Automatic Filling Valve

Automatic filling valves are engineered components essential for modern fluid and gas handling systems, designed to precisely regulate and control the flow of liquids or gases during filling operations. These valves automatically open, control, and close to dispense a predetermined volume of media into containers, tanks, or systems, ensuring accuracy, repeatability, and waste reduction across processes. Their core function is to enhance operational efficiency, improve safety by preventing overfill, and maintain consistent product quality in applications ranging from water treatment and chemical processing to beverage dispensing and pharmaceutical production.

Product Feature and Application

This integrated automatic filling valve combines multiple functions including filtration, pressure reduction, shut-off, and check. Its large-diaphragm design ensures high sensitivity and reliable actuation, maintaining stable outlet pressure even under fluctuating inlet conditions. The built-in backflow preventer offers critical protection against potable water contamination.

Ideal for closed-loop heating, cooling, and chilled water systems, it is installed on makeup water lines to automatically replenish water and maintain precise system pressure. It prevents reverse flow during supply pressure drops, ensuring operational safety and compliance with health standards in HVAC, industrial circulation, and district energy applications.

Product Parameter (Specification)

Connection Type

Automatic filling valve connection:DN15 (1/2")

Dual PPR Automatic filling valve connection: 25PPR

Technical Specification

① Maximum Inlet Pressure: 16 bar

② Pressure Adjustment Range: 0.2 – 6 bar

③ Factory Preset Pressure: 1.5 bar

④ Filter Mesh: 60 mesh (0.28 mm)

⑤ Applicable Temperature Range: 5 – 70 °C

⑥ Pressure Gauge Connection: G1/4"

Material Composition

① Main Body: HPb59-1 (Leaded Brass)

② Sealing: EPDM (Ethylene Propylene Diene Monomer)

③ Filter Screen: S304 (Stainless Steel 304)

Installation and operation instructions

①installation

This product can be installed either horizontally or vertically in the pipeline, but must not be installed upside down.

The outlet pressure of the valve is at least 0.3 kg higher than the static pressure of the system.

②Pressure Adjustment

Close the upstream valve.

Use a flat-head screwdriver to adjust the regulating screw on the plastic cap: turn clockwise to increase the outlet pressure, and counterclockwise to decrease the outlet pressure. Adjust until the desired outlet pressure is achieved.

Open the upstream valve.

③Application Scenarios