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735 Series LiquiSeal™ Purge Control

Brand: King Engineering

Features
  • Fully Integrated Air Purge Regulator and Level Transmitter
  • Operation Based on the Control Regulating a Continuous 1 cfh - cubic foot per hour - Flow of Compressed Air into the Tank Downpipe
  • Provides a 1:1 Pressure Signal to a Compatible Indicator or External Transducer Through 1/4" Airline Tubing
  • All LiquiSeal™ Purge Controls Feature an Internal Isolation Diaphragm
  • Back Pressure Created by the Continuous Purging of the Downpipe is Applied to this Internal Diaphragm
  • Working as a Pneumatic Transmitter, an Equivalent Pressure is Generated on the Gauge Side of the Diaphragm, which Isolates Downstream Components from Contact with the Liquid or Vapor Releases

Specifications

Temperature Range

  • 0° F to 120° F
  • -16° C to 54° C

Maximum Pressure

  • 300 % Over-Range

Burst Pressure

  • 200 psi

Compressed Air Requirement

  • 35 psig to 150 psig Supply Pressure at Control Inlet
  • Minimum supply pressure should be at least 20 psig greater than anticipated Max. liquid head pressure

Maximum Depth Measurement

  • 1,937 inH₂O
  • 49.0 m water

Purge Control

  • Unit incorporates differential air flow regulator with flow control orifice
  • Fixed differential set to nominal 10 psid
  • Output is 1: 1 pneumatic pressure - hydrostatic force equivalent

Air Purge Flow Rate

  • Nominal 1 cfh - cubic feet per hour - at specified differential
  • Maximum air consumption under 5 cfh

Materials

  • Machined Brass body with acrylic semi-gloss enamel finish, integral filter element is aluminum with acrylic semi-gloss enamel finish

SafeGard Option

  • An adjustable pressure-limiting control that permits pre-setting a Max. Value for pressure output from the Purge Control
  • SafeGard range available as 25 inH₂O to 650 inH₂O or 650 inH₂O to 1750 inH₂O
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