FOR MODELS: JGW, JGR AND JGJ SECTION 1 - DESIGN SPECIFICATIONS & DATA
PAGE 1 - 18 1/01
TABLE 1-12: HOERBIGER VALVE ASSEMBLY FASTENERS - TIGHTENING VALUES
FASTENER
NOMINAL SIZE
INCH - TPI
TYPE
TORQUE,
LB X FT (N·m)
Center Cap Screw
a
b
a. 12 Point Cap Screw Center Fasteners in Valve Assemblies not marked SPL (Spiralock Threads),
must be cleaned with Loctite Safety solvent and locked with one to two drops of Loctite #272. Do
not use petroleum thread lubricants.
b. 12 Point Cap Screws in Valve Assemblies with Spiralock Threads and marked SPL (see Figure
1-9:) are lubricated, both threads and seating surfaces, with a petroleum type lubricant only.
5/16 - 24 12 Point - Steel Grade
8
26 (35)
3/8 - 24 45 (61)
7/16 - 20 62 (83)
5/16 - 24 12 Point- Steel Grade 5 18 (24)
3/8 - 24 32 (43)
7/16 - 20 50 (68)
5/16 - 24 12 Point - Grade B8M -
Stainless Steel
120 lb x in. (13.6)
3/8 - 24 192 lb x in. (21.7)
7/16 - 20 24 (33)
Center Stud - Drake Lock Nut 1/4 - 28 Bottom Half 103 lb x in. (11.6)
Top Half 66 lb x in. (7.5)
5/16 - 24 Bottom Half 168 lb x in. (18.9)
Top Half 96 lb x in. (10.8)
3/8 - 24 Bottom Half 192 lb x in. (21.7)
Top Half 96 lb x in. (10.8)
1/2 - 20 Bottom Half
36 (49)
c
c. 29 lb x ft (39 N·m) for 1/2 - 20 Bottom Half - Drake Lock Nut with non-metallic Plates in Liftwasher
Type Valves.
Top Half 20 (27)
5/8 - 18 Bottom Half 73 (99)
Top Half 40 (54)
3/4 - 16 Bottom Half 130 (176)
Top Half 70 (95)
Peripheral Cap Screws 10 - 32 Hex Socket Head 25 lb x in. (2.8)
12 - 28 43 lb x in. (4.9)
1/4 - 20 110 lb x in. (12.4)
5/16 - 18 176 lb x in. (19.9)
3/8 - 16 21 (28)
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