GESTRA BA 46, Original Installation Instructions

Page: 32 / 48

32

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.