Pilot Operated Pressure Reducing Valve

To counter the operational stresses of high pressure drops and erratic flow patterns in local process industries, choosing the right valve technology is paramount. Professional Pilot Operated Pressure Reducing Valve Suppliers in Nigeria supply high-performance, hydraulically driven valves that regulate large-scale fluid systems without external power. These valves rely on a sensitive pilot control system to keep downstream pressure perfectly uniform, making them the premier choice for contractors executing high-capacity infrastructure projects across Nigeria.

Key Features

• Pilot-controlled regulation - Uses a pilot circuit to regulate the main valve.

• Stable downstream pressure - Maintains the set outlet pressure as demand changes.

• High-flow capability - Suitable for larger-capacity pressure-control applications.

• Adjustable pressure setting - Allows the downstream pressure to be set for the required system conditions.

• Automatic hydraulic operation - Uses the system's own pressure for valve control.

• Controlled pressure reduction - Suitable for substantial inlet-to-outlet pressure differentials.

• Serviceable design - Pilot and internal components can be inspected and maintained according to the valve configuration.

Technical Specifications

Valve sizing should be based on minimum and maximum flow rate, inlet and outlet pressure, pressure differential, fluid characteristics and required operating conditions - not simply the connected pipeline size. Incorrect sizing can contribute to unstable regulation, excessive pressure drop and cavitation.

Materials & Components

Body Materials

• EN-GJS-400 / EN-GJS-500-7 Ductile Iron 

Internal & Control Components

• Pilot Assembly: Stainless Steel / Brass / Bronze

• Seat: Stainless Steel / Bronze / Soft Seat Material

• Diaphragm: EPDM / NBR

• Stem: Stainless Steel

• Spring: AISI 304 Stainless Steel / Spring Steel

• Seals & O-Rings: NBR / EPDM, depending on design

• Fasteners: Stainless Steel A2 / A4 or Carbon Steel, depending on design

• Internal Coating: Fusion-Bonded Epoxy / Project-Specified Coating

Applications in Nigeria

Pilot-operated pressure reducing valves are suitable for large water-transmission networks, pressure-control stations, trunk mains, reservoir outlets and distribution zones in Nigeria, including major infrastructure such as the Greater Abuja Water Supply Network. They can also be configured for process water, utility and other compatible industrial services requiring stable downstream pressure. African Valve supplies these valves with suitable sizes, pressure classes, materials and pilot configurations selected for the project requirements.

Standards

Applicable standards depend on the valve construction and service. EN 1074-5 is relevant to control valves used in water-supply systems, while ASME B16.34 may apply to industrial valve construction within its scope. Testing, flange and material requirements should be selected according to the valve design and project specification.