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Description
Transfer stub pump, model 384829, con-
sists of two major components. A differential
air-operated motor and a double-acting re-
ciprocating pump tube.
This low-pressure (1:1 ratio) pump
screws directly onto 1
/
in. NPTF (external)
1
2
threaded standpipe and is designed to trans-
fer fluids compatible with a fluid-wetted
path of carbon steel, aluminum, Fluourelas-
tomer, and Buna-N.
Equipped with a 2 in. NPT (external) bung,
the pump is capable of:
• being mounted to a wall (with the use of a
wall bracket) and be used with an optional
siphon wand kit † Accessories table
• utilizing a suction tube extension (cut to
length by the customer) allowing the
pump to accommodate different size
drums and tanks.† Accessories table
With an extension, threaded at both ends
(† Accessories table), an optional low-level
cut-off valve can be mounted to the pump.
This cut-off valve:
• prevents pumping of air should fluid level
become low.
• is recommended with use of a fluid meter.
For details on the air motor, refer to pages
11–18, † fig. 4 for performance curves.
!
Notice
Prevent pump starvation by using a V-cut, if tube touches
bottom of tank. Refer to page 4 for example.
Specifications
Differential air motor
Piston diameter x stroke
Effective piston area
1)
Air inlet
Maximum air pressure
Pump tube
Fluid outlet
Maximum fluid pressure
Maximum free-flow delivery/minute
Displacement per cycle
Effective piston area of a differential air motor is equal to one-half actual area of piston.
1)
SAE 10 oil at 75 °F (23,8 °C) and 100 psi (6,9 bar) air pressure.
2)
2
1
/
x 4 in. (5,2 x 10,2 cm)
16
1.67 in. (10,8 cm)
/
in. NPTF (internal)
1
4
200 psi (13,8 bar)
1 in. NPTF (internal fitting)
200 psi (13,8 bar)
14 gal./min. (53 l/min.)
2)
10.5 in
(172 cm
)
3
3
Transfer stub pump model with bung adapter and optional low level
cut-off valve
2 in.
(5,1 cm)
diameter
Recommended V-cut extension tube lengths
Drum
16 gal.
Description
(50,5 l)
Tube lengths
17
/
in.
1
4
(438 mm)
2
27 in.
(68,6 cm)
Fluid
outlet
9 / in.
1 2
(68,6 cm)
Tank
Tank
Drum
(bench top)
(Obround)
55 gal
250 gal.
275 gal
(208 l)
(946 l)
(1040 l)
25
/
in.
21
/
in.
33
/
11
3
1
16
4
(652 mm)
(552 mm)
(851 mm)
Fig. 1
in.
2
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