Assembly Of The Measurement Fitting/Ball Valve - TESTO 6448 Instruction Manual

Observe before and during assembly
1. Compare the pipe diameters and check the correct size of
2. Before the clamp is assembled, always check the
3. Prepare the compressed air line: eliminate all traces of dirt,
4. Before assembly, mark the position of the clamp to ensure
5. During assembly, ensure that the seals and holder lips
6. Position the tapping clamp and screw the nuts on
7. Tighten the nuts to the specified torque.
4.1.3.

Assembly of the measurement fitting/ball valve

Tools:
- Teflon tape
- Seal ring
- 2x open end spanners 27 mm, 30 mm
1. Wrap Teflon tape around the tapping clamp screw socket.
2. Together with a seal ring, mount the measurement fitting and
screw on by hand.
3. Tighten screw with an open end spanner. Counterhold the
measurement fitting using another open end spanner.
the clamp.
installation position of the sensor and the position of the
clamp.

Preparation, page 17.
rust and grease from the assembly point of the clamp so
that the surface of the pipe is smooth and clean. The seals
and slide plate should be wetted to achieve better
adhesion. Seals, nuts and bolts must not be greased!
a correct fit.
remain clean and that no foreign bodies are found
between the seal and pipe.
manually.
The following torques must be observed:
M14: 85 Nm
M16: 110 Nm
Always carry out a pressure test before pressurising the
clamp.

Checking the clamp leak-tightness, page 22.
4 Initial operation
21