Differential Pressure Control Valve

Engineered for precision and durability, GenTant valves are easy to integrate, making them the preferred choice for engineers and project managers worldwide. We are committed to providing exceptional service and customized solutions, offering high-quality products at reasonable prices for wholesalers. We invite you to request technical documentation, explore our diverse product range, and consult with our team to meet your project needs. Partner with GenTant to enhance your system's performance and longevity.

Product Feature and Application

The Differential Pressure Control Valve is designed for closed-loop hydronic systems to automatically maintain a constant differential pressure between supply and return lines. By responding proportionally to flow variations, it stabilizes system pressure, prevents excessive flow velocity, and effectively eliminates pipe noise. The valve works in combination with a static balancing valve via copper impulse tubes, ensuring precise flow regulation and pressure balance. Its robust construction with PN16 pressure rating guarantees long-term reliability. The valve supports flexible installation orientations, offers set-point memory, and allows partial isolation without disturbing other system components, ensuring energy efficiency and improved thermal comfort.

Differential Pressure Control Valves are widely used in variable flow HVAC systems such as chilled water and hot water circulation networks. They are ideal for applications involving thermostatic control valves, fan coil units, and terminal branches where frequent flow changes occur. By maintaining stable differential pressure across branches, the valve enhances system stability, reduces commissioning time, and ensures quiet, efficient operation in commercial buildings, residential complexes, hospitals, and industrial facilities.

Its primary use cases include:

District Heating and Riser Systems: Used to stabilize pressure across different zones or vertical risers in large-scale buildings, preventing flow fluctuations caused by the opening or closing of other branches.

Condensing Boiler Systems: Protects the boiler by maintaining the necessary pressure conditions to optimize condensing efficiency and ensure a stable flow rate through the heat exchanger.

Combined Heat and Power (CHP) Systems: Regulates the pressure between the supply and return lines to ensure the cogeneration unit operates within its optimal hydraulic parameters, preventing overflow or insufficient pressure.

Product Parameter (Specification)

Temperature Range: -5 to 110°C

Maximum Working Pressure: 16 bar

Maximum Differential Pressure: 2 bar

Maximum Differential Pressure across Diaphragm: 6 bar

Setting Range: 5–30 kPa (50–300 mbar)

Accuracy: ±15%

Copper Impulse Tube: 1/8" × 1/8" × 1m (with 1/4" adapter/bushing)

Threaded connection type

DN15(1/2＂)，DN20(3/4＂)，DN25(1＂)

Product dimension

Operation guidelines

Valve Closing Operation

Using a 3mm Allen key (hex wrench), insert it into the hex socket at the center of the handwheel. Turn it clockwise to move the internal valve plug and close the flow channel.

Differential Pressure Adjustment Operation

Turn the adjustment handwheel by hand to move the internal setting cap up or down. Align the cap with the desired scale value on the handwheel; the scale values are calibrated in mbar.