User's Manual

L12100
Page 17
INJECTORS AND MANIFOLDS
DESCRIPTION
Oil injectors in two types and grease injectors in one type (Figure
11) are available for use in the lubrication system. The fi rst, a
manifold injector, is designed specifi cally for mounting in the
LubriSystem manifold. The second, a bearing point injector, is
designed to be mounted at the lubrication point and does not
require a manifold.
Manifold injectors are available for oil or grease and are positive-
displacement, spring-loaded devices used in the LubriSystem
manifold. These injectors are available in six displacements,
from 0.0015 to 0.024 cu.in. (0.025 to 0.039 cm
3
) of lubricant per
injector cycle. The choice of displacements fi ts a wide range of
applications.
Input to the injector is from the manifold. Output is into lines
delivering the lubricant to a specifi c lube point. Injectors are
available in either an aluminum alloy or stainless steel. The
inlet port of all injectors utilizes a 1/2-24 in tubing. An indicator
adaptor is available to change 3/16 in tube connection to 1/8
in for use with 1/8 in tubing. Stainless steel injectors come
standard with 1/8 in fi ttings.
Bearing point injectors are positive-displacement, spring-loaded
devices that can be mounted directly at the lubrication point.
Figure 11. Injectors and Manifolds
Bearing point injectors are available in fi ve output capacities,
from 0.0015 to 0.012 cubic inches (0.025 to 0.2 cm
3
) of
lubricant per injector cycle.
Input to the bearing point injector is from the pump, using a
parallel branch from the main line. Bearing point injectors utilize
a stainless steel body. The inlet port of this type of injector is
1/8-27 NPSF. The outlet port is a standard 1/8-27 NPTF male
thread for attachment at the lubrication point.
Both injector styles are designed with a unique feature, allowing
output capacity to be changed using adjustment spacers. This
reduces the number of replacement injectors to be stocked. It
also permits increasing/decreasing an injector’s lube delivery
capacity, in order to deal with unexpected needs to change the
amount of lubricant delivered to lube points after installation.
Positive-displacement injectors dispense a precisely metered
amount of oil or grease to a lube point with every lube cycle.
Injectors are inexpensive and disposable. They should be
replaced if not functioning properly. If an injector is to be
disassembled for purposes of adding or deleting output
adjustment spacers, great care must be taken to make sure
both the inside and outside of the injectors are dirt-free when
reassembled in the system.
An injector cycle indicator is available for use in system
diagnostics. This cycle indicator can be attached to the output
end of aluminum injectors. When the pump cycles, and the
indicator is pressurized, the stem of the indicator extends. When
the indicator is not pressurized the indicator stem is not visible.
These indicators give an immediate visual indication that the
injector has cycled. Injector cycle indicators are not available for
stainless steel or bearing point injectors.
Manifolds are available in two types of materials: aluminum and
stainless steel. The number and confi guration of outlet ports
can also be ordered to meet the specifi c needs of the system.
Refer to pages 21, 22 and 23 for more specifi c information on
dimensions and confi gurations of manifolds.
Aluminum manifolds are available with 4 outlet ports in an
in-line, single-sided confi guration. They are also available with
8 outlet ports in an in-line, double-sided confi guration. These
manifolds are dimensionally interchangeable with many of those
used on other single-line parallel injector systems.
Stainless steel manifolds are available with 1, 2, 3, or 4 outlet
ports in an in-line confi guration. These also interchange with
others in common use.
Plugs are available to close off any port not required. A torque
of only 1 to 2 ft-lbs is required to provide a leak tight connection
between the injectors and manifold.