Vaisala K-PATENTS PR-23 AX Series, Instruction Manual

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172 PR-23 instruction manual
11.60
295
8.86
225
Side view
Top view
1.34
34
5.01
127
10.78
274
1.93
49
500 - 1000 [2 - 3 ft]
1000 - 1500 [3 - 6 ft]
Floor or
working platform
Figure 11.5 Mounting on a horizontal pipe
11.4.1 Welding isolation valve to pipe
For the Safe-Drive™ Isolation valve, two holes – 50 mm (2") and 25 mm (1") – are
drilled to the pipe and the bridge between the holes is then removed. To help you
place the holes correctly, Vaisala delivers with the valve an installation guide sticker
(see Figure 11.6).
Welding steps (see Figure 11.7 or Figure 11.8):