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VALVE LUBRICATION
ValvTechnologies metal-seated ball valve requires NO lubrication.
Re-tightening of body (with system de-pressurized) and gland packing bolting
is permissible, if leakage occurs in these areas.
Required Torque values are given in Tables 1 & 2.
The use of Copper-Based Anti-Seize Grease for stud lubrication and Molyb-
denum Disulfide Anti-Seize Grease for packing lubrication is recommended.
Bolt Tension may be decreased to 25% shown in Tables 1 & 2 when other
or no lubrication is used.
TORQUE ft/lbs (Nm)
B7 OR
EQUAL
B8M OR EQUAL
5/16 (8) 12 (16) 4 (5)
3/8 (10) 18 (24) 6 (8)
7/6 (30) 29 (39) 9 (12)
1/2 (13) 45 (61) 13 (18)
9/16 (14) 50 (68) 19 (26)
5/8 (16) 85 (115) 26 (35)
3/4 (19) 150 (203) 45 (61)
7/8 (22) 240 (325) 70 (95)
1 (25) 355 (481) 110 (149)
1-1/8 (29) 510 (691) 155 (210)
1-1/4 (32) 700 (949) 210 (285)
1-3/8 (35) 950 (1288) 290 (393)
1-1/2 (38) 1250 (1695) 370 (502)
1-5/8 (41) 1600 (2169) 480 (651)
1-3/4 (44) 2060 (2793) 500 (678)
1-7/8 (48) 2500 (3390) 750 (1017)
2 (51) 3000 (4067) 900 (1220)
3 (76) 10300 (13965) 3100 (4203)
3-1/2 (89) 16500 (22371) 5000 (6779)
BOLT
SIZE -
INCHES
(mm)
TABLE 1
BODY BOLT TORQUE VALUES
TABLE 2
GLAND TORQUE
STUD
DIAMETER
NOMINAL
BALL
TORQUE VALUE in/lb (Nm)
THREAD
PITCH-
in (mm)
INSIDE
DIAMETER-
in (mm)
GLAND
TORQUE
NEVER
EXCEED
5/16 - 18 (8) 5/8 (16) 48 (5.4) 60 (6.8)
5/16 - 18 (8) 1-1/16 (27) 48 (5.4) 60 (6.8)
3/8 - 16 (10) 2-1/8 (54) 84 (9.5) 105 (11.9)
3/8 - 16 (10) 3-1/16 (78) 84 (9.5) 105 (11.9)
3/8 - 16 (10) 4-1/16 (103) 84 (9.5) 105 (11.9)
7/16 - 14 (11) - 132 (14.9) 165 (18.7)
1/2 - 13 (13) 5-1/8 (13) 204 (23.1) 225 (25.5)
1/2 - 13 (13) 6-1/16 (154) 204 (23.1) 225 (25.5)
9/16 - 12 (14) - 252 (28.5) 315 (35.6)
5/8 - 11 (16) - 396 (44.8) 495 (56.0)
NOTE: Due to the ValvTechnologies valve’s metal-to-
metal sealing surface operating torques are consid-
erably higher than comparable soft seated ball valves.
OPERATION
Note: Values are for B8M, Class 1 bolting.
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