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PENBERTHY SERIES K3 GAGECOCKS
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
TABLE 2 - TUBULAR GLASS - RATINGS, ⅝" (16 mm) AND ¾" (19 mm) OD
Vessel tappings ctr. to ctr. Distance
in
inches [mm]
10 [ 254]
15 [ 381]
20 [ 508]
25 [ 635]
30 [ 762]
35 [ 889]
40 [1016]
45 [1143]
50 [1270]
55 [1397]
60 [1524]
65 [1651]
70 [1778]
N/A – Not Available
3 INSPECTION AND PERFORMANCE
CONFIRMATION
3.1 Receiving inspection
Upon receipt of a gagecock set, check all
components carefully for damage incurred in
shipping. If damage is evident or suspected,
do not attempt installation. Notify the carrier
immediately and request a damage inspection.
3.2 User's rating inspection
The user should confirm that:
1. The gagecock set model number and the
pressure/temperature rating conforms to the
description on the user's purchase order.
2. The operating conditions described in
the purchase order agree with the actual
operating conditions at the installation site.
3. The actual operating conditions at the
installation site are within the application data
shown on the applicable technical data sheet
or product proposal.
4. The materials of construction of the
gagecock set are compatible with both
the contained fluid and the surrounding
atmosphere in the specific application.
Safety instructions
If the size, model, or performance data of the
gagecock set as received does not conform with
any of the criteria above, do not proceed with
installation. Contact an authorized Penberthy
distributor for direction.
4 INSTALLATION
Installation should only be undertaken by
qualified personnel who are familiar with this
equipment and have read and understood all
of the instructions in this manual. The user
should refer to applicable technical data sheets
or product proposal to obtain dimensional
information for the specific size and model
gagecock set.
Up to 150°F [66°C]
High pressure
Heavy wall
psig [MPa]
psig [MPa]
410 [2.83]
600 [4.14]
385 [2.65]
600 [4.14]
355 [2.45]
600 [4.14]
300 [2.07]
580 [4.00]
275 [1.90]
550 [3.80]
240 [1.65]
500 [3.45]
210 [1.45]
420 [2.90]
200 [1.38]
360 [2.48]
180 [1.24]
340 [2.34]
150 [1.03]
N/A
140 [0.97]
N/A
125 [0.86]
N/A
100 [0.69]
N/A
4.1 Mounting
1. Prior to actual installation, turn the
handwheel or lever of each gagecock
clockwise until the stem closes against the
seat.
2. Mount upper and lower gagecocks to the
vessel using PTFE tape on all male tapered
pipe thread connections.
3. Tighten vessel connections to a pressure
tight joint making certain that sight glass
connections are aligned vertically and
to vessel centers as called for on the
application specification.
4.2 Sight glass installation
1. Turn upper gagecock counterclockwise
(approx. ⅛ turn).
2. Loosen glass packing nut to insure there is
no compressive force on glass packing.
3. Insert sight glass in upper gagecock sight
glass connection.
4. Tighten upper gagecock to original position
while holding sight glass in position with
upward force to insure its clearing of lower
sight glass connection. Check vertical
alignment of gagecocks.
5. Loosen glass packing nut on lower gagecock
and pull glass down into lower gagecock
sight glass connection to a positive stop.
6. Tighten upper and lower glass packing nuts.
Note: in some circumstances, it may be
necessary to remove the glass packing nut,
glass packing gland and glass packing, and
mount them on the sight glass prior to insertion
of glass in upper and lower gagecock bodies.
See Figure 1 for proper assembly sequences.
From 150°F [66°C] thru 400°F [204°C]
Red line
High pressure
psig [MPa]
psig [MPa]
340 [2.34]
310 [2.14]
310 [2.14]
280 [1.93]
285 [1.97]
265 [1.83]
260 [1.79]
250 [1.72]
230 [1.59]
200 [1.38]
180 [1.24]
170 [1.17]
160 [1.10]
140 [0.97]
120 [0.83]
100 [0.69]
90 [0.62]
Heavy wall
Red line
psig [MPa]
psig [MPa]
345 [2.38]
275 [1.90]
325 [2.24]
265 [1.83]
315 [2.17]
260 [1.79]
300 [2.07]
250 [1.72]
3
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