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Type 28VL

Non-contacting Gas Seal for Vaporizing Liquids

Utilizing proven spiral groove technology, the Type 28VL harnesses the rotational energy of the pump shaft to vaporize the process fluid at a controlled rate, creating a stable gas film that lubricates the seal faces. Typical problems, such as dry-running wear, vapor lock in the seal chamber and "face popping" (which can lead to catastrophic failure of conventional wet seals), are eliminated by the Type 28VL non-contacting face technology.


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IMG1473

Features

  • Extended wear life
  • Outstanding reliability
  • Reduced power consumption
  • Zero process contamination
  • Reduced emissions

Parameters

Temperature Limits

-40°F to 400°F/40°C to 204°C

Pressure Limits

1800 psi(g)/124 bar(g) per seal face

Speed Limits

590fps/180m/s

Size Limits

11"/280mm

Recommended Applications

  • Process Pumps
  • Other Rotating Equipment

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