Fisher HPA Instruction Manual page 13

Instruction Manual
D101634X012
Table 9. Valve Stem Connection Torque and Drill Size for Pin Hole
VALVE SIZE,
NPS
HP HPA
12.7
1 1
19.1
12.7
2 2, 3 19.1
25.4
12.7
19.1
3 4
25.4
19.1
4 6
25.4
19.1
25.4
6 8
31.8
1. HPAS available in NPS2 only.
CAUTION
Failure to comply with good bonnet‐to‐body bolting practices and the torque values shown in table 8 may result in damage
to the valve. Cheater bars or slug wrenches should not be used for this procedure.
Hot torquing is not recommended.
Note
Stud(s) and nut(s) should be installed such that the manufacturer's trademark and material grade marking is visible, allowing easy
comparison to the materials selected and documented in the Emerson/Fisher serial card provided with this product.
WARNING
Personal injury or damage to equipment could occur if improper stud and nut materials or parts are used. Do not operate or
assemble this product with stud(s) and nut(s) that are not approved by Emerson/Fisher engineering and/or listed on the
serial card provided with this product. Use of unapproved materials and parts could lead to stresses exceeding the design
or code limits intended for this particular service. Install studs with the material grade and manufacturer's identification
mark visible. Contact your
and approved parts is suspected.
14. Lubricate the stud threads and the faces of the hex nuts (key 14) with anti‐seize lubricant (not necessary if new
factory prelubricated hex nuts are used). Replace the hex nuts and tighten them finger‐tight. Stroke the valve
several times to center the trim. Torque the nuts in a crisscross pattern to no more than 1/4 of the nominal torque
value specified in table 8.
VALVE STEM
DIAMETER
mm Inches
1/2
3/4
1/2 HPD, HPAD, HPS, HPAS
3/4
1
1/2
3/4
1
3/4
1
3/4
1
1‐1/4
Emerson sales office or Local Business Partner immediately if a discrepancy between actual parts
DESIGN
HPS, HPAS
HPS, HPAS
(1)
, HPT, HPAT
(1)
HPS, HPAS
HPD, HPAD, HPT, HPAT
(1)
HPS, HPAS
HPD, HPS, HPT, HPAD, HPAT
HPD, HPS, HPT, HPAD, HPAT
HPD, HPS, HPT, HPAD, HPAT
HPD, HPT, HPAD, HPAT
HPD, HPT, HPAD, HPAT
HPD, HPT, HPAD, HPAT
HPD, HPT, HPAD, HPAT
HPD, HPT, HPAD, HPAT
HP and HPA Valves
VALVE STEM
CONNECTION TORQUE
(MINIMUM‐MAXIMUM)
NSm LbfSft
81 ‐ 115 60 ‐ 85
237 ‐ 339 175 ‐ 250
81 ‐ 115 60 ‐ 85
237 ‐ 339 175 ‐ 250
237 ‐ 339 175 ‐ 250
420 ‐ 481 310 ‐ 355
81 ‐ 115 60 ‐ 85
237 ‐ 339 175 ‐ 250
420 ‐ 481 310 ‐ 355
237 ‐ 339 175 ‐ 250
420 ‐ 481 310 ‐ 355
237 ‐ 339 175 ‐ 250
420 ‐ 481 310 ‐ 355
827 ‐ 908 610 ‐ 670
July 2017
DRILL SIZE
FOR PIN
Inches
1/8
3/16
1/8
3/16
1/8
1/4
1/8
3/16
1/4
3/16
1/4
3/16
1/4
1/4
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