FläktGroup EUAZ-19 Automatic purging valve EUAZ-20 Nipple Installation guide

Brand: FläktGroup

Model: EUAZ-19 Automatic purging valve EUAZ-20 Nipple

Type: Installation guide

Fläkt Woods 3191 GB 03.01 1 Specifications are subject to alteration without notice

EU Air Handling Unit INSTALLATION

EUAZ-19 automatic purging valve, EUAZ-20 nipple

General

The type EUAZ-19 is an automatic float-controlled air

purging valve incorporating a non-return valve. The valve

is designed for use in water circuits at maximum condi-

tions of 115° C and 1,1 MPa (11 bar).

The valve is impervious to high water temperature and

to water containing 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, al-

lowing 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

separately. The non-return valve should be fitted in an

EUAZ-20 nipple (see Figs. 2 and 3). before mounting the

purging valve in position. The non-return valve is provi-

ded 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 unscrewed 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 ingress of dirt: Unscrew the housing from the non-

return valve, leaving the latter in position in the EUAZ-

20 nipple. Unscrew to top of the housing from the bot-

tom half and clean the components, for example by

blowing with compressed air.

ø 34

Min.

R3/8"

Valve cap

Valve housing

Non-return valve

Nipple

Fig. 1 Fig. 2 Fig. 3

EUAZ-19

EUAZ-20

EUAZ-19

EUAZ-20

Finned coil

FläktGroup EUAZ-19 Automatic purging valve EUAZ-20 Nipple Installation guide

FläktGroup EUAZ-19 Automatic purging valve EUAZ-20 Nipple Installation guide

FläktGroup EUAZ-19 Automatic purging valve EUAZ-20 Nipple Installation guide

Related papers

Other documents