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Appendix E—Parts Details for Models B166B- .75 and B166B-1
O-ring Code
A Buna-N
B Neoprene
®a
D Viton
®a
G Ethylene
propylene
K Kalrez
®a
E . Parts Details
17
13
12
11
10
8
9
14
15
16
5
6
7
4
Bolt torque
25 ft•lbs
3
2
1
Ref.
No.
Part No.
Description
Qty
1.
2911
Adjusting screw
1
2.
7101-037NC01A
Hex nut
1
3.
2732
Center head bolt gasket
1
4.
7002-037NC087A Socket head bolt
4
5.
1134
Bonnet
1
6.
1136
Spring seal
1
7.
2-217
b
O-ring
1
8.
1138
Relief spring (25–60 psi)
1
1193
Relief spring (50–150 psi)
1
9.
1193
Relief springs (100–225 psi)
1
1313
1
10.
1251
Valve
1
Ref.
No.
Part No.
Description
Qty
11.
1139
Ball spring (standard)
1
2035
c
Ball spring (heavy duty)
12.
1137
Ball
1
13.
2-224
b
O-ring
1
14.
3442
Pipe plug
1
15.
7012-006SF025C
Pan HD phillip 6-32 x 1/4"-
Type F SS
2
16.
2030
Nameplate
1
17.
1200
3/4" Body (B166B-.75)
1
1200-1
1" Body (B166B-1)
1
a
Registered trademark of the DuPont company.
b
_ denotes O-ring code. See chart above.
c
Used with relief springs 1193 and 1313 (100–225 psi).
13
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