TT FLEX 2.1 Gal Potable Water Expansion Tank 3/4in MNPT #R042

TT FLEX Potable Thermal Expansion Tank for Water Heater is a practical solution for managing pressure changes in closed potable water systems. Designed with a 2.1 gallon capacity and a 3/4 inch MNPT connection, this potable water expansion tank helps protect your water heater, plumbing, and related components from the effects of thermal expansion. It is a strong fit for smaller residential water heating applications where reliable pressure control is important.

This TT FLEX thermal expansion tank is built for everyday performance and easy installation. Its compact design makes it suitable for tighter spaces, while the 3/4 inch MNPT connection supports a straightforward setup on compatible water heater and plumbing systems. Whether you are replacing an existing expansion tank or adding one to a potable water system, this model offers a dependable balance of size, capacity, and function.

The tank uses a 100% butyl diaphragm and plastic liner to separate system water from the air precharge chamber. This internal construction is designed to support consistent operation and help maintain long-term performance. The appliance-grade painted finish adds another layer of protection by helping resist external corrosion and rust, which is especially useful in utility spaces and mechanical rooms.

Open box condition means the item has been inspected and remains available for installation and use, while still offering a value-focused option compared with sealed retail stock. Please review the photos and item details carefully for the exact included contents and cosmetic presentation.

Product Highlights:
- TT FLEX potable thermal expansion tank for water heater systems
- 2.1 gallon capacity for smaller residential applications
- 3/4 inch MNPT connection for compatible plumbing setups
- 100% butyl diaphragm for internal water and air separation
- Plastic liner for added system durability
- Appliance-grade finish helps resist rust and corrosion
- Compact size for easier placement in tight installations
- Suitable for potable water expansion control in closed-loop systems

Item Specifics:
- Brand: TT FLEX
- Type: Potable thermal expansion tank
- Capacity: 2.1 gallons
- Connection Size: 3/4 inch
- Connection Type: MNPT
- Use: Water heater / potable water system
- Condition: Open box

Why Buyers Choose This TT FLEX Expansion Tank:
- Helps manage pressure buildup caused by heated water
- Supports smoother operation in closed plumbing systems
- Compact footprint works well where space is limited
- Durable construction is designed for practical residential use
- Useful for water heater expansion tank replacement projects

This TT FLEX water heater expansion tank is ideal for homeowners, plumbers, contractors, and maintenance professionals looking for a dependable potable water expansion tank with a standard 3/4 inch MNPT connection. It is commonly searched for under terms such as thermal expansion tank, water heater expansion tank, potable expansion tank, 2.1 gallon expansion tank, and 3/4 MNPT expansion tank, making it a strong match for buyers seeking this category of plumbing part.

If you need a compact, durable, and easy-to-install potable thermal expansion tank for a water heater system, this TT FLEX 2.1 gallon model is a smart choice. Its combination of size, material construction, and corrosion-resistant finish makes it a useful component for maintaining pressure balance in potable water systems.