Pressure reducing valve suppliers in GABON

African valve is the top Pressure reducing valve suppliers in GABON. The pressure reducing valve may be used for water hammer protection under properly defined conditions. The water hammer events are so fast that the relief of pressure by this means requires very special rapid response valves designed for the particular system.

Pressure relief valves may also be used as an added precaution where some other method is in place as the basic protection device, such as an air vessel.

There are also by-pass valves which are required to operate when a pump stops due to a power failure or normal trip, anticipating the eventual return flow, and then being required to be closed to prevent the excessive waste of the return flow.

A pressure reducing valve (PRV) is a device that regulates the pressure of a liquid or gas between the inlet and outlet sides of a system. PRVs are used to maintain a constant, reduced pressure downstream, regardless of changes in the supply pressure or system load. 

 

 

Working:

African valve is theTop Pressure reducing valve suppliers in GABON, a pressure reducing valve (PRV) reduces a high inlet pressure to a lower outlet pressure. The working of a PRV is based on the use of a spring and diaphragm to open and close the valve: 

Opening

When the outlet pressure is below the valve's set point, the spring pressure overcomes the outlet pressure and opens the valve.

Closing

As the outlet pressure increases, the pressure under the diaphragm overcomes the spring pressure and closes the valve.

Adjusting

The downstream pressure can be adjusted by turning the adjusting screw, which changes the spring pressure against the diaphragm.

PRVs are often used in pneumatic systems and are also known as pressure regulators. 

       

            Types:

Direct acting pressure reducing valve

Pilot operated pressure reducing valve

Pressure-sustaining pressure reducing valve

 

Industries:

Mechanical engineering: PRVs are used to control clamping pressures for hydraulic chucks on lathes

Steam: PRVs are used in direct steam supply, engines, and turbines.

Oil and gas: PRVs are used in compressed air systems, power tools, pneumatic control systems, and control valves for industrial gas storage and distribution systems.

Water: PRVs are used in domestic and industrial water distribution systems, fire protection systems, and to conserve water.

Construction machinery: PRVs are used to adjust pressure forces, weight compensation, and relief of heavy machine parts.

PRVs are self-actuated control valves that convert higher pressure into lower pressure. They are vital for stable pressure control and are valuable components in modern industries and plumbing systems

 

Application:

Steam

PRVs are used in direct steam supply, engines, and turbines. 

Oil and gas

PRVs are used in compressed air systems, power tools, pneumatic control systems, and industrial gas storage and distribution systems

Water

PRVs are used in domestic, commercial, industrial, and workplace water installations. They are often installed in homes, commercial buildings, and manufacturing plants after the water meter. PRVs can protect against excessive pressure from the water supply main. 

 

Other applications

PRVs are also used in bearing lubrication systems, hydraulic presses, sterilizers, humidifiers, unit heaters, and small process equipment. 

PRVs work by reducing a high primary pressure to a lower, constant secondary pressure. They also measure and correct deviations in pressure. PRVs ensure that the components downstream of the valve aren't exposed to high pressure, which could result in damage

 

 

 

Advantages:

Ensures reliable and stable pressure for household water systems

Prevents “screaming” noise caused by high flow velocities

Reduces risk of water leaks

Stops loud, banging water hammer caused by built-up water pressure from closing taps

Automatically conserves water when used in high pressure areas

Reduces the energy required to heat water for showers, dishwashers, washing machines, etc.

Limits water waste by lowering flow rates

Protects water-using appliances and fixtures by reducing the amount of water pressure on them

Saves money on water costs

 

Features:

PRVs convert higher pressure into lower pressure. They are used to regulate pressure in systems, such as in water, steam, and oil and gas industries. 

PRVs typically consist of an inlet port, an outlet port, a spring that controls the diaphragm, and a diaphragm that adjusts to maintain the set downstream pressure

PRVs use a spring-loaded mechanism or pilot-operated design to detect and control pressure. When the pressure exceeds the valve's set point, the valve opens to allow fluid or gas to flow through and lower the pressure.

PRVs are used in a variety of applications, including:

Offshore rigs and pipelines: PRVs relieve excess pressure caused by surges or system fluctuations. They also protect expensive equipment such as pumps and compressors from damage due to overpressure. 

Gas grills: PRVs regulate propane. 

Home heating furnaces: PRVs regulate natural gases. 

Medical and dental equipment: PRVs regulate oxygen and anesthesia gases. 

Pneumatic automation systems: PRVs regulate compressed air. 

Engines: PRVs regulate fuel. 

 

Parts:

Diaphragm: A pressure-responsive component that adjusts to maintain the set downstream pressure

Spring: Controls the diaphragm and expands when the downstream pressure drops

Inlet port: Connects to the pump

Outlet port: Connects to the system

Orifice: Connects the inlet and outlet ports

Valve body: Stabilizes flow while regulating pressure

V port throttling plug: Provides a stable response for flow and pressure regulation

Pilot regulator: Determines the flow of water between the control chamber

Application:

Water wells: Installed at the bottom of a well, foot valves keep the pump primed and ready to use. They also prevent water from flowing backward into the well when the pump is off. 

Ponds and pools: Foot valves are used in pond pumps for aeration or irrigation. 

HVAC systems: Foot valves are used in HVAC systems. 

Car wash systems: Foot valves are used in car wash systems. 

Irrigation systems: Foot valves are used in irrigation systems. 

Sump pumps and intake pumps: Foot valves are used in sump pumps and intake pumps in rivers and lakes. 

Rural fire protection systems: Foot valves are used in rural fire protection systems. 

Pneumatic brake lines: Foot valves are used in the pneumatic brake lines of commercial trucks. 

Difference between pressure relief and pressure safety valve

Operation

PRVs open at a set threshold to relieve excess pressure, and close once the pressure returns to a safe level. PSVs automatically activate when pressure exceeds a setpoint, and quickly release gases to restore equipment pressure to a safe level. 

Certification

PRVs often adhere to general industry standards and regulations, while PSVs are subject to stringent certification and code requirements. 

Materials

PRVs are commonly made from brass, plastic, aluminum, or various grades of stainless steel. PSVs are often made from carbon steel for moderate temperatures, or stainless steel for corrosion or clean steam. 

Leaks

PRVs can be a potential source of leaks if they are not properly maintained

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