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Pressure Relief Valve PRV

British standard

Size range:

2”-24”(DN50-DN600)

Design standard:

CJ/T 219, JB/T 10674, BS EN 558 Series 10

Connection standard: EN 1092-2

Working pressure: PN25, PN16, PN10

Working temperature: 0℃-80℃

American standard

Size range:

2”-16”(DN50-DN400)

Design standard: CJ/T 219, JB/T 10674

Connection standard: ASME B16.1

Working pressure: 300PSI/250PSI/200PSI/175PSI

Working temperature: 0℃-80℃

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Product description

Safety pressure relief/pressure maintaining valve is a diaphragm type hydraulic control valve that uses the pipeline's own hydraulic pressure as the driving source. The main feature of this valve is that it can be used as both a pressure relief valve and a pressure maintaining valve. When used as a safety pressure relief valve, it releases the high pressure in the system pipeline that exceeds the set valve setting pressure value in front of the valve to prevent high pressure or sudden pressure in the pipeline from damaging the pipeline and equipment in front of the valve; when used as a pressure maintaining valve, it can maintain the water supply pressure upstream of the main valve at a certain set value to give priority to ensuring water use in the area upstream of the main valve.

Customer challenge

Regular cleaning required

The traditional way is to use a Y-type filter at the inlet of the valve control chamber. This type of filter is prone to clogging and requires regular maintenance and cleaning.

Short service life

The traditional single-chamber structure has internal parts that are greatly impacted by hydraulic forces and has a short service life.

Unstable product performance

Most products on the market use inferior pilot valves, resulting in unstable product performance and prone to cavitation.

High flow loss

Most products on the market use T-shaped reduced diameter design to reduce costs, resulting in high flow resistance, low hydraulic efficiency, and waste of energy.

Product function

With self-cleaning function

Long service life

Stable product performance

Small flow loss

Our company's valve body is installed with a built-in filter screen, which has a filtering function. The valve is free from cleaning.

The valve body structure of our company is a double-chamber structure, which avoids the impact of high-pressure water and sand, stones and other substances in the water flow on the diaphragm. The diaphragm material contains a nylon reinforced fiber layer, resulting in a long service life.

Our company's products use high-quality pilot valves. The valve body is of spherical and Y-shaped structure. The flow channel design is reasonable, and it is not easy to generate harmful flow states such as turbulent flow and eddy current, reducing the risk of cavitation damage.

Our company's products are designed with full bore, with strong flow capacity and small water flow loss.

Value advantage

Orifice design

The internal orifice design. The orifice connecting the control chamber of the lower chamber of the main valve and the outlet after the valve can make the valve respond more gently, maintain pressure stability, and avoid pipeline vibration and noise.
Unattended operation

The product can operate automatically in pipeline control without the drive of external power sources, saving energy and truly realizing unattended operation.
Self-cleaning design

The main valve adopts a double-chamber structure to avoid the impact of high-pressure water and sand, stones, etc. in the water flow on the diaphragm. The service life of the diaphragm can reach 1 million times.
Easy maintenance

The diaphragm has the characteristics of being able to be assembled and disassembled as a whole, which is convenient for maintenance. As a soft piston, the diaphragm has the advantages of no jamming, sensitive action, and precise control.
Reasonable flow channel design

The valve body has a spherical and Y-shaped structure with full bore design. It has strong flow capacity and small water flow loss. The flow channel design is reasonable and is not prone to generate harmful flow states such as turbulence and eddy current, reducing cavitation damage.

Relevant data

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