Mid-West Instrument
Founded
in 1958, Mid-West Instrument is one of the leading designers
and manufactures of differential pressure gauges and switches
in the U.S. Products offered by Mid-West Instrument include
differential pressure gauges and switches, DELTA-TUBE pitot
tubes, portable flow measurement and backflow prevention
device test kits, and pulsation snubbers and pressure limiting
valves. All products manufactured by Mid-West Instrument
are produced in the United States and backed by a five-year
warranty.
Mid-West
Instrument carries a variety of pressure gauges. The main
types of gauges produced are the Bourbon Tube, bellows,
piston, and diaphragm.
 Diaphragm/bellows
differential pressure gauges provide a simple, compact
and accurate way to indicate pressure at low ranges.
Working pressure on diaphragm/bellows gauges range from
500 to 6000 psig with over-range protection. Differential
pressure ranges are from 0-10" H2O to 0-400"
H2O. These gauges are available in Aluminum, Brass,
Carbon Steel, or 316 Stainless Steel housings. The diaphragm/bellows
are available in Copper-Alloy, Stainless Steel and a
wide variety of elastomers. Enclosures on specific models
include a cast aluminum explosion proof housing or cast
aluminum with plastic bezel weatherproof housing. |
 The
Bourbon Tube gauge also provides a simple, compact and
accurate means of measurement with protection against
over-range pressure by a bi-directional relief valve.
Rated working pressure on the Bourbon Tube gauges range
from 1500 to 6000 psig with a differential ranging from
0-15 psid to 0-6000 psid. Bourbon Tube gauges are available
in Aluminum, Brass, or Carbon Steel with Copper Alloy
or Stainless Steel internals. Bourbon Tube gauges are
also available with 316 stainless steel housings and
internals. As with the diaphragm/bellows gauge, the
Bourbon Tube gauge is also available in a weather or
explosion proof housings. |
 Mid-West
Instrument's piston-type gauges are separated into three
types according to functions. The model 120 is a medium
range differential pressure gauge with a working pressure
of 6000 psig and a differential pressure range of 0-5
psid to 0-100 psid. Model 120 piston gauge is available
with a Aluminum or 316 Stainless Steel housing and 316
Stainless Steel internals. Special enclosures include
a weatherproof non-corrosive plastic or explosion proof
housing. |
 Mid-West
Instrument's model 130 is a low range differential press
gauge with a working pressure of 300 psig and 500 psig.
Differential pressure for model 130 ranges from 0-5"
H2O to 0-400" H2O. It is available in Plastic,
Aluminum, Brass, 316 Stainless Steel, or Hastelloy C
housings with a 316 Stainless Steel or Hasteloy C and
Elastomer diaphragm. Special enclosures include a weatherproof
or explosion proof housing. |
 Model
140 is a combination of low and medium range differential
pressure gauges. Working pressure on this gauge is 1500
psig to 3000 psig with a differential pressure range
of 0-50" H2O to 0-100 psid. It is available in
Aluminum, Brass, or 316 Stainless Steel with a 316 Stainless
Steel and Elastomer diaphragm. Special enclosures include
a weatherproof or explosion proof housing. |
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