Description
The Combination Air Valve combines an Air & Vacuum large orifice and an Automatic small orifice in a single body.
The valve is specially designed to operate with liquids carrying solid particles such as sewage and effluent.
The combination air valve discharges air (gases) during the filling or charging of the system, admits air to the system while it is being emptied of liquid and discharges accumulated air (gases) from the
system while it is under pressure and operating.
The valve's unique design guarantees complete separation of the liquid from the sealing mechanism and provides optimum work conditions.

Main Features
• Working pressure range: 3 - 250 psi.
• The valve's unique design prevents any contact between sewage and the sealing mechanism by creating an air gap at the top of thevalve. This air gap is guaranteed even under extreme conditions.
Those features are achieved by:
• The conical body shape and the external lever designed to: maintain the maximum distance between the liquid and the sealing mechanism; so as to obtain minimum body length.
• Spring loaded joint between the stem and the upper float.
• Vibrations of the lower float will not unseal the automatic valve.
• Release of air will occur only after enough air accumulates.
• Funnel-shaped lower body is designed to ensure that residues sewage matter will fall back into the system and be carried away by the main pipe.
• All internal metal parts made of stainless steel.
• Maximum working temperature 203° f.

Valve Selection
• These valves are available with flanged 3” -4”, ANSI standard.
• A.R.I Valves can be adapted to various types of liquid by coating with Enamel or Vulcanized Coating upon request.

Ordering
Upon ordering, please specify: model, size, working pressure, threads/flanges standard and type of liquid.

More information:

Data sheet (1250 KB)