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Direct Acting Pressure Reducing Valve

South American valve is a top Direct Acting Pressure Reducing Valve manufacturer in Venezuela. A Direct Acting Pressure Reducing Valve (DAPRV) is a type of valve that automatically regulates the downstream pressure of a fluid system by controlling the flow of fluid through the valve. The valve operates by sensing the downstream pressure and adjusting the valve opening to maintain a constant set pressure. The DAPRV is typically used in applications where precise control of downstream pressure is required, such as in steam, water, or gas systems.

It can be used to reduce high upstream pressures to lower downstream pressures, ensuring that equipment or processes downstream operate within safe and optimal pressure ranges. One of the key advantages of the DAPRV is that it operates without any external power source or control circuit, making it a simple and reliable solution for pressure control. The valve can be adjusted manually or equipped with an automatic control mechanism to adjust the set pressure. Overall, the DAPRV is a commonly used valve in many industrial and commercial applications to ensure safe and efficient operation of fluid systems.


  • Valve body
  • Spring
  • Diaphragm
  • Adjusting screw
  • Plug
  • Seat


  • Simplicity: Direct Acting Pressure Reducing valves are simple in design and easy to install. They require very little maintenance and are highly reliable.
  • Efficiency: These valves are designed to operate at high efficiency, reducing the pressure of the fluid or gas stream without causing significant pressure loss or energy waste.
  • Accuracy: Direct Acting Pressure Reducing valves are highly accurate in controlling and maintaining a set pressure, ensuring consistent flow and output.
  • Versatility: These valves can be used in a wide range of applications, including steam, gas, and liquid systems.
  • Safety: Direct Acting Pressure Reducing valves help to prevent over-pressurization of the system, reducing the risk of damage to equipment and injury to personnel.
  • Cost-effective: These valves are cost-effective solutions for pressure control, requiring minimal energy consumption and providing long-lasting service.
  • Durability: Direct Acting Pressure Reducing valves are designed to withstand harsh operating conditions and are constructed from materials that are resistant to wear and corrosion.


  • LNG Industry
  • Industrial Gas Industry
  • Aerospace Industry
  • Chemical industry
  • Oil & Gas


  • Steam systems: These valves are commonly used in steam systems to reduce the pressure of the steam before it enters the process or equipment.
  • Gas systems: Direct Acting Pressure Reducing valves can be used in gas systems to regulate the pressure of natural gas, propane, and other gases used in industrial and commercial applications.
  • Water supply systems: These valves are used to regulate the pressure of water in plumbing and irrigation systems.
  • Oil and gas industry: Direct Acting Pressure Reducing valves are used in oil and gas pipelines to regulate the pressure of crude oil and natural gas.
  • Chemical and petrochemical industries: These valves are used in chemical and petrochemical processes to regulate the pressure of fluids and gases used in various processes.

Available Materials

  • Pressure & Temperature
  • Upstream Pressure range:
  • Pressure: PN16, PN40
  • Downstream Pressure range:
  • Pressure: 1.5 to 6 bar
  • Minimum dynamic differential pressure = 1 bar
  • Temperature range: -10o°C to 70o°C
  • Parts and Materials
  • Body & Bonnet: Ductile Iron (EN1563 EN-GJS-450/10)
  • Spring: Steel (1.7104 55siCr6)
  • Seat, Bushing, Fasteners: Stainless Steel (EN10088 1-4301)
  • Seal: EPDM