4. Installing and removing the Ball Valve Type 546
4.1. Opening the protective housing
Procedure: see chapter 3 – step 2
4.2. Removing the Ball Valve Type 546
Procedure:
1. Loosen the union nuts of the ball valve.
2. Take the ball valve out of the inner pipe.
3. Perform revision work according to the instruction manual of the ball valve type 546.
4.3. Re-installing the Ball Valve Type 546
Procedure:
1. Check O-rings on ball valve and grease with a tenside-free, silicone or polyglycol-
based lubricant. (We recommend using new gaskets when re-installing the ball valve.)
2. Fit the Ball Valve Type 546 in the inner pipe, making sure the ball valve is in the
"open" position.
3. Retighten the adjustment bush and union nut in the counter clockwise direction (Fig.
4).
4. Perform pressure test and assembly according to steps 3 and 4 described in
paragraph 3.
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