Electric pressure differential two-way valveThe role of control:

This system is suitable for pressure differential bypass control of chilled water/hot water systems in central air conditioning.
The main function of differential pressure bypass is to maintain the normal operation of equipment such as chillers/heat exchangers in the chilled water/hot water system under low end load conditions.

Product features:

★ The actuator uses a cast aluminum bracket and plastic shell, which is small in size and light in weight

★ Choose permanent magnet synchronous motor with hysteresis clutch mechanism, which has reliable self-protection function

★ - Suitable for various control signals: incremental (floating point), voltage (0-10V), current (4-20mA)

★ - Equipped with 0-10V or 4-20mA feedback signal (optional)

The transmission gear adopts metal gears, greatly improving the service life of the driver

★ Low power consumption, high output power, and low noise

Electric pressure differential two-way valveworking principle:　　

The differential pressure controller DPC-1 detects the pressure difference between the supply/return main pipe, compares it with the set value, and controls the opening of the electric two-way valve to achieve bypass between the supply and return water, in order to maintain the required pressure difference.
When the pressure difference increases, the red contact is connected to the yellow contact. When the pressure decreases, the red contact is connected to the blue contact, and the red contact can stay in the middle position without electrical connection to other contacts.

installation wizard:

In Figure A The differential pressure controller detects the pressure difference of the supply/return water main, so the control is accurate.
In Figure B The pressure difference controller detects the pressure difference at both ends of the bypass valve of the supply/return water main pipe, and only detects the partial pressure difference of the supply/return water, so the control is inaccurate.