Priority valve DH300, DN65 DH300-65A

Priority valve for pressure control in installations

The DH300 priority valve is a reliable device designed to regulate the pressure at the inlet to the installation. Its design allows maintaining a constant, fixed pressure level, which is crucial in water supply and industrial systems. The valve remains closed until the set input pressure is reached, and then opens, providing a stable flow. Compact dimensions make it ideal for installation in areas with limited space.

Construction and application

The valve consists of a body with flanges, a CX-PS pilot valve with an internal fine adjustment valve, a regulating circuit with ball valves, and an internal filtering insert. It is made of high-quality materials – ductile iron (GGG 40) for the housing, stainless steel for the adjusting cone and spring, and reinforced nitrile rubber NBR for the diaphragm. This ensures long-lasting and trouble-free operation.

The DH300 valve finds application in sanitary and industrial networks and installations where precise pressure control is required. It can be used in drinking water installations, irrigation systems, high-rise buildings, mining, and in industry (gravel pits, concrete plants). It is particularly useful wherever there is a need to limit the input pressure or connect a supply network with large consumers.

Key features and benefits

• High regulation accuracy: Ensures precise maintenance of the set input pressure.
• Large flow rate: Enables efficient transport of the medium in the installation.
• Compact design: Facilitates installation even in tight spaces.
• Reliability: The use of durable materials guarantees a long service life.
• Replaceable valve insert: Allows easy maintenance and repair without the need to disassemble the entire valve from the pipeline.
• No need for an external power source: The valve operates automatically, reducing operating costs.
• Easy servicing: Access to internal components facilitates inspections and repairs.
• Protection against contamination: The built-in filter prevents damage to the valve and installation.
• Surface protected with epoxy coating: Provides physical and toxicological safety.

The DH300 valve is characterized by a pressure class of PN 16 (or PN 25 on request) and is designed to operate with a liquid with a maximum temperature of 80°C and a maximum pressure of 16 bar. The nominal diameter is DN 65, and the outer pipe diameter is 65 mm. The weight of the device is approximately 15 kg (data from sources may vary). Installation can be carried out in any position, following the arrow indicating the flow direction on the valve body. Remember to flush the pipeline beforehand!