(423) 586-5650  |  Contact Us
Catalogs Order History & Status Invoices
0
My Cart $-.--
Shop by Category
Quick Order
0
Home Plumbing Rough Plumbing Supplies Pumps (Well) Pump Tanks G5L WATER HEATER EXPANSION TANK STEEL 3/4IN MNPT

G5L WATER HEATER EXPANSION TANK STEEL 3/4IN MNPT

PART 371191
SUPPLIER AMTROL/WATER WORKER
SUPPLIER PART # G5L
RANK B
SHELF PACK 1
Calculating price...
QUANTITY

About this item

The Water Worker G5L Expansion Tank is a diaphragm-type, pre-pressurized tank designed to protect residential hot water systems from the damaging effects of thermal expansion. Built with high-quality steel and NSF-certified components, this tank absorbs excess pressure caused by heated water, preventing relief valve discharge and extending the life of your water heater and plumbing fixtures.

Key Features:

  • Capacity: 2 gallons
  • Connection Size: 3/4" MNPT (Male National Pipe Thread)
  • Material: Deep-drawn steel shell – twice as strong as rolled steel of the same thickness
  • Diaphragm: Seamless butyl rubber – flexes without creasing for long-term reliability
  • Liner: Polypropylene – resists flaking, cracking, and contamination; does not impart taste or odor to water
  • Finish: High-gloss enamel – protects against corrosion and environmental wear
  • Pre-Charge Pressure: Factory set to 25 psi (adjustable based on system requirements)
  • Dimensions: Approx. 8" diameter x 13" height
  • Weight: Approx. 5 lbs

Applications:

  • Residential hot water systems
  • Closed-loop plumbing systems
  • In-floor heating systems
  • Systems with backflow preventers or check valves

Compliance & Certifications:

  • NSF Certified: Meets ANSI/NSF Standard 62 for potable water systems
  • Lead-Free Construction: Safe for drinking water applications
  • Required by Code: In many counties and states for water heater installations

Benefits:

  • Protects Plumbing Fixtures: Prevents pressure-related damage to faucets, valves, and appliances
  • Extends Water Heater Life: Reduces wear on the pressure relief valve
  • Maintenance-Free: No servicing required once installed
  • Compact Design: Fits easily in tight utility spaces
  • Reliable Performance: Diaphragm and liner isolate water from metal shell for clean operation

There are currently no resources for this product.

Brand Water Worker
Brand Amtrol Water Worker
Pressure Rating 150 psi
Diameter 8.5 in
Height 15 in
Material Steel
Port Size 3/4 in MNPT
Weight 6.0 lb
UPC Code 000815900083
Shelf Pack 1
Minimum Order Qty 1
Supplier Name Amtrol/Water Worker
Supplier Short Name Amtrol/Wat
Supplier Address 1 PO Box 633
Supplier City Lincolnton
Supplier State NC
Supplier Zip 28093
Country US
Supplier Email jimlailandassoc@bellsouth.net
Supplier Url www.amtrol.com
Buyer Name Michael Heck
Supplier Phone (704) 732-4057
Supplier Fax (704) 732-4059
Our Customer Id 89437
Return Policy Return to Factory
Product Lines Pre Charged Well Tanks
Rep Name Jim Lail
Rep Phone (704) 732-4057
Rep Fax (704) 732-4059
Rep Email jimlailandassoc@bellsouth.net
Rep Agency Jim Lail and Associates