ZILMET USA

4.8G HYDRONIC EXPANSION TANK

4.8G HYDRONIC EXPANSION TANK

ZHT18-30

$69.95
$69.95 $157.50
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MORE PRODUCT INFORMATION

DOCUMENTS & RESOURCES

PRODUCT OVERVIEW

ZHT18-30 is a Zilmet Cal-Pro hydronic expansion tank used in residential and light commercial boiler systems.

Product description

Zilmet ZHT18-30 Hydronic Expansion Tank
This model is a ~4.8-gallon diaphragm expansion tank designed to absorb thermal expansion in closed-loop heating systems.

Key specifications

  • Type: Hydronic expansion tank (boiler/heating systems)
  • Capacity: 4.8 gallons (≈18 liters)
  • Connection: 1/2" NPT (some variants 3/4")
  • Max pressure: 60 PSI (common rating)
  • Max temperature: 210°F
  • Precharge: Typically 12 PSI
  • Material: Carbon steel tank with internal rubber diaphragm
  • Orientation: Vertical or inline installation