Indus Industrial Group supplies heavy-duty Single-Chamber Compact Automatic Air Release Valves engineered in nominal threaded inlet sizes DN25 (1"), DN32 (1.25"), DN40 (1.5"), and DN50 (2") in pressure classes PN16 and PN25 according to EN 1074-4 and AWWA C512 standards. Designed for municipal distribution branch networks, building risers, pump discharge casings, and irrigation manifolds across Iraq, these compact valves continuously vent micro-air bubbles that come out of solution while the pipeline operates under full working pressure, maintaining maximum pump efficiency and eliminating flow choking.
| Pricing Verification | Commercial Quote on Demand (RFQ) |
| Governing Standards | EN 1074-4 / AWWA C512 / ISO 5208 / DIN 3230 |
| Inlet Thread Sizes | DN25 (1"), DN32 (1-1/4"), DN40 (1-1/2"), DN50 (2") BSP / NPT |
| Pressure Ratings | PN16, PN25 (16 Bar / 25 Bar Working Pressure) |
| Micro-Orifice Diameter | 1.5 mm to 2.5 mm precision venting orifice |
| Body & Bonnet Material | Ductile Iron EN-GJS-500-7 / Stainless Steel AISI 316 |
| Float Material | Stainless Steel AISI 316 / Polypropylene Foam Float |
| Sealing Plug | High-Elasticity EPDM / Silicone Rubber (WRAS certified) |
| Minimum Sealing Pressure | 0.2 Bar (Low-pressure bubble-tight shutoff) |
| Surface Protection | Fusion-Bonded Epoxy (FBE ≥ 250 µm) WRAS Certified |
| Operating Temperature | -10°C to +60°C continuous water service |
| Sector & Division | Water & Wastewater (Div 01) |
| Parent Category | Kinetic Air Valves |
Centrifugal pump volute casing automatic air venting, water treatment plant filter manifolds, building booster pump risers, agricultural pressurized irrigation headers, and urban distribution branch high spots across Baghdad, Erbil, Basra, Sulaymaniyah, and Karbala.
Single-Chamber Compact Automatic Air Release Valves provide the essential continuous degassing capability for municipal water distribution networks, pump volute casings, filter batteries, and commercial building plumbing systems across Iraq. When water is pressurized and pumped from rivers or wells in Baghdad, Erbil, and Basra, dissolved air is continuously released from solution as micro-bubbles due to pressure and temperature changes. These micro-bubbles collect at localized high spots, pipe elbows, and pump heads, forming air pockets that restrict water flow, cause flow pulsing, and accelerate internal pipe corrosion.
Indus compact automatic air valves feature a precision-engineered lever-float mechanism housed inside a compact, heavy-wall ductile iron or stainless steel chamber. As micro-air enters the valve chamber, the water level slowly drops. The buoyant stainless steel or composite float sinks, actuating a high-precision lever linkage that pulls a resilient silicone or EPDM sealing plug away from a micro-orifice (typically 1.5mm to 2.5mm diameter). The accumulated air is discharged smoothly under full pipeline working pressure (up to 25 Bar) without spraying water. Once air is evacuated, the water level rises and the float re-seals the orifice hermetically.
The compact threaded body (BSP or NPT female/male threads) allows direct installation on small branch saddles or pump vent taps without requiring bulky flanged connections. Finished in fusion-bonded epoxy (min 250 µm), Indus compact air valves are stocked in massive volume at our Erbil, Baghdad, and Basra facilities with full EN 10204 3.1 inspection certification.
They should be installed directly on the top of the pump casing (using the volute vent plug port) and at the highest point of the pump discharge manifold. This ensures air released during pumping is continuously expelled before it enters downstream piping.
No. Indus compact air valves utilize an engineered lever mechanism that multiplies float buoyancy force, cracking the micro-orifice just enough to release pressurized air while reseating tightly the instant liquid water reaches the seal, preventing nuisance water spraying.
Yes. Indus supplies complete installation sets including a 1" or 2" full-port brass or stainless steel isolating ball valve and nipple, allowing easy inspection without shutting down the water main.
