This tank will not lose its air cushion unless the bladder becomes detached, at which point the tank would need to be replaced. Amtrol extrol expansion tank for domestic water and open loop heating systems st12 special pricing 4. Provides all of the information needed to include an amtrol product as part of a job quote. They are not available to order on an individual basis, however each data sheet is available on the amtrol web site and can be downloaded and printed for use as. This warranty cannot be transferred it is extended only to the original purchaser or first user of the product. Amtrol thermal expansion tanks are engineered to control pressure buildup in closed, potable water systems. Please call us toll free at 8669149802 and we will help you figure. Available in diaphragm, partial acceptance bladder and full acceptance bladder designs, these tanks range in size from 2 gallons 7. St series nonasme construction shell steel diaphragm heavy duty butyl nsfansi 61 liner antimicrobial system connection stainless steel finish urethane topcoat water circulator turbulator air valve projection welded factory precharge inline models 50 psig 3. Expansion tanks use compressed air to maintain system pressures by accepting and expelling the changing volume of water as it heats and cools. Amtrol thermxtrol st12 expansion tank141n43 the home. This small volume of water can cause rapid increases in system pressure if a backflow preventer or other oneway device is installed without the proper thermal expansion tank.
Unscrew the protective cap from the air inlet valve. I have to admit i did not maintain the pressure in the tank like it should have been done. The biggest drawback to installing a thermal expansion tank is the maintenance that goes along with it. As the tanks gets older more frequent maintenance is. Below is a direct link to submittal data sheets for each product. I think the failure of amtrol tank has killed my water heater prematurely. The tank required for any application can be sized with the following equation. Nearly seven decades after inventing the first diaphragm expansion tank, amtrol s lineup now includes specialty models engineered for modern, highefficiency systems.
Amtrol st12 pdf june 23, 2019 amtrol st thermxtrol is a water heater expansion tank, designed for use in domestic hot water heating systems to eliminate the potential hazards of. Page 2 what amtrol will do if you have a covered warranty claim in the event of a breach of the foregoing warranty, amtrol will at its option either make repairs to correct any defect in material or workmanship or supply and ship either new or used replacement parts or products. Thermxtrol st12 the st12 thermxtrol from amtrol is designed to protect domestic water heaters up to 120 gallon capacity. Expansion tanks have capacities ranging from 2 gallons to several hundred gallons. Seven 7 year limited warranty st25v through st210v models. Huge selection of amtrol extrol boiler expansion tanks. Water heater expansion tank is commonly installed in a domestic hot water system that contains a backflow preventer, a check valve or a pressure reducing valve. Amtrol thermxtrol st5 expansion tankst5 the home depot. Available in diaphragm, full acceptance and partial acceptance bladder designs, all thermxtrol expansion tanks are made in the usa at our iso 9001. Amtrol st12 pdf amtrol st thermxtrol is a water heater expansion tank, designed for use in domestic hot water heating systems to eliminate the potential hazards of. Armstrong expansion tanks are designed to reduce tank sizes by up to 80% over standard designs. Amtrol will not accept any claims for labor or other costs. Since the beginning, weve kept the pressure on our competitors with features they just cant match.
The thermxtrol expansion tank can be used in a variety of places such as apartments, office buildings and hospitals. Finally my water heater started to leak and this is when i found the expansion tank was full of water the diafragm was broken. Extrol expansion tanks accept expanded fluid in closedloop hydronic systems to control pressure buildup, improve comfort and help reduce energy costs. Amtrol extrol expansion tank domestic water and open loop.
This expansion tank helps eliminate btu and water waste. This version of amtrol st12 manual compatible with such list of devices, as. Amtrol st12 thermxtrol is a water heater expansion tank, designed for use in domestic hot water heating systems to eliminate the potential hazards of. Stc series asme construction shell st5c, st12c, st20vc. Amtrol invented the thermal expansion tank to absorb expanded water in closed, hot water systems and protect the water heater.
In that case the symptom may be observing that heating system pressure relief valve may spill or water may be found leaking out at the expansion. Specifications expansion tank type there are two basic expansion tank types. Amtrol st8 thermxtrol inline thermal expansion tank 3. An expansion tank is a required component for all hot water boiler systems, and is designed to control system pressure and help reduce energy consumption of heating and circulating operations. Amtrol t12 thermal expansion tank product information technical details. Amtrol 141n43, thermxtrol st12 thermal expansion tank. Amtrol revolutionized the hydronic industry when we introduced extrol, the worlds first. It has either been discontinued, made obsolete, or is no longer available for sale. Outward appearances matter, but cut open our products and you. Diaphragm or bladder tank designs isolate the expanded water from the pressure controlling air cushion.
We are the most experienced solar distributor in the northeast and are factory authorized and trained to help you with all of your solar equipment needs. Asme tanks meet section viii, division 1 standards. Amtrol st12 thermxtrol nonasme thermal expansion tank. For warranty information about this product, please click here pdf. Thermal expansion absorbers the best solution for controlling thermal expansion. To determine the size needed for your system, use the expansion tank sizing calculator. Please reduce your quantity or change your pickup store to check stock nearby. Mc4400 0619 w i i 1400 diision road, west warwick, ri 02893 usa t. Our brands are the most recognized in the industry. Amtrol st thermxtrol is a water heater expansion tank, designed for use in domestic hot water heating systems to eliminate the potential hazards of. When it comes to great brands, you can stake your reputation on ours. Thermxtrol expansion tanks are designed to control pressure in commercial closed, potable hot water systems. Amtrol st12 thermxtrol is a water heater expansion tank, designed for use in domestic hot water heating systems to eliminate the potential hazards of water expansion. Buy amtrol extrol vertical expansion tank direct and save.
With tank empty of water, adjust air precharge to match cold water supply pressure. Amtrol thermxtrol hot water heater expansion tank st12. Occasionally the internal bladder of these tanks an rupture, leading rather quickly, perhaps in less than a single heating season, to a waterlogged expansion tank tank. It accepts expanded water caused by thermal expansion, returns water to the system when hot water is used, and protects water heater and fixtures. Thermal expansion and crossconnection control solutions as seen on. Amtrol, a leading manufacturer of thermal expansion tanks states that yearly maintenance is required. Amtrol st12c thermxtrol asme thermal expansion tank is engineered to control pressure buildup in closed, potable water systems.
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