Positioning Of Specific Models - Emerson Penberthy Installation, Operation And Maintenance Instructions

PENBERTHY SIGHT FLOW INDICATORS
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
TABLE 3 - BOLT TORQUE VALUES
Neoprene
Unit size Buna-N, Viton
in inches Tempered glass Tempered glass Tempered glass Tempered glass Tempered glass
½ and ¾ 8 to 10
(11 to 14)
1 8 to 11
(11 to 15)
1¼ and 1½ 9 to 12
(13 to 17)
2 17 to 20
(23 to 28)
2 ½ and 3 41 to 44
(56 to 60)
4 70 to 73
(95 to 99)
6 and 8 149 to 153
( 202 to 208)
4.1 Effect of related piping and precautions
1� Do not impose system piping loads on dual
window sight flow indicator� Unit is not
designed to be a load bearing component�
Piping must be supported and aligned with
sight flow indicator connections to reduce
the possibility of stresses imposed on
the unit�
2� Locate the dual window sight flow indicator
where it can be easily seen�
3� Locate the dual window sight flow
indicator away from areas where objects
may be dropped, thrown, or generally
allowed to effect contact with the viewing
window glass�
4� Locate the dual window sight flow indicator
so it is protected from dust, grit, tools, and
any other objects which may scratch, chip,
or break the viewing window glass�
5� Locate the dual window sight flow indicator
so it is protected from external thermal
shock, such as would be imposed on a
unit in a high temperature application
when exposed to a cold air blast or a cold
water wash�
WARNING
Failure to mount, protect, and locate the dual
window sight flow indicator as described within
items 1 through 5 above can cause serious
personal injury or property damage.
Gasket material (ft·lb (Nm))
,
®
Teflon Grafoil
® ®
10 to 12 9 to 11
(14 to 17) (13 to 15)
12 to 15 10 to 13
(17 to 21) (14 to 18)
13 to 16 11 to 14
(18 to 22) (15 to 19)
25 to 28 22 to 25
(34 to 38) (30 to 34)
61 to 64 53 to 56
(83 to 87) (72 to 76)
98 to 101 N/A
(133 to 137)
217 to 221 N/A
(295 to 300)

4.2 Positioning of specific models

1� Flapper models may be mounted in a
horizontal plane provided the flapper closes
over the inlet port by gravity when there is
no flow�
2� Plain or rotator models may be mounted in
any acceptable position�
3� Drip tube models should be mounted
in a vertical plane with the flow arrow
pointing downward�
4� Ball models should be mounted in a
horizontal or vertical plane with the flow
arrow pointing upward�
4.3 Bolt torque
Refer to Table 3
IMPORTANT
Prior to any bolt torque checks, the dual window
sight flow indicator must be relieved of all
pressure or vacuum, have been allowed to reach
ambient temperature, and drained or purged of
all fluids.
Bolt torque is vital to the proper operation of
a dual window sight flow indicator� Gaskets
compress over a period of time; therefore, bolt
torque values must be checked, and brought up
to those recommended in Table 3 by following
the bolt tightening sequence in Figure 1�
PCTFE
(KEL-F ) IFG-5500
® ®
10 to 12 18 to 21
(14 to 17) (24 to 29)
12 to 15 21 to 25
(17 to 21) (29 to 34)
13 to 16 23 to 26
(18 to 22) (31 to 35)
26 to 29 44 to 47
(36 to 40) (60 to 64)
63 to 66 110 to 113
(86 to 90) (149 to 153)
101 to 104 170 to 173
(137 to 141) (231 to 235)
223 to 227 387 to 391
(303 to 308) (525 to 530)
FIGURE 1
Bolt tightening sequence
Sizes ½" through 1"
®
1
4
Bolt tightening sequence
Sizes 1¼" through 8"
1
5
8
4
3
2
3
7
6
2
4