+GF+ DIASTAR Six Manual De Instrucciones página 36

Pneumatic diaphragm valve DIASTAR
11. Tighten housing nut with strap wrench/special tool until...
a gap dimension of 0.5mm to 1mm is reached between the valve body and the housing nut...
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and the semicircular indicator on the housing nut is aligned with the friction lock on the valve body.
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Note: For valves with built-in stroke limitation, it is recommended to readjust the valve after reassembly.
36
Operating Instructions