GESTRA BA 46 - Page 32

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 Clean all removed parts and the body.
 Inspect all parts to ensure they are in perfect
condition.
 Replace damaged parts.
 Insert the seat bushing (21) in the body (3) using
adhesive.
The adhesive must have the same properties as
Loctite
®
620.
 Insert the two stepped bushings (20) in the
body.
 Insert the anti-wear bushing (19) in the body.
 Position the anti-wear bushing so that the
retaining groove points towards the hole for the
locking screw.
 Insert the sealing ring (24).
 Hand-tighten the locking screw (23).
The torque for the locking screw varies depending
on the equipment:
 For models with DN 15 to DN 32, the required
torque is 5 Nm.
 For models with DN 40 and DN 50, the required
torque is 11 Nm.
 Tighten the locking screw to the specified
torque.
 Position the guide bushing (18) so that the
retaining groove points towards the locking
screw.
 Insert the guide bushing (18).
 Insert the new stuffing box comprising the
packing ring (26) and four wipers (17) as
shown.
 Coat the thread and sealing surface of the
nozzle needle (25) with lubricant.
The lubricant must have the same properties as
WINIX
®
2010.
 Insert the nozzle needle in the body.
 Screw the nozzle needle into the guide bushing
by two full turns.
 Position the spring bushing (16) on the nozzle
needle.
 Position the disc springs (27) on the spring
bushing in the position shown.