2
PENBERTHY
MODELS GL AND GH GAS OPERATED JET PUMPS
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
2 INTRODUCTION
2.1 Features and specifications
Penberthy models GL and GH gas operated jet
pumps are designed primarily for exhausting,
evacuating and priming using steam or air as
the operating medium; and for pumping water
using steam as the operating medium. They can
also be used with other gases as the operating
medium.
2.2 Design ratings at maximum and minimum
operating temperatures (see Table 1)
To determine the maximum allowable working
pressure for a specific temperature within
the design limits stated in Table 1, the user
should refer to relevant data sheets or, when
provided, the specifically stated design limits on
a product proposal.
TABLE 1 - DESIGN RATINGS AT MAXIMUM AND MINIMUM OPERATING TEMPERATURES
Material
Bodies
Nozzles
Iron
80 psig [550 kPaG] at -20°F [-29°C] to +150°F [66°C]
50 psig [340 kPaG] at + 350°F [177°C]
200 psig [1380 kPaG] at -20°F [ -29°C] to +400°F [204°C]
Bronze
200 psig [1380 kPaG] at -20°F [-29°C] to +150°F [66°C]
125 psig [860 kPaG] at + 400°F [204°C]
200 psig [1380 kPaG] at -20°F [ -29°C] to +400°F [204°C]
316 SST
200 psig [1380 kPaG] at -150°F [-101°C] to +150°F [66°C]
125 psig [860 kPaG] at + 400°F [204°C]
200 psig [1380 kPaG] at -150°F [-101°C] to +400°F [204°C]
1 ABOUT THE MANUAL
This manual has been prepared as an aid and
guide for personnel involved in installation or
maintenance. All instructions must be read and
understood thoroughly before attempting any
installation, operation or maintenance.
IMPORTANT
Emerson does not have any control over the
manner in which its jet pump is handled, installed
or used. Emerson cannot and will not guarantee
that a jet pump is suitable or compatible for the
user's specific application.
WARNING
Failure to follow any instruction could possibly
result in a malfunction of the jet pump with
resulting sudden release of pressure, severe
physical injury or property damage.
2.3 Application data
The model GL is intended to operate between
60 psig (410 kPaG) and 150 psig (1030 kPaG)
steam pressure against moderate or zero
discharge head. The model GH is intended
to operate between 20 psig (140 kPaG) and
150 psig (1030 kPaG) steam pressure against
moderate to substantial discharge head.
Note:
For specific application data within the
above ranges, the user should consult the
product proposal for the specific model and
size jet pump, or should request the supply of
the applicable technical data sheet.
WARNING
Under no circumstances should these design
ratings or application data be exceeded.
Exceeding design ratings or application data may
cause severe physical injury or property damage.
3 INSPECTION AND PERFORMANCE
CONFIRMATION
3.1 Receiving inspection
Upon receipt of the jet pump, 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 jet pump size (cast on side of body) and
model designation (stamped on nozzle hex
flats) 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 relevant technical data
sheet or product proposal referred to above.
4. The materials of construction of the
jet pump are compatible with both the
contained fluid and the surrounding
atmosphere in the specific application.
IMPORTANT
If the size, model or performance data of the jet
pump as received does not conform with any of
the criteria above, do not proceed with installation.
Contact an authorized Penberthy distributor for
assistance.
