Pressure [Max]

Temperature [Min] ºC

Temperature [Min] ºF

Temperature [Max] ºC

Temperature [Max] ºF

Fittings

Pressure Output

Burst Pressure (psi)

Repeatability

NOSHOK, Inc.

LiquiSeal™ 735 Series Purge Control Level Transmitters

Series Overview

  • 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 in. 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
Part NumberPressure OutputBurst Pressure RepeatabilityFittings
735-4918-58 Without SafeGard Option 200 psi ± 0.20% of Calibrated Span Swagelok; (1) 3/8 in. Tube, (2) 1/4 in. Tube (Compatible with Copper or Poly Tubing)
735-3918-38 25 to 650 in. SafeGard Range 200 psi ± 0.20% of Calibrated Span Polyflo; (1) 3/8 in. Tube, (2) 1/4 in. Tube
735-4918-38 25 to 650 in. SafeGard Range 200 psi ± 0.20% of Calibrated Span Swagelok; (1) 3/8 in. Tube, (2) 1/4 in. Tube (Compatible with Copper or Poly Tubing)
735-1918-48 650 to 1,750 in. SafeGard Range 200 psi ± 0.20% of Calibrated Span None, 1/4 in. National Pipe Thread (NPT)
735-3918-48 650 to 1,750 in. SafeGard Range 200 psi ± 0.20% of Calibrated Span Polyflo; (1) 3/8 in. Tube, (2) 1/4 in. Tube
735-4918-48 650 to 1,750 in. SafeGard Range 200 psi ± 0.20% of Calibrated Span Swagelok; (1) 3/8 in. Tube, (2) 1/4 in. Tube (Compatible with Copper or Poly Tubing)
735-1918-58 Without SafeGard Option 200 psi ± 0.20% of Calibrated Span None, 1/4 in. National Pipe Thread (NPT)
735-3918-58 Without SafeGard Option 200 psi ± 0.20% of Calibrated Span Polyflo; (1) 3/8 in. Tube, (2) 1/4 in. Tube
735-1918-38 25 to 650 in. SafeGard Range 200 psi ± 0.20% of Calibrated Span None, 1/4 in. National Pipe Thread (NPT)