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The cylinder block (1) crankshaft housing (2), and injector head (3) comprise
the body of the Smith MEASUREMIX Model R-6. The water inlet (4) for connection to the water source is
threaded to take 1 1/2-inch pipe. No strainer is supplied, but a strainer is available as optional equipment
and must be used if there is any sand, silt, or other hard abrasive material in your water. The fertilizer
intake tube (5) is made of translucent plastic tubing, allowing visual flow check. The intake tube is
5/8-inch diameter and 10 feet long, but can be supplied longer if desired. The double-ball IN check valve
(6) is shown, as well as the double-ball OUT check valve (7). The outlet (8) for
discharge of water-fertilizer mixture has a 1 1/2-inch pipe size. The priming valve (9) lets water
into the injector system for easy priming of the injector pump and quick washing of the injector system after
operation. The priming valve (10) for the dip tube is also used for shutting off the fertilizer supply during
periods when the machine is not in use. The crankshaft windows (11) are made of clear plastic, and are used
to observe motion of the crankshaft to be sure it is turning. The check valve insert (12) allows for easy
O-ring replacement.
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Standard Proportion 1 to 200
Maximum Water Flow Rate 40 GPM
Minimum Water Flow Rate 10 GPM
Connection, Hose or Pipe 1-1/2-inch
The Smith Model R-6 MEASUREMIX is designed for use where the flow of water is between 10 gallons per minute
and 40 gallons per minute. The Model R-6 will operate, however, at 5 GPM, with some sacrifice of accuracy.
The Model R-6 weighs approximately 150 pounds, and is usually installed permanently in a 1 1/2-inch pipe line,
but can be mounted on a wagon or cart (not supplied by manufacturer). This model MEASUREMIX is generally specified
for medium greenhouses and landscape projects. The R-6 is designed for intermediate use between R-4 and R-8
applications. The Smith Model R-6 MEASUREMIX is 14 inches high, 8 inches wide, and 20 inches long, and weighs 150
pounds (165 pounds shipping weight). The connections, both inlet and outlet, are threaded for 1 1/2-inch pipe. The
machine runs smoothly and quietly and should be bolted to a platform or base plate up to 3/4 inches thick. Bolts
are spaced at four corners of a rectangle, measuring 6 7/8 to 9 1/4 inches. One-half inch mounting bolts are
provided.
STANDARD OPTION
Option W: Includes all stainless steel double-ball check valves with all other valves and fittings
of stainless steel. Recommended for consistent use with usual inorganic mixtures. Contains no rubber parts.
ACID OPTION (SPECIAL)
Option P: Contains single-ball check valves with plastic housings and acid-resistant rubber balls.
All other items in contact with the fluid are various types of acid-resistant materials. Recommended
for units injecting any concentration of sulfuric acid for pH control. (Phosphoric acid may be
satisfactorily injected with stainless steel options.) Usually installed as one injector of a two-injector
option (see below). For more details write for special sheet AM-3.
PESTICIDE/FUNGICIDE OPTION
Option I: Includes all stainless steel double ball check valves and fittings. Contains no plastic
working parts. Recommended for consistent use with the insecticides/fungicides that contain hydrocarbon
base harmful to PVC plastics.
Special proportions: Any of the single-injector options listed above or the two injector options
listed below, may be provided with special proportions. Special proportions always available for the R-6
model are 1:50, 1:100, and 1:500, in addition to the standard 1:200 proportion. For availability of other
special proportions, write factory.
Two-injector options: All R-6 machines may be provided with two-injector options. May have one
option on one side, another on the other side. Proportions may be different on each side.
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