Copyright 2020 - EVS - Express Valve Services Limited



Express Valve Services Ltd provide the complete range of Clean and Dirty Water Air Valves to maintain system design efficiency and provide system protection.


Efficiency - Air valves allow venting of air from a system that may cause restriction of flow and increase pumping costs.


Protection - By exhausting and admitting air through the air valves during system operations of start-up, shutdown, and critical conditions, ideally suited for reduction for destructive surges, water hammer normally associated with uncontrolled air or a vacuum condition within a pipe system. 



Design FeaturesAir valves

Single, Large/Double Orifice, Combination, Squat pattern for pressure upto 25 bar.
Size 1/2" - 200mm dia (larger sizes available)  
Materials Available
Body Cast Iron, GRP, Cast Aluminium  
Float Aluminium, GRP, Stainless Steel  
Connection Flanged and Threaded Inlets  

Isolation Gate (EVS 50)
Butterfly Valve (EVS 300)
Gearbox (EVS 55)


Water and Sewage Air Valves



EVS 160
PDF available
EVS 50
PDF available
EVS 55
PDF available
EVS 300
PDF available


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