Indus Industrial Group supplies heavy-duty Pilot-Operated Hydraulic Pressure Reducing and Sustaining Control Valves (PRV) engineered across nominal diameters from DN50 to DN600 in pressure classes PN16 and PN25 according to AWWA C530 and EN 1074-5 standards. Utilizing line fluid hydraulic pressure for autonomous diaphragm actuation without external power, these valves reduce higher, fluctuating upstream pressure to a precise, pre-set, constant downstream pressure regardless of flow rate fluctuations or inlet pressure spikes. Fabricated from high-tensile ductile iron (EN-GJS-500-7) with stainless steel 316 pilot control trim, self-cleaning mesh strainers, and anti-cavitation trim options, they are essential for municipal pressure management and pipe burst reduction across Iraq.
| Pricing Verification | Commercial Quote on Demand (RFQ) |
| Governing Standards | AWWA C530 / EN 1074-5 / ISO 10522 / BS EN 1267 |
| Face-to-Face Standard | EN 558-1 Series 1 (ISO 5752) / ANSI B16.10 |
| Nominal Diameter Range | DN50 to DN600 (Flanged Metric Sizes) |
| Pressure Classes | PN16, PN25 (Bar) |
| Downstream Adjustment Range | 1.0 Bar to 12.0 Bar (Standard adjustable spring ranges) |
| Body & Bonnet Material | Ductile Iron EN-GJS-500-7 (min 420 MPa tensile strength) |
| Pilot Trim & Tubing | Stainless Steel AISI 316 / Forged Brass / Copper Options |
| Diaphragm Material | Nylon-Reinforced EPDM / Natural Rubber (High flex life) |
| Pressure Regulation Accuracy | ± 0.2 Bar across 5% to 100% rated flow rate |
| Surface Protection | Fusion-Bonded Epoxy (FBE ≥ 250 µm) WRAS Drinking Water Certified |
| Sector & Division | Water & Wastewater (Div 01) |
| Parent Category | Pressure Reducing Valves |
Municipal District Metered Area (DMA) pressure zoning, gravity feed transmission mains from mountain reservoirs, high-rise building booster distribution risers, water treatment plant dosing feed lines, and industrial cooling network pressure reduction across Baghdad, Erbil, Basra, Sulaymaniyah, and Duhok.
Pilot-Operated Hydraulic Pressure Reducing Valves (PRVs) represent the cornerstone of municipal pressure zoning (District Metered Areas - DMAs), leakage reduction, and infrastructure protection across Iraq. In major cities such as Baghdad, Erbil, Basra, and Kirkuk, excessive pipeline pressures during low-demand nighttime hours cause catastrophic pipe bursts, joint blow-outs, and massive non-revenue water (NRW) losses. Governed by AWWA C530, EN 1074-5, and ISO 10522 standards, Indus pilot-operated control valves automatically modulate main valve opening using line water pressure, maintaining downstream delivery pressure within ±0.2 Bar of setpoint across widely fluctuating flow regimes.
The main valve body features a globe-pattern hydrodynamically swept profile cast from premium ductile iron (EN-GJS-500-7) with a resilient elastomeric diaphragm-actuator assembly. The pilot control loop is engineered from marine-grade stainless steel (AISI 316) incorporating an adjustable direct-acting pressure reducing pilot, stainless steel needle valve for speed regulation, and an internal self-cleaning mesh strainer that prevents suspended river silt from fouling control orifices. An optional dual-chamber actuator or anti-cavitation slotted cage is provided for high-differential pressure drops, completely eliminating cavitation pitting, noise, and vibration.
Coated inside and out with electrostatically applied blue fusion-bonded epoxy (min 250 µm, WRAS approved), the valve operates reliably in damp underground vaults and desert soil environments up to +55°C. Staged at the Erbil Heavy Plant Yard, Baghdad Central Logistics Depot, and Basra Port Corridor, Indus provides complete PRV assemblies with pre-calibrated pilots, inlet/outlet glycerin pressure gauges, isolating cock valves, and EN 10204 3.1 inspection certification.
Indus PRVs are 100% hydraulically operated. The valve utilizes the kinetic and hydrostatic energy of the water flowing through the pipeline. The stainless steel pilot senses downstream pressure changes and modulates pressure inside the upper diaphragm chamber, opening or closing the main valve automatically without needing electricity or battery backup.
Every Indus pilot circuit incorporates an in-line self-cleaning stainless steel fine wire-mesh strainer located at the high-pressure water inlet. Turbulent flow across the main valve seat continuously washes the strainer face, preventing Tigris and Euphrates silt and scale from entering the pilot lines.
Each valve is delivered fully assembled and bench-tested, equipped with upstream and downstream glycerin-filled pressure gauges, pilot speed needle valve, isolating ball cocks, and calibration instructions ready for immediate field commissioning.
