Product Catalog 2016-05-29T17:25:44+00:00

845-5 5 valve test king with in line hose filters and line pressure gauge.

Mid-West Instrument

  • (5) Valve Test Kit
  • Line Pressure Gauge
  • Soft-Seated Brass Needle Valves (with replaceable valve seats)
  • Protected with replaceable 90 micron filters
  • 5 Year Warranty

Backflow Test Kit Accessories

Mid-West Instrument

  • Test Cock cleaning tool
  • Bleed off valve assembly
  • Quick connect connections
  • 90° Swivel Quick Connect Test Cock Adapters

MA DEP Backflow Device Test Form

Mid-West Instrument

Test procedure reference


Mid-West Model 130 Low Differential Pressure Gauge

Mid-West Instrument

The Model 130 is a rugged general purpose differential pressure gauge with a 4-1/2″ round dial.

  • Either linear or square root (for flow) dials.
  • Working pressure of 300 P.S.I.G. (20 bar) with a polysulfone body, and 500 P.S.I.G. (34 bar) in aluminum, brass, 316 S.S., and Hastelloy C.
  • Over-range protection to rated working pressure.
  • Five Year Limited Warranty

Model 105/106 Differential Pressure Gauge

Mid-West Instrument

  • Differential Pressure Range 0-10″ H2O to 0-80″ H2O (or Equivalent) Uni-Directional or Bi-Directional
  • Accuracy ±1% F.S. Standard, ± 1/2% F.S. Optional
  • Dial Size 6″ (Standard), 4-1/2″ (Optional)
  • Working Pressure up to 6000 PSIG (400 bar)
  • Material of Construction – Body Aluminum, Brass, Carbon Steel, 316/316L Stainless Steel
  • Materials of Construction – Internals Copper Alloy or Stainless Steel

Model 109 Differential Pressure Gauge

Mid-West Instrument

  • Wide DP Range from 0-15 PSID to 0-6000 PSID
  • Bourdon Tube Sensing Element
  • Working Pressures up to 6000 PSIG (400 bar)
  • Over-Range Protection, High over Low and Low over High
  • Gauge Housings Available in Aluminum, Brass, Carbon Steel and 316/316L Stainless Steel
  • Wide Range of Elastomers

Model 115/116 Cryogenic Level Gauge

Mid-West Instrument

  • Drop in replacement for Barton and Prime Measurements
  • Over-Range Protection, High over Low and Low over High
  • Micro adjust pointer
  • DP Ranges from 0-50″ H2O to 0-600″ H2O
  • Tamper Proof, All adjustments require removal of bezel for access.
  • Snap acting micro switch for alarm (optional)
  • In house Oxygen Cleaning (optional)
  • Private labeling (optional)
  • Black ink on white dial or White ink on back dial

Model 120 Differential Pressure Gauge

Mid-West Instrument

  • DP Ranges from 0-5 PSID to 0-110 PSID
  • Piston Sensing Element
  • Working Pressure up to 6000 PSIG (400 bar)
  • Over-Range Protection, High over Low and Low over High
  • Gauge Housings available in Aluminum, Brass, 316/316L Stainless Steel, Aluminum Bronze and Monel
  • Wide Range of Elastomers

Model 121 Differential Pressure Switch/Transmitter

Mid-West Instrument

  • 4-20mA Loop Powered Micro Processor based Transmitter
  • 4 Position Terminal Strip
  • 8-28 VDC Loop Powered 2-wire interface
  • 1000 Ohm max loop resistance at 28 Vdc.
  • ±2% Accuracy from 20% to 100% of scale, ascending
  • Operating Range -20ºF to 150ºF (-20ºC to 65ºC)
  • Indicator operation is isolated from Loop Power
  • Weather Resistant
  • Assembly is housed in a NEMA 4X (IP65) Enclosure

Model 140/141 Differential Pressure Gauge

Mid-West Instrument

  • DP Ranges from 0-25 PSID to 0-100 PSID
  • Elastomer Diaphragm Sensing Element, No Cross Port Leakage
  • Up to 3000 PSIG Working Pressure (200 bar)
  • Over-Range Protection, High over Low and Low over High
  • Gauge Housings available in Aluminum, Brass, 316/316L Stainless Steel and Acetal Plastic
  • Wide Range of Elastomers