172-65694MA-01 (BD800) 25 Jul 2018
11
Table of Tightening Torques
Part Name
Torque
Distance Across Flats
N
⋅
m
(lbf
⋅
ft)
mm
(in)
Bonnet Nut
80
(59)
17
(
21
/
32
)
Gland Holder
60
(44)
22
(
7
/
8
)
Valve Seat
80
(59)
21
(
13
/
16
)
NOTE: -Coat all threaded portions with anti-seize.
-If drawings or other special documentation were supplied for the
torque given there takes precedence over values shown here.
(1 N
⋅
m
≈
10 kg
⋅
cm)
Replacing the Gland Packing
1. Remove the valve stem then the gland holder from the bonnet.
Gland Holder
Bonnet
Valve Stem
2. Insert gland packing removal tool (A) into the bonnet, then screw removal tool (B) into
removal tool (A).
When removal tools (A) and (B) are inserted to the bonnet, the gland packing is caught by
the tip of removal tool and can be removed by lifting up the removal tool. Make sure to
remove dust and scale from inside the bonnet.
Removal Tool (B)
Removal Tool (A)
Gland
Packing
3. Reinsert the valve stem into the bonnet, then insert new gland packing into the bonnet.
Align the gland packing so that the stickers face each other. After the gland packing is
inserted, place removal tool (A) on top of the gland packing, and push the gland packing
into position by tapping on removal tool (A) with a plastic mallet. Remove removal tool (A),
replace the gland holder and tighten it to the proper torque.
Removal Tool (A)
Gland Packing
Plastic Mallet
Removal Tool (A)
