

PN1.6、2.5、4.0、6.4MPa

连接形式：

法兰、焊接、螺纹

Imported self-operated pressure regulating valve
Overview of imported pressure regulating valve
Self-operated regulating valves all use the feedback signal pressure from the valve output end to be transmitted to the actuator through the signal pipe to drive the disc to change the valve and introduce execution The mechanism controls the position of the valve core, changes the pressure difference and flow rate at both ends, and stabilizes the pressure in front of or behind the valve. With the advantages of sensitive action, good sealing, and small pressure set point fluctuation force, the self-operated pressure control valve is widely used in the automatic control of gas, liquid and steam media for pressure reduction and pressure stabilization or pressure relief and pressure stabilization. The product structure of the pressure regulating valve is self-operated. Type pressure control valve has three structures: single-seat, sleeve and double-seat. The actuator has diaphragm type and piston type. There are two action types: type B for pressure regulation after the valve for pressure reduction and pressure regulation type before the valve for pressure relief. The nominal pressure level of the product has a valve body diameter range, and the leakage level has three-level and three-level flow characteristics for quick-opening pressure step-by-step adjustment.
Features of imported self-operated pressure regulator
The self-operated pressure regulator does not require external energy and can work in places without electricity or gas. It is both convenient and energy-saving. The pressure segment range is thin and crosses each other, and the adjustment accuracy is high. The pressure setpoint can be set continuously during operation. For post-valve pressure adjustment, the ratio of the pre-valve pressure to the post-valve pressure can be ~. Rubber diaphragm type detection, the actuator has high measurement accuracy and sensitive action. The pressure balance mechanism is adopted to make the control valve responsive and control precise.
Technical parameters of imported self-operated pressure regulating valve
Valve body style, small straight-through cast ball valve
Nominal diameter ~
Nominal pressure
Special flange standards can be pressed Provided by the user
Connection type flange welding B thread is suitable for
Valve cover type standard type~
Gland type bolt compression type
Self-operated regulating valve
Sealing Packing type PTFE packing Impregnated PTFE asbestos packing Asbestos textile packing Graphite packing
Valve core form Single seat sleeve type valve core
Linear flow characteristics
Effective area※
Pressure setting range ~ ~ ~ ~ ~ ~ ~ ~
Minimum pressure difference to ensure normal operation of the pressure valve △
Maximum pressure difference allowed between the upper and lower membrane chambers
Material film cover steel plate galvanized film Sheets or fiber clips
Control pipeline joints Copper or steel pipe ferrule joints/
Note ※ The pressure setting range corresponding to this effective area is not applicable.
Installation of imported self-operated pressure regulating valve
When the valve is used in gas or low-viscosity liquid media, the self-operated pressure regulating valve is installed upright on the horizontal pipe. When the location space does not allow, it is installed upside down or Mounted diagonally.
When the medium is clean gas or liquid, the filter in front of the valve does not need to be installed. If it is not a clean medium, a filter must be installed in front of the valve.
When the diameter of the pressure regulating valve is too large, there should be a fixed bracket. When it is confirmed that the medium is clean, the bracket does not need to be installed.
After the valve group, the user can choose a check valve, safety valve, etc. according to needs.
When the self-operated regulating valve is used in steam or high-viscosity liquid media, the usual self-operated pressure regulating valve is installed upside down on the horizontal pipe. The self-operated condenser steam should be higher than the actuator of the pressure regulating valve. Below the valve are the front and rear takeovers. The condenser should be filled with cold water before use, and then filled with water about once a month.