KINGNA TRADING

Product Catalog

Combination Air Valve (CARX)

Industrial valves and fittings dispatch fast — wear parts and complete machines quoted on request.

Air Release Valves

Air valves that vent and admit air to keep pipelines flowing and prevent vacuum collapse.

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The combination valve is the double-orifice valve with the kinetic part done properly in one body: bulk venting while the main fills, continuous venting while it runs, and fast air admission on vacuum. It is what gets specified when there is one tapping point and no room for two valves, which on a transmission main is almost always. Because it does all three, the selection has to state the filling rate and the vacuum case — a combination valve picked on bore size alone will either pass water at the small orifice or be too small to protect the line.

General Specifications

Size RangeDN50 – DN200
ModelCARX
Pressure RatingPN10 / PN16
End ConnectionDouble flanged
Flange DrillingBS EN 1092-2 (DIN 2501)
FunctionBulk air release + continuous venting + vacuum breaking
ServiceTransmission mains, reservoirs, distribution networks
Max. Working Temperature70 °C standard (EPDM) — NBR for 80 °C, FKM for up to 150 °C on request

Materials & Coating

BodyDuctile iron, epoxy coated
Internal TrimStainless steel (grade per order)
FloatStainless steel

Applications

Transmission mains Reservoirs Distribution networks Pump stations

More from this series

Combination Air Valve (CARX) — Front view of a blue industrial valve with a pressure gauge

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