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Mallard Pressure Controller, Model 3350/3360

Model 3350/3360 Pressure Controller

Brand: Mallard Control
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The Model 3350 / 3360 design is preferred by production operators and technicians worldwide for pressure control requirements, due to its simple construction, versatility, and reliable performance in the most demanding applications. 

The controller is offered in proportional (Model 3350) and proportional-plus-reset (Model 3360) configurations.
Features
  • Rugged Design - Die-cast aluminum case and cover can withstand impacts that would fracture the plastic cases of our competitors.
  • Wide Range of Bourdon Tubes - Pressure ranges from 0 to 30 psig to 0 to 3,000 psig are available. Two interchangeable ranges of output bellows and gauges (3 to 5 psi and 6 to 30 psi) are also available.
  • Simple Adjustments - High-visibility dials are provided to assure accuracy of pressure setpoint, proportional band, and reset settings.
  • Easy Maintenance - Simple controller design allows fast, easy maintenance and minimal spare parts inventory.
  • Field Reversible - Switch controller action with a few simple steps. No additional parts required.
  • Easy Mode Conversion - Add reset action to a proportional controller by simply adding a single module and three pieces of tubing.
  • Flexible Mounting Options - Available with brackets for mounting on actuator yoke, diaphragm housing, panel, surface, or 2-inch pipestand.
  • Vibration Resistance - Simple design and low mass of internal parts allow the controller to withstand vibration encountered in most industrial environments.
  • Low Air (Gas) Consumption - Relay and nozzle design reduces steady-state air (gas) consumption to as low as 4.2 scfh, cutting operating costs.
  • Sour Service Capability - Materials are available for applications handling sour gases. These constructions comply with the recommendations of NACE MR-01-75.

Specifications

Brand

Enclosure, Body Material

  • Die Cast Aluminum

Gasket Material

  • Neoprene

Input Signal

  • psi: 0 to 3,000 (kPa: 0 to 20,000, bar: 0 to 200)

Materials of Construction

  • Bellows: Brass
  • Bourdon Tube, Input Pressure Tubing & Mounting Bracket: 316 Stainless Steel
  • Pressure Block, Relay, Mounting Bracket: Steel
  • Reversing Block, Relay, Proportional Band & Reset: Aluminum
  • Supply & Output Tubing (Internal), Nozzle, Relay, Proportional Band & Reset, Bellows: Stainless Steel

NACE & NIST

  • NACE MR-0175

NPT Connection

  • 1/4” NPT Female

O-Ring Material

  • Buna-N

Output

  • Controller Output - psi: 3 to 30 (bar: 0.2 to 2.0, kPa: 20.7 to 206.8)

Documentation

Data Sheets

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