SKSA - Sewage Combination Air Release Valve (Anti-Shock)
Datasheet
Download datasheet (PDF)Specifications are indicative. Final specification is confirmed at quotation.
Specifications
Confirmed at quote- Size Range
- DN50
- Pressure Class
- 16 bar
- End connection
- Threaded
- Operating temperature
- -10°C to 80°C
Standards
- Materials
- EN GJS 500-7, AISI 316, NBR
Configure your variant(manually adjust box on the right if you require a different spec)
- Size
- Pressure
- End connection
Materials
All available material options per part. Click a pill to set it in the configurator.
- Body
- Bonnet
- Seat
- Stem
- O-Ring
- Spring
- Anti Shock Device
- Butterfly Ball Valve
- Float
- Guide Barrel
- Hex Bolt
- Middle Part
- Nozzle Seat
- Nut
- Plug
- Screw
- Sealing Arc
- Small Nozzle
- Washer
Pressure-temperature rating
Maximum working pressure at each temperature, per pressure class.
| Class | Pressure | Min temp | Max temp |
|---|---|---|---|
| — | 16 bar | -10°C | 80°C |
Dimensions per size(1 sizes)
| Size | A1 (thread) | A2 (thread) | A3 (thread) | C (mm) | H1 (mm) | H (mm) | Small orifice size (mm) | Weight |
|---|---|---|---|---|---|---|---|---|
| DN50 | G2" | G2" | BSPT 3/8" | 25 | 48 | 333.5 | 1.4 | — |
Technical drawings(3 pages)
Operating media
Typical applications
- Sewage rising mains
- Force mains
- Wastewater pump stations
- Municipal sewer networks
Coatings
Approvals
Features
- The SKSA is a sewage air release valve for pressurised sewage rising mains and force mains
- The single-chamber design provides continuous small-orifice air release under operating pressure, venting accumulated air pockets to maintain hydraulic efficiency
- The ball float mechanism resists clogging from fibres, greases and solids in municipal wastewater service
- Compact body profile suits installations where space above the main is limited
- Advanced design with simple mechanism, strong float to prevent cracking during sudden water hammer and quick closure
- Aerokinetic mechanism resists blow-shut under high air velocity, even up to sonic velocity of air
- Special fat body design lowers sewage water flow speed, letting air out while keeping sewage water underneath
- Keeps dirty or corrosive liquid inside the body for safety during operation, with no harm to people or the surrounding environment
- Internal body guide and upper round wall keep the float moving on its rail and contain liquid turbulence within that area
- Much bigger air flow through the nozzle, even for higher-viscosity liquid
- Optional outside screen guards against insects or birds entering
- Fully fusion epoxy coated inside and outside for long-term service
Description
The SKSA is a sewage air release valve for pressurised sewage rising mains and force mains. The single-chamber design provides continuous small-orifice air release under operating pressure, venting accumulated air pockets to maintain hydraulic efficiency. The ball float mechanism resists clogging from fibres, greases and solids in municipal wastewater service. Compact body profile suits installations where space above the main is limited.
Selection notes
This air release valve is supplied for threaded installation.
Sizes run DN50, in 16 bar.
The body is EN-GJS-500-7.
Seat and trim options are NBR. The seat, not the body, usually sets the temperature and medium limit, so confirm it against the service before ordering.
Stated service media include sewage water.
It is catalogued for Water & Wastewater.
Working temperature is -10°C to 80°C.
Built to EN GJS 500-7, AISI 316, ANSI (flange), BS EN 1092 and BS EN 1092 (flange).
Supplier remarks
- Datasheet flow charts (DN50): out-flow reaches a differential of about 0.04 bar at approximately 80-105 m3/h; in-flow (vacuum) reaches about -0.4 bar at approximately 2500 m3/h. Small orifice (1.4mm) rated to a maximum working pressure of approximately 20 bar.
Used in
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