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2.2 Connection to the piping system – Flange connection

Caution!

For connecting the flow meter to the piping system, the following must be observed:

• Pipes, fittings, etc. must be suitably supported so that additional weight and vibrations are not

transmitted to the flow meter!

• Suction and discharge lines must always be connected without tension. The piping must be rerouted

if an offset cannot be compensated by appropriate means!

Flange connection type ST, SL, LM and UN

Mounting steps flow meter

type ST, SL, LM and UN

1. Mount the check valve (option)

and filter screen into the inlet

(arrow)

2. Push the o-ring onto the collar

bush. The non-return valve may

be only installed together with

a strainer.

3. Place the wing nut onto the

collar bush and screw it with

the flow meter. Wet the sealing

surfaces and o-rings with a

suitable lubricant.

4. Insert the seals into the screw

sockets

5. Screw the screw sockets onto

the flow meter and collar bush

6. Insert the seals into the screw

sockets

7. Mount the flange

8. Screw on the flanged bush

Flange connection type VA I

Mounting steps flow meter

type VA I:

1. Place the flange plate onto the

collar bush

2. Insert the seal into the collar

bush

3. Screw on the collar bush to the

flow meter

B. Basic flow meter

Lutz ST User Manual

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