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Keller-Heartt has Truegard Propylene Glycol Heat Transfer Fluids in both Inhibited and Food Grade! Order Today!
Propylene Glycol Available. Order Today!

Frequently asked questions

Find answers to common questions about our products and services
  • No additional accessories are required — this piggyback filter/regulator comes complete with a metal bowl, sight glass, gauge, and automatic drain all included out of the box.

  • The included sight glass provides a clear visual window into the bowl, allowing you to check the level of collected moisture or contaminants at a glance without disassembly or shutting down the system.

  • The automatic drain removes accumulated liquids from the metal bowl without requiring manual intervention, helping maintain consistent filtration performance without scheduled downtime for manual draining.

Key Features

  • Piggyback design combines air filtration and pressure regulation into a single, compact unit for streamlined installation

  • Durable metal bowl construction provides long-lasting resistance compared to standard plastic bowl units

  • Integrated sight glass allows quick visual inspection of bowl contents without disassembly

  • Built-in gauge enables immediate pressure readings directly at the unit

  • Automatic drain removes collected contaminants without manual intervention, reducing maintenance downtime