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Description
Gland packing design
Many industrial type materials (sealants,
adhesives, inks, etc.) display a tendency to
dry out and to build up on the pump plunger
rod. These hard dried out materials cause
the gland packing to wear rapidly, resulting
in leakage and ultimate pump failure.
The second problem is the gland seal
exposure to high pressure and in particular,
to pressure fluctuation during pump
operation (stroke change over).
The gland packing design of Pile Driver III
pumps addresses both problems:
Externally, a special spring type metal
wiper (5) scrapes built-up and dried material
from the pump plunger before it is pulled
through the gland packing on the down
stroke. In order to help the metal wiper work
longer and more efficiently, the lube well of
the pump should be filled with a fluid
compatible with the material being pumped.
NOTE
Do not fill the lube well to full capacity,
as the reciprocating movement of the
pump may draw fluid into the air motor.
Internally, a special protection sleeve (9)
with concentric grooves creates a labyrinth
path which reduces the effects of internal
pressure and stroke change over fluctuation
on the gland seal. In addition, a second
internal wiper limits gland seal exposure to
the pumped material.
The combination of the metal wipers and
the protection sleeve results in longer gland
seal life and prevents leakage.
Product specifications
Pump stroke
Output per cycle
Operating temperature
Maximum recommended speed
Output at 75 cycles/min
Wetted part materials
Weight
Model chart
Pump model
Air motor
1)
Ratio
2321
86810
20:1
84808
13:1
84806
7:1
84804
3:1
84803
1.5:1
1)
Refer to air motor owner/operator manual 404192.
6
6 in (152 mm)
46 in
3
(754 cm
3
)
–30 to +160 °F
(–34 to +71 °C)
75 cycles/minute
14.9 gallons/minute (56.4 liter/min)
Carbon steel, bronze, polyurethane, nitrile
76 lbs (34.5 kg)
Maximum delivery pressure
Maximum air pressure
2 000 psi (138 bar)
100 psi (7 bar)
1 300 psi (90 bar)
100 psi (7 bar)
700 psi (48 bar)
100 psi (7 bar)
600 psi (41 bar)
200 psi (14 bar)
300 psi (21 bar)
Table 1
Table 2
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