NIBCO High-Performance Butterfly Valve User Manual
Page 5
A H E A D O F T H E F L O W
®
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NIBCO INC. WORLD HEADQUARTERS • 1516 MIDDLEBURY ST. • ELKHART, IN 46516-4740 • USA • PH: 1.800.234.0227
TECH SERVICES PH: 1.888.446.4226 • FAX: 1.888.234.0557 • INTERNATIONAL OFFICE PH: +1.574.295.3327 • FAX: +1.574.295.3455
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5
®
Revised 8/22/2013
LCS-7822 CLASS 300 HPBFVs
6. Operation:
6.1 The valve can be actuated by a manual lever, a manual gear operator, an electric actuator, or a pneumatic actuator. Turning
the valve (as viewed from top) clockwise closes the valve; counter-clockwise opens the valve.
6.2 Due to the double offset design of HPBFVs, the differential pressure over the disc can cause sufficient torque to open the
valve spontaneously. For this reason, it is important not to remove lever or actuator from a valve that is or will be pressurized.
6.3 Lever operated valves should always be locked securely in desired throttle plate notch to prevent unexpected disc movement.
Installation, Operation and Maintenance Instructions
NIBCO 6822 and 7822 Series High Performance Butterfly Valves
FLANGE
SPECIFICATION
ASME/ANSI B16.1
CLASS 250 CAST IRON
ASME/ANSI B16.5
CLASS 300 STEEL
CAP SCREW LENGTHS ALLOWS
FOR 1/16” THICK FLANGE GASKETS
VAL
VE SIZE
VAL
VE BODY
THICKNESS
FLANGE
THICKNESS
RECOMMENDED
CAP SCREW
LENGTH
FLANGE
THICKNESS
RECOMMENDED
CAP SCREW
LENGTH
QUANTITY
OF
L:ONG
CAP
SCREWS
REQUIRED PER
VAL
VE
QUANTITY
OF
**
SHORT
CAP
SCREWS
REQUIRED PER
VAL
VE
CAP
SCREW
SIZE & THREAD
PITCH
2”
1.69
0.88
1.50
0.94
1.75
16
5/8”- 11 UNC
2½”
1.84
1.00
1.75
1.06
1.75
16
3/4”- 10 UNC
3”
1.88
1.13
2.00
1.19
2.00
16
3/4”- 10 UNC
4”
2.12
1.25
2.00
1.31
2.25
16
3/4”- 10 UNC
5”
2.31
1.38
2.50
1.44
2.50
16
3/4”- 10 UNC
6”
2.31
1.44
2.50
1.50
2.50
24
3/4”- 10 UNC
8”
2.88
1.63
3.00
1.69
3.00
24
7/8”- 9 UNC
10”
3.25
1.88
3.25
1.94
3.25
32
1”- 8 UNC
12”
3.62
2.00
3.50
2.06
3.50
24
*1-1/8”- 8 UN
3.00
3.00
8
14"
4.62
2.12
4.00
2.19
4.00
32
*1-1/8”- 8 UN
3.00
3.00
8
16"
5.25
2.25
4.50
2.38
4.50
32
*1-1/4”- 8 UN
3.25
3.25
8
18"
5.88
2.38
4.50
2.44
4.50
40
*1-1/4”- 8 UN
3.25
3.25
8
20"
6.30
2.50
4.50
2.56
4.50
40
*1-1/4”- 8 UN
3.50
3.50
8
24"
7.12
2.75
5.00
2.81
5.00
40
*1-1/2”- 8 UN
4.00
4.00
8
*SPECIAL PITCH CAP SCREW THREAD REQUIRED PER MSS SP-68 SPECIFICATIONS
**SHORT SCREWS REQUIRED FOR BLIND TAPPED HOLES NEAREST TO STEM FOR 12” & LARGER SIZE VALVES