18
APV_BLV1_GB-0_012020.indd
Ball Valve
APV DELTA BLV1
Instruction Manual: GB - rev. 0
APV
GB
12. Service Instructions BLV1 - H
12.3. Replacement of stem seal
The position numbers refer to the illustration on page 17.
1.
Dismantle ball valve as described.
2.
Take off the handle. For this purpose remove the nut (10) together
with the washer (9).
3.
Remove the gland (8) from the stem (13).
4.
Remove the stem (13) with the stem seal (14) from the inside and
the stem packings (15) from the outside of the body.
5.
Install the new stem seal (14) with the stem (13) through the inside
of the body.
6.
Replace the stem packing (15) from the outside of the body.
7.
Brace the stem packing with the gland (8).
Tightening torques, see 9.3.
8.
Assemble the fitting in its previous position.
9.
Re-tighten the gland (8) after 48 hours.
