Instruction manual
11.1 Replacing diaphragm and O-ring
Remove the valve from the pipeline and bring it into horizontal position.
11.1.1 Disassembly
Prior to dismantling: Mark the position of bonnet assembly (top part) to body on the
housing.
Remove the cap from the bonnet assembly (top part), see Fig. 2. To do so, use a screw
driver.
Relax the spring. To do so, turn the spindle counterclockwise (P-), up to the end position.
Fix the body with a suited tool and loosen the bonnet assembly (top part). To do so, turn
the bonnet assembly (top part) counterclockwise, see Fig. 7. During this, the seal sticker
will be broken.
Fig. 7
Remove Pressure piece, springs and retaining ring, see Fig. 8
Optional version 0.3 - 3 bar (4 - 44 psi): one spring
Fig. 8
Maintenance
39