Expansion Tank

Amtrol 109

Expansion Tank Fill-Trol Automatic Fill 2 Gallon 100 Pounds per Square Inch Gauge 1/2" NPT 109 for Closed Hydronic Heating Radiant and Chilled Water Systems

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Product Overview

  • The AMTROL FILL-TROL system consists of a specially adapted EXTROL pre-pressurized, diaphragm-type expansion tank and the FILL-TROL, a specially designed, automatic, fill valve
  • Accepts expanded water as system temperature rises to reduce pressure build-up
  • Eliminates need for a separate, automatic fill valve
  • Fully adjustable
  • Helps reduce energy consumption and reduces system wear
  • Automatic air vent eliminates system air
  • Air purger separates air from water
  • System connection sets the point of no pressure change
  • Water-tight reservoir for expanded water
  • Sealed air cushion-factory precharged and 100% tested
  • 12 psig factory precharged
  • Strong, deep-drawn steel tank
  • Projection welded air stem maintains precharge setting
  • Tank pressure controls system fill
  • Spring-loaded check valve
  • Automatic shut-off valve spring
  • Removable strainer
  • Cold water supply
  • Expansion bypass
  • Fill gate stem

Product Details

Product TypeAutomatic Fill
Tank Capacity2GAL
Inlet/Outlet Connection1/2IN NPT
Part Number109
Precharge Pressure12PSIG
Temperature240DEG F
ApplicationClosed Loop Hydronic Heating and Radiant Heating Applications
California ResidentsWARNING: Click here for Proposition 65 information.

Commonly Purchased with This Item     
denotes installation item.

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Shipping & Returns

For Guest transactions, we offer a 30-day SATISFACTION GUARANTEE. If you receive a damaged or defective item or you are dissatisfied with a product for any reason, you can return it for an exchange or refund within 30 days. F.W. Webb Account holders should refer to their local branch for their specific return policy. See our full refund/return policy.

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