The Model 18 is a high accuracy Vacuum Relief Regulator, providing superior vacuum control over a narrow pressure range. The Model 18 is an excellent choice for a wide range of percision applications.

Features:
  • Control sensitivity of 1/8 Inches Water Column allows use in precision applications
  • A separate control chamber and aspira­tor tube isolate the diaphragm from the main flow to eliminate hunting and buzzing
  • Unit construction lets you service the model 8 without removing it from the line
  • Mounting bracket is available
  • Canadian registration number (CRN) certification for all territories and provinces
The above description encapsulates the entire product series. Specifications for individual configurations may vary depending on the selection chosen.
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Selected Configuration

Model #:

Model 18

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Configuration

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Agency Approvals

  • CRN

Pressure Range

  • bar: 0.14 to 1
  • Inches Hg: 4 to 30
  • kPa: 14 to 100
  • psi: 2 to 14.5

Ambient Temperature

  • -40° to 93° C (-40° to 200° F)

Sensitivity

  • < 1/8" WC (0.32 cm)

Process Connection - Threaded

  • 1/4" Female BSPP
  • 1/4" Female BSPT
  • 3/8" Female BSPP
  • 3/8" Female BSPT
  • 1/2" Female BSPP
  • 1/2" Female BSPT
  • 1/4" Female NPT
  • 3/8" Female NPT
  • 1/2" Female NPT

Actuator Type

  • Knob Assembly
  • Tamper-Proof

Flow Capacity

  • 8 SCFM (68 m³/hr) at 29" Hg Vac

Mounting

  • Bracket Kit

Enclosure/Body Material

  • Aluminum Housing

Diaphragm Material

  • Nitrile on Dacron

Trim Material

  • Brass
  • Zinc-Plated Steel

Elastomers

  • FluoroCarbon
  • Nitrile
  • Silicone