The PU225 series solenoid valve is a pilot operated solenoid valve widely used in industrial fluid control, with the following core functional characteristics:

Structure and Working Principle

This series of solenoid valves adopts a pilot operated (guided) structure, which controls the opening and closing of the pilot hole through electromagnetic force. The main valve diaphragm is driven by the pressure difference of the medium to achieve fluid on/off control

This design enables it to operate stably even under low pressure differentials and has a fast response speed.

Main technical parameters

Applicable media: air, water, light oil (viscosity below 50CST), and steam (specific model)

Work pressure: The operating pressure range for ordinary models is 0.5~10 bar, while high-pressure models (such as PU225H) can withstand higher pressures.

Temperature range: Standard models are suitable for temperatures ranging from -5~80 ℃ (nitrile rubber seal), while steam specific models (such as PU225S) can withstand higher temperatures

Caliber selection: Provides multiple specifications from G3/8 to G2 (corresponding to PU225-03 to PU225-20) to meet different flow requirements

Material and Durability

Valve body material: The mainstream models are made of brass casting, and some models offer stainless steel options (such as PU225S series) to enhance corrosion resistance

Sealing material: Standard nitrile rubber (NBR), optional fluororubber (VITON) or ethylene propylene diene monomer (EPDM), suitable for different media and temperature environments.

Installation and Maintenance

Installation method: Supports inclined or horizontal installation of pipe openings, in compliance with DIN standards

Maintenance convenience: Modular design facilitates disassembly and replacement of seals, reducing maintenance costs

Special model extension

Steam specific type: such as PU225S series, using high-temperature resistant materials and structural design, suitable for steam pipelines

High pressure type: PU225H/X series optimized for high-pressure working conditions, significantly improving pressure bearing capacity