Description
2-3
E1999 Nordson Corporation
All rights reserved
104 330H
Issued 8/99
Manual 1-8
Standard packing glands are Type F. These are suitable for most general
finishing solvent-based coating materials. The pumps can be used with
many different types of materials by changing the packing glands in the
hydraulic section. Refer to your
Packing Gland and Solvent Chamber
Fluid Guide
manual, for a description of packing gland types and their
applications. Refer to the
Parts
section for optional packing gland
partnumbers.
Optional mounting kits are available to mount the pump on a wall, dolly,
5-gallon container, or 55-gallon drum. The mounting kits include a siphon
strainer, air regulator, gauge, siphon hose, filter mounting block (5- and
55-gallon kits), air and hydraulic fittings, and mounting hardware. An
optional air filter/lubricator mounting kit is available which includes an air
lubricator. Optional single or dual circulation valve kits can be connected
to the siphon housing, so that the pumps can be used in circulating
systems. Refer to the
Parts
section for a complete listing of
availableoptions.
See Figures 2-2 and 2-3.
Supply air enters the pump through the air valve (14). The air valve
directs air through the connecting tube (3) to the underside of the air
motor piston (2), causing the piston to rise. Air above the piston is
exhausted through the air valve and muffler. The piston pulls the
hydraulic plunger (5) up with it. The pressure ball check (9) closes and
the siphon ball check (11) opens, allowing material to flow into the
hydraulic section (12). The material above the pressure ball check is
forced out of the pump. As the piston reaches the top of its stroke, the
shifting mechanism (1) is activated, shifting the spool inside the air valve,
so that supply air is directed to the top of the piston and air below the
piston is exhausted.
Air above the air motor piston pushes the piston and hydraulic plunger
down. The siphon ball check closes and the pressure ball check opens.
Material below the pressure ball check is forced up through the plunger
and out the pressure housing outlet fitting.
The solvent chamber (6) is located on top of the high pressure sleeve (8).
The packing glands (7) keep the pumped material from leaking around
the plunger and reducing output pressure. The solvent chamber is kept
partially filled with solvent chamber fluid. To prevent wear on the upper
packing gland, the solvent chamber fluid lubricates the plunger. The
lower packing gland is lubricated by the material being pumped.
3. Packing Glands
4. Optional Equipment
5. Theory of Operation
Suction Stroke
Pressure Stroke
Solvent Chamber and
Packing Glands
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