SKAR - Sewage Combination Air Release Valve

Name: SKAR - Sewage Combination Air Release Valve
Brand: Euro Flow Control
SKU: EFC-340

Datasheet

Download datasheet (PDF)

Specifications are indicative. Final specification is confirmed at quotation.

Specifications

Confirmed at quote

Size Range: DN50 to DN300
Pressure Class: PN10, PN16, PN25
End connection: Flanged
Operating temperature: -10°C to 80°C

Standards

Design & manufacture: BS EN 1074-4, AWWA C512

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
Cover
Eyebolt
Float
Hex Bolt
Middle Part
Orifice Seat
Pillar
Plug
Sealing Arc
Small Orifice
Washer

Pressure-temperature rating

Maximum working pressure at each temperature, per pressure class.

Class	Pressure	Min temp	Max temp
PN10	10 bar	-10°C	80°C
PN16	16 bar	-10°C	80°C

Dimensions per size(6 sizes)

Size	H (mm)	PN10 D (mm)	PN10 K (mm)	PN10 B (mm)	n-d PN10 (mm)	C (mm)	Max water flow rate (m3/h) (m3/h)	Small orifice size (mm)	n-d PN16 (mm)	Weight
DN50	558	165	125	99	4-Ø19	19	1360	2	-	—
DN80	653	200	160	132	8-Ø19	19	4160	3	-	—
DN100	676	220	180	156	8-Ø19	19	8500	3.5	-	—
DN150	810	285	240	211	8-Ø23	19	19100	4	-	—
DN200	950	340	295	266	8-Ø23	20	33400	5.5	12-Ø23	—
DN300	1173	460	410	370	12-Ø23	24.5	76300	6	12-Ø28	—

* Small orifice size and max water flow rate from the SKAR datasheet Big Nozzle Exhausting/Intake and Small Orifice Venting charts, keyed by DN.

Technical drawings(5 pages)

Typical applications

Sewage rising mains
Force mains
Wastewater pump stations

Approvals

ISO 9001

Features

The SKAR sewage combination air release valve is designed for pressurised sewage rising mains and force mains
The robust ball float mechanism resists clogging from sewage constituents including rags, greases and suspended solids
Provides large-orifice kinetic venting on filling and continuous small-orifice air release under operating pressure
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
Manufactured to BS EN 1074-4 and AWWA C512; flange drilling and dimensions to BS EN 1092 and ANSI flange

Description

The SKAR sewage combination air release valve is designed for pressurised sewage rising mains and force mains. The robust ball float mechanism resists clogging from sewage constituents including rags, greases and suspended solids. Provides large-orifice kinetic venting on filling and continuous small-orifice air release under operating pressure.

Selection notes

This air release valve is supplied for flanged installation.

Sizes run DN50 to DN300, in PN10, PN16, PN25.

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.

It is catalogued for Water & Wastewater.

Working temperature is -10°C to 80°C.

Built to BS EN 1074-4, AWWA C512 and BS EN 1092.