High Performance • Durable • Leak Proof
The Pilot Operated Pressure Reducing Valve delivers precise downstream pressure control with durable construction.
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 Parameter Specification Product Type Pilot Operated Pressure Reducing Valve Operating Principle Pilot-Controlled Media Water / Liquid / Gas / Steam, depending on design Size Range DN40–DN1500 (1½–60 in), depending on design Diaphragm NBR End Connection Flanged / Threaded Pressure Rating PN10 / PN16 / PN25 or ASME Class 125 / 150 / 250 / 300, depending on design Accessories Pilot Assembly / Pressure Gauge / Isolation Components, as required 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.
Pressure Class Options: • Class 150: 275 PSI maximum working pressure • Class 300: 720 PSI maximum working pressure • Class 600: 1440 PSI maximum working pressure Design verification per ASME B16.34 Hydrostatic testing per API 598 standards Pressure-temperature ratings available
Working Pressure: ANSI Class 150-600. Steam service construction. Special high-pressure designs up to 1500 PSI inlet. Manual or pilot-operated
Pressure classes: Class 125 (200 PSI), Class 150 (285 PSI). Operating pressure limited by float mechanism design.
Pressure Classes: 150-300 PSI inlet rating. Reduction Range: 3-175 PSI outlet. Materials: Bronze, 316 SST. Approvals: NSF 61, ASSE 1003
Class 150–600, PN16–100 Design verification per ASME B16.34 / AWWA standards Hydrostatic and operational testing per API 598 / EN 12266-1 Pressure–temperature ratings available
Pressure Classes: ANSI Class 150, 300, 600. PN16, PN25, PN40, PN100. Fail-safe: Spring return (fail close/open). Digital positioner with diagnostics