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RHT Hydronic Fill & Purge System

Affordable fluid management for radiant heating systems

The RHT Hydronic Fill and Purge System meets a relatively high head pressure and flow rate (as shown in the figure below) for filling and purging air from hydronic systems. This is a great option for systems running glycol, or for any closed loop system that cannot be connected to a permanent domestic water supply. With the removeable 4" fill port fluids can be mixed in the 7 gallon container and pumped directly into a hydronic system. Return fluid can be directed back into the 7 gallon tank minimizing waste when using a glycol mix during the air purging process. See page 2 for purging diagram.

  • 7 gallon polyethylene tank with gallon markings
  • Fast fill makes it easy to purge a whole radiant heating system
  • Best priced fluid managment and purging system on the market
  • 5 GPM pump with integrated pressure switch, turns on below 15psi and off above 25psi
  • 4" vented manway
  • 1 year warranty on pump
  • includes 6' 110 plug on pump
NOTE: The RHT Hydronic Fill and Purge System is not intended for use in line with or as feed to a backflow prevention and/or pressure reducing device. If used with such a device, the unit must be on a separate feed line into the system.

↓   RHT Glycol Fill Unit   ↓

RHT Hydronic Fill & Purge System / Glycol Fill Unit

Part No: RHT Glycol Pump

$553.29 each
$1991.85 (4 x $497.96)


Part No: 08500500A

$353.46 each

Easy Connection Kit for RHT Hydronic Fill & Purge System

  • ½" RHT Push-fit Ball Valve
  • ½" SharkBite elbow
  • ½" SharkBite x ¾" FNPT Reducing Connector


$49.10 each


Toll Free: (866) 361-4782

Fax: 206-274-1501

17420 Vashon Hwy SW
PO Box 2270
Vashon, WA 98070

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