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 |