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Instrument Isolator

Supplier: Rhinoflex Valves

The Series-32 DIO-SEAL Wafer-Style Instrument Isolator is a circumferential instrument protection devise separating a pressure gauge, transmitter, or switch from hard-to-handle process fluid, completely eliminating instrument corrosion and plugging.

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Instrument Isolator /Series 32

The Series-32 DIO-SEAL Wafer-Style Instrument Isolator is a circumferential instrument protection devise separating a pressure gauge, transmitter, or switch from hard-to-handle process fluid, completely eliminating instrument corrosion and plugging. The isolator interior consists of an elastomeric or PTFE-line Sensor Ring

The ONLY wetted component of the isolator. The end faces of the sensor ring contain integrally molded flange sealing beads, eliminating the need for separate flange gaskets. This flow through isolator creates a no “dead zone” installation, offering superior performance to diaphragm seals.

The wafer style DIO-SEAL isolator utilizes vulcanization-bonded methodology to form and bond the sensor ring to the carbon steal or stainless steal isolator body.

A sensor fluid fills the instrument’s internal volume and the annular volume between isolator body and sensor ring. This isolator design totally eliminates sensor fluid leak parts, allowing trouble free measurement of both pressure and vacuum in process line containing viscous and corrosive slurries, as well as ultra-pure fluids and food products.

The isolator ID makes to Schedule 40 ANSI Class 150 flanged piping system. Isolators for ANSI class 300 and 600 flanged piping are also available.

Features:

  • Flow-Through Design, No “ Dead Zones”
  • Only ONE Wetted Component
  • No Flange Gaskets required
  • Wafer Style construction
  • Low fill Volume/Small temperature effect
  • Sensor Ring available in many standard and food grade Elastomers and PTFE Lined
  • Furnished with pressure gauges, switches, transmitters

Applications:

  • Pressure or Vacuum Measurement
  • Pressure Drop across Filter
  • Pump Inlet/Outlet Protection
  • Pressure signal for Valve Flow/Pressure Control
  • Typical Fluid Handled:
  • Lime Slurry, FGD Scrubber Fluids
  • Pigments, Glues, Fibrous pastes
  • Deionized Water, Salt Slurries
  • Pulp, Paper stock , Lubricants
  • Sludge, waste water, Caustics
  • Corrosive Gels, Soaps, Syrups
  • Inks, Paints, Latexes
  • Candies, Pet-Foods

Isolator Installation

The wafer style Isolator is designed to fit inside the bolts of the mating pipe flanges. Flange Gaskets are not used, since the Sensor Ring contains integrally molded face sealing beads .The sealing beads protrudes from the face of the isolator body .

Upon Installation, the sealing bead is captured between the isolator body, and the mating flange, with the mating flange bottoming out on the face of the isolator body. This sealing mechanism yields a Leak-Proof Flange Seal, and ensures that factory calibration will accurately represent field data.

The annular volume between Isolator Body and Sensor Ring, and the instruments internal volume, are filled with a sensor fluid, providing the hydraulic link required to transfer the process pressure signal to the instrument. The sensor fluid must be compatible with the sensor ring material, and the process fluid.

Working Pressure is normally the flange pressure rating, at the flange operating temperature. The Isolator can be operated up to the maximum allowable temperature rating of the Sensor Ring material

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