Year1
- 材质：
- 铸铁
- 型号：
- ZYF
- 规格：
- DN15-DN350
Product description of self-operated differential pressure control valve:
Self-operated differential pressure control valve, also known as differential pressure balancing valve, differential pressure regulating valve, differential pressure valve.
This type of self-operated differential pressure control valve does not require external energy. It relies on the pressure change of the medium to be adjusted for automatic adjustment. It automatically eliminates the residual pressure head of the pipe network and the flow changes caused by pressure fluctuations, and maintains a constant user inlet and outlet pressure difference. , helps to stabilize system operation.
The self-operated differential pressure control valve is particularly suitable for household metering or automatic control systems.
Performance characteristics of the self-operated differential pressure control valve:
The valve has a double-flap structure, a small unbalanced force on the valve stem, and a compact structure. It is used in heating (air conditioning) water series and is a constantly controlled system. pressure difference, and has the following characteristics:
, constant pressure difference of the controlled system
, support internal independent adjustment of the controlled system
, absorb fluctuations in the pressure difference of the external network
, adopt The advanced stepless pressure regulating structure can control the pressure difference with an adjustable ratio of up to:
. It has the function of automatically eliminating blockage
. The flange size complies with B. medium gray cast iron flange size.
How to use the self-operated differential pressure control valve:
The direction of medium flow should be consistent with the direction of the arrow on the valve body
The self-operated differential pressure control valve should be installed on the return pipe, and the valve should be connected The other end of the pressure guide pipe is connected to the water supply pipe. It is recommended to install a ball valve on the water supply end of the pressure guide pipe to start the clogging elimination function
. A filter should be installed on the water supply pipe in front of the pressure guide pipe. , to avoid the valve losing its automatic adjustment function due to poor water quality
. Pressure gauges should be installed on the water supply pipe and the return pipe in front of the valve to facilitate adjustment and control of the pressure difference
. If the flow of the system is found to be too large or too small. The possible reason is that debris stuck on the valve plug during the installation of pipeline components. You can close the /& ball valve for 1 minute. At this time, if the blockage is minor, it will be automatically eliminated. If it cannot be eliminated, then Disassemble the valve, check to eliminate blockages and control the pressure difference. Adjustment method: adjust the pressure regulating valve stem counterclockwise and observe the pressure difference.
Materials and lifespan of self-operated differential pressure control valve:
Valve body & high quality gray cast iron
Internal parts & brass, stainless steel
Spring & stainless steel
Diaphragm& EPDM
Life span & more than ten years
Technical parameters of self-operated differential pressure control valve:
, nominal pressure:.
, medium temperature: ℃
, Working pressure difference range:..
, Control pressure difference setting value:. Control pressure difference adjustable range..
, Pressure guiding pipe length:.
, Pressure guiding pipe connection end size ：/&Pipe thread
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