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.
D70Q Dynamic combination air valve and pressure relief valve The A.R.I. D-070 Q Combination Dynamic Air and Pressure Relief Valve combines two components in a single product to provide maximum line protection.
A.R.I K-050 Series is a reduced bore Air & Vacuum Air Valve. Valve operation includes venting air from a filling pipeline and also vacuum breaking (air intake) of a draining pipeline, to optimizie pipeline hydraulic efficiency and flow.