HVAC System Use Stainless Steel Pressure Differential Bypass Balance Control Valve

Product introduction:
The 800X serie differential pressure bypass balance valve consists of a main valve, differential pressure control pilot valve, needle valve, ball valve, micro filter, and pressure gauge to form a hydraulic control connecting system. Through a specially designed pilot valve control room, the pressure change signal is compared, and the main valve opening signal is output to control the main valve opening, thereby controlling the inlet and outlet pressure difference of the main valve at the set value.

The working principle is that when the pressure difference between the inlet and outlet of the main valve changes, the pressure difference between connecting pipe A and connecting pipe B changes, which changes the opening of the pilot valve. When the pressure difference is large, the opening of the pilot valve is large, and the amount of water discharged through pipe C in the control room increases. The pressure in the control room of the main valve decreases, and the opening of the main valve increases. The pressure difference between the inlet and outlet of the main valve decreases. On the contrary, if the pressure difference between the inlet and outlet of the main valve decreases, the opening of the pilot valve decreases, and the pressure in the control room of the main valve increases, pushing the opening of the main valve to decrease and causing the pressure difference of the main valve to increase. This negative feedback effect stabilizes the pressure difference between the inlet and outlet of the main valve at the set value. The opening of the needle valve and the pressure of the guide valve spring can be used to set the pressure difference between the inlet and outlet of the main valve.

This product utilizes hydraulic self control and does not require other devices or energy sources. It is easy to maintain and is widely used in water supply network systems such as high-rise buildings and residential areas, as well as urban water supply projects.

Product technical parameter:

Product features:
1. The valve body adopts the whole passage, streamlined design, small fluid resistance, large flow.
2. Dual sealing between valve body, bonnet, piston cylinder connection by sealing gasket and the sealing ring sealing, ensure no leakage.
3. The valve body, a piston cylinder, piston double orientation, movement is stable and reliable.
4. The entire stainless steel piston cylinder, the whole cast pistons, NBR sealing ring, a perfect combination of prolonging the service life greatly.