Camozzi Pneumatics Manual

AIR PRODUCTION AND PREPARATION

Figure 5

Pos. 2

the ball valves

, with a 90° rotation of the handle, are able to regulate the opening or closing of the

passage, thus enablingmaintenanceworkwithout the necessity of disconnecting themachine from the network.

Water

Functioningof the

refrigerator

Air

Ball valves

Fig. 5

From the receiver tank to the point of use

The piping network, which takes care of the distribution of the compressed air connecting the tank to the various

user points of the air is defined as follows: the

primary and secondary network

Primary network

This is the network, which runs horizontally from the receiver tank along the perimeter of the area to be served.

It can be constructed in a number of ways. This network is to be considered as an extension of the tank and

dimensioned in such away so as not to create either flow variations or pressure drops.

For proper installation and sizing of the primary network, the following should be considered: the pressure drop

between the end points of the network and the request for compressed air which is determined by the number of

user points, plus a safetymargin.

Possible solutions for the installation of the primary network.

Figure 6

Pos. 1

Open circuit

: this layout may be suitable when air is not drawn simultaneously along the whole of the

network. On the contrary, there will be a continuous drop of the flow in the tubes, risking that the outlets at the

end of the linewill not receive an adequate pressure. A temporary network disconnection interrupts the supply to

all downstream pipe-work.

Pos. 2

Closed circuit

: the primary network starts and returns to the receiver tank having passed along the complete

perimeter of the area to be served. The pipe used to construct the network is normally of the same section over the

entire length.With this solution it ispossible tohaveanevendistributionof air pressure toeachpoint of consumption,

and it is also possible to isolate sections of the network.

Pos. 3

Grid

: this is the most complex solution but also the most flexible, also the entire distribution network

allows for an increase of the reserve quantity of air.

From the tank

Fig. 6

CAMOZZI

AIRPRODUCTIONANDPREPARATION