172-65175MA-13 (COS Pressure Reducing Valve) 16 Feb 2022
24
5. Standard fastening torque and the distance across flats for the tools to be
used are as follows:
Part
COS
Connection Size
Distance Across
Flats
Tightening Torque
(mm)
(in)
(mm)
(in)
(N
m)
(lbf
ft)
Bolts (Spring Housing)
All
16/17*
(
5
/
8
,
21
/
32
)*
40
(29)
Pilot Valve Seat
All
19
(
3
/
4
)
70
(51)
Screen Holder
All
24
(
15
/
16
)
40
(29)
Bolts (Pilot Body)
15
– 40 (
1
/
2
– 1
1
/
2
)
16/17*
(
5
/
8
,
21
/
32
)*
60
(44)
50
(2)
19
(
3
/
4
)
70
(51)
65
– 100 (2
1
/
2
– 4)
16/17*
(
5
/
8
,
21
/
32
)*
60
(44)
Bolts (Body/Pilot
Cover)
65, 80
(2
1
/
2
, 3)
19
(
3
/
4
)
70
(51)
100
(4)
24
(
15
/
16
)
150
(110)
Bolts
(Trap Cover/Trap Body)
15
– 40 (
1
/
2
– 1
1
/
2
)
16/17*
(
5
/
8
,
21
/
32
)*
60
(44)
50
– 80
(2
– 3)
19
(
3
/
4
)
70
(51)
100
(4)
24
(
15
/
16
)
150
(110)
Main Valve Seat
15, 20
(
1
/
2
,
3
/
4
)
36
(1
7
/
16
)
100
(73)
25
(1)
41
(1
5
/
8
)
125
(92)
32, 40
(1
1
/
4
, 1
1
/
2
)
60
(2
3
/
8
)
250
(185)
50
(2)
70
(2
3
/
4
)
300
(220)
(65
– 100 mm Hex Bolt)
65, 80
(2
1
/
2
, 3)
13
(
1
/
2
)
30
(22)
100
(4)
16/17*
(
5
/
8
,
21
/
32
)*
40
(29)
Bolts (Float Cover)
15, 20
(
1
/
2
,
3
/
4
)
8
(
5
/
16
)
7
(5)
25
– 40 (1 – 1
1
/
2
)
10
(
3
/
8
)
10
(7)
50
– 100
(2
– 4)
13
(
1
/
2
)
20
(15)
Trap Valve Seat
15, 20
(
1
/
2
,
3
/
4
)
11
(
7
/
16
)
10
(7)
25
– 40 (1 – 1
1
/
2
)
13
(
1
/
2
)
15
(11)
50
– 80
(2
– 3)
16/17*
(
5
/
8
,
21
/
32
)*
40
(29)
100
(4)
19
(
3
/
4
)
55
(40)
* Size depends on bolt standard
(1 N
m
10 kg
cm)
NOTE: -If a torque greater than that recommended is applied, the body or components may
be damaged.
-Coat all threaded portions with anti-seize.
-If drawings or other special documentation were supplied for the product, any torque
given there takes precedence over values shown here.
