FläktGroup EQAZ-19 Automatic pruging valve Installation and Maintenance Manual

Brand: FläktGroup

Model: EQAZ-19 Automatic pruging valve

Type: Installation and Maintenance Manual

FläktGroup DC_8641GB 20180118_R0 We reserve the right to make changes without prior notice

GENERAL

The type EQAZ-19 is an automatic float-controlled airpurging valve

incorporating a non-return valve. The valve is designed for use in

water circuits at maximum conditions of 115 °C and 1,1 MPa (11 bar).

The valve is impervious to high water temperature and to water con-

taining an anti-freeze. Each valve is pressure-tested and checked

for tightness prior to delivery.

PRINCIPLE OF OPERATION

The float drops as air accumulates in the housing, allowing the valve

to open and discharge the air. Water then fills the housing, lifting the

float and closing the valve.

INSTALLATION

The valve must be installed vertically with the vent facing upwards.

Note that a minimum clearance of 12 mm must be provided above

the cap. The non-return valve and purging valve are supplied sepa-

rately. The non-return valve should be fitted in an the nipple before

mounting the purging valve in position. The non-return valve is pro-

vided with a gasket, providing a self-sealing joint between it and the

housing.

OPERATION

In service, the valve cap on top of the purging valve should be un-

screwed two turns. Purging cannot take place if the cap is screwed

down fully.

MAINTENANCE

The valve may be cleaned as follows if leakage occurs due to the in-

gress of dirt: Unscrew the housing from the non-return valve, leaving

the latter in position in the nipple. Unscrew to top of the housing from

the bottom half and clean the components, for example by blowing

with compressed air.

EQAZ-19 AUTOMATIC PURGING VALVE WITH NIPPLE

Caution!

Bear in mind that the water is hot.

Valve cap

Valve housing

Non-return valve

Nippel

4,0 cm

ø 34

Min.

116

R3/8"

EQAZ-19

Finned coil

Mounting on coil

EQAZ-19

AUTOMATIC PURGING VALVE

EQAZ-19

INSTALLATION AND MAINTENANCE INSTRUCTION

FläktGroup EQAZ-19 Automatic pruging valve Installation and Maintenance Manual

FläktGroup EQAZ-19 Automatic pruging valve Installation and Maintenance Manual

FläktGroup EQAZ-19 Automatic pruging valve Installation and Maintenance Manual

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