SINGLE LARGE AIR RELEASE VALVE
SINGLE LARGE AIR RELEASE VALVE
SINGLE LARGE AIR RELEASE VALVE

FIG. 8316 – 8320 SINGLE LARGE AIR RELEASE VALVE

Usage for potable & filtered water
Large orifice air valves allow air to be expelled from the system during filling of a pipeline and admit air back into the system whenever sub-atmospheric pressure occurs.
Air is vented from the system until water enters the valve and lifts the float against its seat ensuring a tight seal.
In the event of sub atmospheric pressure in the system, the water level drops causing the float to fall from its seat and allow the admission of air.
25mm (1”) – 200mm (8”) sizes.
WRAS approved.

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Suitable for:

Building & Construction Valves
Water Valves

Valve type:

- Air Release Valves For Building & Construction
- Water Air Release Valves

Description

Usage for potable & filtered water
Large orifice air valves allow air to be expelled from the system during filling of a pipeline and admit air back into the system whenever sub-atmospheric pressure occurs.
Air is vented from the system until water enters the valve and lifts the float against its seat ensuring a tight seal.
In the event of sub atmospheric pressure in the system, the water level drops causing the float to fall from its seat and allow the admission of air.
25mm (1”) – 200mm (8”) sizes.
WRAS approved.

Options

Various flange drillings
Screwed or flanged outlet facility
Viton rubber seat
Metal float options
Surge arrestor
Inflow / outflow check device
Vented non-return device
Adjustable throttle device
Bib tap / test point
Isolating valve
25 bar version available

Technical Specification

PART

PARTS

MATERIAL

STANDARDS

1

Body

GGG50

BS EN 5163:EN-GJS-500-7

2

Cover

GGG50

BS EN 5163:EN-GJS-500-7

3*

Sheild Plate

GGG50

BS EN 5163:EN-GJS-500-7

*(Spun steel on 150 & 200mm)

4

Large Orifice Seat

EPDM

BS EN2428

5

Large Orifice Float

ABS

BS EN ISO 19062-1:2015

6

Shield Studs & Nuts

304 Stainless Steel

ASTM A276

7

Cover Bolts & Nuts

304 Stainless Steel

ASTM A276

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