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The Eastman DET-5 Thermal Expansion Tank is a 2.1-gallon steel vessel engineered for residential gas, oil, or electric direct-fired water heaters and hot water storage applications. It effectively absorbs the increased water volume generated by thermal expansion, maintaining balanced pressure to prevent the T&P relief valve from opening. Constructed with a durable alloy steel shell and an FDA-approved Butyl rubber diaphragm, the tank features an internal membrane that prevents air-to-water contact for a longer service life. The unit comes factory pre-pressurized at 40 PSI and is field-adjustable to match specific system requirements. It is equipped with a 3/4-inch MIP stainless steel connection and is IAPMO listed and ANSI/NSF 61 certified for potable water safety. This tank is suitable for use with water heaters ranging from 30 to 160 gallons in closed-loop systems.

Use on gas, oil or electric, direct-fired, residential water heater and hot water storage tank applications to absorb the increased volume of water created by thermal expansion. It also maintains balanced pressure throughout the water supply system by keeping system pressure below the T&P relief valve setting. It is a pre-pressurized, field-adjustable steel tank with an FDA-approved Butyl rubber diaphragm and brass 3/4 in (20 mm) inlet connection. An expansion membrane prevents air-to-water contact in the tank ensuring a long system life. IAMPO listed and ANSI/NSF 61 certified. Maximum pressure 150psi (10 bar).

Packaging/Shipping Size and Weight: Length: 9" | Width: 9" | Height: 13" | Weight: 6 lbs

Features

Absorbs thermal expansion in residential water heater systems
Durable alloy steel construction with white powder-coated finish
FDA-approved Butyl rubber diaphragm ensures long-term reliability
304 stainless steel 3/4 inch MIP system connection
Factory pre-charged to 40 PSI and field-adjustable
Prevents pressure build-up to protect T&P relief valves
IAPMO listed and ANSI/NSF 61 certified for potable water
Compatible with 30-160 gallon water heater tanks
2.1 gallon thermal expansion tank for residential water heaters
Helps control pressure from thermal expansion in closed plumbing systems
Pre-pressurized, field-adjustable design
Steel tank with white finish
FDA-approved butyl rubber diaphragm
Brass 3/4 in MPT (20 mm) inlet connection
150 psi (10 bar) maximum working pressure
IAPMO listed; ANSI/NSF 61 certified

Product Details
brand:	Eastman
type:	Expansion Tank
material:	Steel
size:	2.1 Gallon
Color:	White
Finish:	White
Material:	Steel
Size:	2.1 Gallon
Connection Size:	3/4 in. MIP
Maximum Pressure:	150 PSI
Maximum Temperature:	210°F
Factory Pre-charge:	40 PSI
Certifications:	IAPMO, ANSI/NSF 61, Lead-Free
Application:	Residential Water Heaters (30-50 Gallons)
Tank Capacity:	2.1 Gallons
Diaphragm Material:	Butyl Rubber
Pre-charge Pressure:	40 PSI
Connection Type:	3/4 in. MIP
Capacity:	2.1 Gallons
Connection Type:	3/4 in MPT
Diaphragm Type:	Butyl Rubber
Dimensions:	12 In Height X 8 In Width
Nominal Capacity:	2.1
Standards:	FDA Approved, IAMPO Listed, ANSI/NSF 61 Certified
Temperature Rating:	210
Usage:	For Used On Gas, Oil, or Electric, direct-fired, Residential Water Heater and Hot Water Storage Tank
Working Pressure:	150

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General Ledger Coding

General Ledger Coding is a value added service provided for you at no additional cost.

General Ledger Coding makes accounting easier by providing you with a calculated total of purchases based on your General Ledger Codes.

In addition to traditional General Ledger Summary provided at time of invoice, we can also provide quotes and order acknowledgements with General Ledger Coding as well. We also give you the ability to change a GL Code for one or all items for renovation projects that may utilize a single GL Code. We can also code any of our "extended inventory" items with your General Ledger Code at the time of quote, order confirmation and invoicing as well. We can code our item numbers directly to your GL Codes should our item categories not align directly with your GL Code Categories.

Please contact us if you wish to implement our General Ledger Coding feature.