Instruction manual

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Instruction Manual
D500248X012
A31D Valve
April 2014
5
Table 2. Stud Bolt and Cap Screw Chart for Double-Flange Valves
VALVE SIZE, NPS
A31D, CL150, ISO 5752 BUTTERFLY SHORT SERIES
3 4 6 8 10 12 14 16 18 20 24
No. of Through Holes 8 8 8 8 16 16 16 24 24 32 32
No. of Tapped Holes --- 8 8 8 8 8 8 8 8 8 8
Size-Dia. Inch & Thread 5/8 - 11 5/8 - 11 3/4 - 10 3/4 - 10 7/8 - 9 7/8 - 9 1-8 1-8 1-1/8 1-1/8 1-1/4 - 8
No. of Stud Bolts 8 8 8 8 16 16 16 24 24 32 32
A-Length of Stud Bolts
(1)
,Inch 4 4-1/2 4-3/4 4-3/4 5-1/2 5-1/2 5-3/4 5-3/4 6-1/4 6-1/2 7-3/8
No. of Cap Screws --- 8 8 8 8 8 8 8 8 8 8
B-Length of Cap Screws
(2)
,Inch --- 2-1/2 2-1/2 2-3/4 3 3 2-3/4 3 3-1/4 3-1/4 3-3/4
No. of Heavy Hex Nuts 16 16 16 16 32 32 32 48 48 64 64
VALVE SIZE, NPS
A31D, CL300, ISO 5752 BUTTERFLY LONG SERIES
3 4 6 8 10 12 14 16 18 20 24
No. of Through Holes 16 16 24 24 32 24 32 32 40 40 40
No. of Tapped Holes --- --- --- --- --- 8 8 8 8 8 8
Size-Dia. Inch & Thread 3/4 - 10 3/4 - 10 3/4 - 10 7/8 - 9 1-8 1-1/8 - 8 1-1/8 - 8 1-1/4 - 8 1-1/4 - 8 1-1/4 - 8 1-1/2 - 8
No. of Stud Bolts 16 16 24 24 32 24 32 32 40 40 40
A-Length of Stud Bolts
(1)
,Inch 4-1/2 5 5-1/4 6 6-3/4 7-1/4 7-1/2 8 8-1/2 8-3/4 9-3/4
No. of Cap Screws --- --- --- --- --- 8 8 8 8 8 8
B-Length of Cap Screws
(2)
,Inch --- --- --- --- --- 4-3/4 4-3/4 4-1/4 4-1/4 4-1/2 5
No. of Heavy Hex Nuts 32 32 48 48 64 48 64 64 80 80 80
1. Based on
1/8-inch gasket
2. Optional Alternative for Cap Screws
Valve Orientation
The valve can be installed in any orientation, however, it is recommended that the valve drive shaft be horizontal and
the actuator vertical.
Before Installing the Valve
WARNING
The edges of a rotating valve disk (key 2, figure 9, 10, or 11) close with a shearing, cutting motion. To avoid personal injury,
keep hands, tools, and other objects away from the disk while stroking the valve.
If the A31D valve is equipped with a fail-open actuator, cycle the valve into the fully closed position. Ensure the valve
cannot open during installation by using travel stops, a manual actuator, a constant supply pressure to the pneumatic
actuator, or other steps as necessary.