Mid-West Instrument Accessories

Available accessories from Mid-West Instrument include Pulsation Dampeners, Pressure Limiting Valves (Gauge Minders), and Manifold Valves (Manifolds).

150br
Mfld5
200 B
Mfld3

Mid-West Model 150 Pulsation Dampener

  • The Model 150 “Vari-Damp®” serves as a versatile pulsation dampener with dual functionality.
  • Equipped with a fine thread needle valve, allowing for precise dampening adjustments.
  • Features a Precision Controlled Flow Rate Ball Check, designed to prevent line surges, shock waves, and fluid hammer.
  • Adjustable while the unit remains pressurized for convenience and efficiency.
  • Provides exceptional protection for low displacement devices, including bourdon tube gauges or electronic transmitters.
  • Also suitable for high displacement devices like diaphragm, piston, or bellows-operated gauges, recorders, or controllers.
  • Recommended for double-ported instruments such as Differential Pressure Gauges, advising a Model 150 installation on each input pressure line.
  • Includes a Controlled Leak Check to safeguard against pressure spikes.
  • Offers options for working pressures of either 5000 (340 bar) or 10000 (680 bar) PSIG.
150ss

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Mid-West Model 200 Pressure Limiting Valve

200 Br
  • Model 200 “Gauge Minder” incorporates a pressure limiting valve to prevent over-pressurization, safeguarding against calibration errors and internal damage.
  • Comes with three adjustable range springs, allowing shutoff pressure settings from 50 PSI (3.4 bar) to 5000 PSI (340 bar).
  • Features an automatic shutoff valve that ensures a secure closure with no chattering, enhancing reliability.
  • Valve reopens with just a 10% decrease from set pressure, eliminating the need for external reset.
  • Ensures maintained accuracy of attached instruments until reaching the designated pressure shutoff point.
  • Specifically designed for the protection of pressure gauges and transmitter components from overpressure situations.
  • Aims to mitigate principal causes of instrument failure by controlling pressure range effectively.

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Mid-West Manifolds

  • Rated for 6000 PSIG (414 bar) at 240°F (115°C).
  • Instrument/Process connections: ½” FNPT standard, ¼” FNPT for 3-Valve Mini-Manifolds.
  • Dust cap shields spindle threads from dirt and contamination.
  • Gland Nut and Lock Nut adjust for leak-free operation, suitable for vacuums.
  • Utilises PTFE packing with metal seal ring for assured leak-proof service.
  • Machined bonnet ensures maximum reliability, extends valve lifespan, and protects against corrosion.
  • Isolated stem threads with adjustable packing beneath stem for durable, leak-proof service.
  • Design prioritises fewer parts to decrease leak points and emissions.
  • Features ¼” FNPT test ports for convenient testing (excluding #113343 Mini-Manifold).
  • Constructed with Teflon packing, stainless steel body, and integral seat for durability.
  • 3 & 5 valve manifolds ideal for indirect instrument mounting, offering strong, compact, and leak-free performance verified by rigorous testing.
Mfld3mini

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