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- ARI - Model D-021 - Combination Air ...
ARI - Model D-021 -Combination Air Valve - Reclaimed & Non-Potable Water
A.R.I. D-021 is a reduced-bore ultra-compact combination air valve installed on a raw water transmission system to increase pipeline efficiency and reduce energy requirements by improving the hydraulic operation of the system. A continuous air gap at the top of the air valve separates the reclaimed water from the sealing mechanism.
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- Conical body shape & unique design - maximum air gap / minimum body length.
- Continuous air gap- separates the liquid from the sealing mechanism.
- Float assembly and sealing mechanism linkage - free movement, turbulence will not unseal the sealing mechanism.
- Funnel-shaped lower body - residue matter falls back into the system pipeline.
- Rolling seal mechanism - leak-free sealing over a wide range of pressure differentials.
- All parts - stainless steel 316, polymer, rubber materials - non-corrosive and durable.
- Screened threaded outlet - compatible with vent pipe connection, prevents insect intrusion.
- Dynamic design - high capacity air discharge, no premature closure.
- Tap - releases pressure and drains valve prior to maintenance
- Size Range 1” - 2”
- Sealing pressure range Sealing pressure range: 0.1 - 10 bar (PN 10)
- Testing pressure: 1.5 times maximum working pressure
- Temperature Maximum working temperature: 60° C
- Maximum intermittent temperature: 90° C
Water with low concentrations of suspended solids:
- Reclaimed water
- Raw water
- Effluent water
- Coolant water