FIG. 3800 – 3803 SINGLE SMALL AIR RELEASE VALVE

Usage for potable & filtered water

During normal working of the main the valve releases the air which accumulates under pressure.
With the main in operation, the float is normally against its seat.
As air enters the body the water level is depressed until a level is reached when the float drops from its seat, which allows air to escape.
The consequent rise in water level returns the float to its seat.
Efficient low pressure sealing at 0.3bar.
Lightweight design.
WRAS approved.
2.3mm (4.1mm2) orifice.

Suitable for:

Valve type:

Description

Usage for potable & filtered water

During normal working of the main the valve releases the air which accumulates under pressure.
With the main in operation, the float is normally against its seat.
As air enters the body the water level is depressed until a level is reached when the float drops from its seat, which allows air to escape.
The consequent rise in water level returns the float to its seat.
Efficient low pressure sealing at 0.3bar.
Lightweight design.
WRAS approved.
2.3mm (4.1mm2) orifice.

Options

NPT threaded.
Flanged inlet with various drillings.
Screwed outlet facility.
Viton rubber.
Metal float assembly options.
2.9mm & 3.75mm orifice sizes available.
Inflow / outflow check.

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

Float

ABS

BS EN ISO 19062-1:2015

4

Orifice Plug

ABS

BS EN ISO 19062-1:2015

5

Retaining Nut

ABS

BS EN ISO 19062-1:2015

6

Orifice Seal

EPDM

BS EN2428

7

Stop Screw

Stainless Steel

ASTM A276

8

Hinge Pin

Stainless Steel

ASTM A276

9

Body Joint

EPDM

BS EN2428

10

Plug Joint

EPDM

BS EN2428

11

Bolt & Nut

Stainless Steel

ASTM A276

12

Nipple

Stainless Steel

ASTM A276

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