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. 113 4 Bonnet 1
6. 113 6 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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