Expansion Tanks

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Watts 4.7 gal. Hydronic Expansion Tank Model #ETX-30, 1/2 IN. IPS
Watts 4.7 gal. Hydronic Expansion Tank Model #ETX-30, 1/2 IN. IPS
Item # 484021

This non-potable water expansion tank is designed for use in commercial and residential closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief setting of the relief valve. This carbon steel tank is pre-charged at 12 PSI, tank volume is 4.5 gal. and features a durable expansion membrane that prevents contact of the water with the air in the tank. This rugged butyl diaphragm minimizes loss of the air change and ensures long and trouble-free life for the system. This tank is made of carbon steel with epoxy , mounts to supply piping, 1/2 in. MNPT system connection and a 0.302-32 in. charging valve connection (standard tire valve) to facilitate on-site charging of the tank to meet system requirements. The maximum working pressure is 75 PSI (5.3 BAR).

  • 4.5 gal. tank
  • Rugged flexible butyl diaphragm
  • Inline and free standing models
  • Steel construction
  • Precharged to 12 PSI
  • Max. Pressure 75 PSI
  • Durable expansion membrane prevents contact of water with the air in the tank
  • Carbon steal with epoxy
  • Commercial and residential applications
  • 1/2 in. MNPT system connection
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Watts 2.1 Gal. 1/2 in. IPS Hydronic Expansion Pressure Tank, Model #ETX-15
Watts 2.1 Gal. 1/2 in. IPS Hydronic Expansion Pressure Tank, Model #ETX-15
Item # 484020

This non-potable water expansion tank is designed for use in commercial and residential closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief setting of the relief valve. This carbon steel tank is pre-charged at 12 PSI, tank volume is 2.1 gallons and features a durable expansion membrane that prevents contact of the water with the air in the tank. This rugged butyl diaphragm minimizes loss of the air change and ensures long and trouble-free life for the system. This tank is made of carbon steel with epoxy finish, mounts to supply piping, 1/2 inch MNPT system connection and a 0.302-32 inch charging valve connection (standard tire valve) to facilitate on-site charging of the tank to meet system requirements. The maximum working pressure is 75 PSI (5.3 BAR).

  • Precharged to 12 psi
  • Rugged flexible butyl diaphragm
  • Inline and free standing models
  • Steel construction
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Honeywell Combo Trim Kit Supervent
Honeywell Combo Trim Kit Supervent
Item # 2472976

TK Series Combo Boiler Trim kits are a quick way to purchase boiler trim when doing a boiler change out. All kits with SuperVent include expansion tank and a high performance air eliminator. Used for in-floor heating applications as well.

  • Includes TK300-30, PV125S, SCV-050, FM911
  • Operating temperature range (F)240°F maximum
  • Volume (gal) 4.4 Gal.
  • Maximum acceptance volume (gal) 2.5 Gal.
  • Connection type tank: male NPT; super vent: sweat
  • Connection size (in.) Supervent: 1-1/4 in.; tank: 1/2 in.
  • Meets all your hydronic needs in one easy package
  • Complete, convenient and easy to carry
  • Buy a boiler: buy a kit
  • Expansion tank is welded, not clamped, for longer, leak-proof life
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Zurn-Wilkins 8 l Lead-Free Potable Water Thermal Expansion Tank
Zurn-Wilkins 8 l Lead-Free Potable Water Thermal Expansion Tank
Item # 272014
Eco-friendly item. Symbol indicates that the product is part of our EcoSource green purchasing program. Product meets our sustainability standards for one or more of the following high-performance categories: Water Conservation, Energy Efficiency, Indoor Air Quality, and Material Selection. Ships from manufacturer. Please note that additional delivery time may apply.

The 2 Gal. XT-8 Thermal Expansion Tank is utilized on potable water lines between the backflow preventer or pressure reducing valve and the water heater for protection against water thermal expansion in residential applications. As the system pressure increases, water enters the polypropylene-lined water chamber of the tank, expanding a diaphragm into a pre-charged air chamber to keep the system pressure below the relief valve setting. Materials include a carbon steel shell with an epoxy finished coating, and corrosion-resistant stainless steel connection with a polypropylene liner and Butyl rubber diaphragm.

  • Pre-charge is field adjustable for convenient maintenance
  • Carbon steel shell with polypropylene liner ensures long-lasting construction
  • Diaphragm style tank is ideal for thermal expansion protection in residential applications
  • IAPMO listed
  • Stainless steel connection resists corrosion
  • Water Quality Association - Certified to NSF/ANSI 61
  • Low-lead law compliant
  • Steel shell protected with polypropylene liner

Ships from manufacturer. Please note that additional delivery time may apply.

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Zurn-Wilkins 18 l Lead-Free Potable Water Thermal Expansion Tank
Zurn-Wilkins 18 l Lead-Free Potable Water Thermal Expansion Tank
Item # 272017
Eco-friendly item. Symbol indicates that the product is part of our EcoSource green purchasing program. Product meets our sustainability standards for one or more of the following high-performance categories: Water Conservation, Energy Efficiency, Indoor Air Quality, and Material Selection. Ships from manufacturer. Please note that additional delivery time may apply.

The 5 gallon XT-18 Thermal Expansion Tank is utilized on potable water lines between the backflow preventer or pressure reducing valve and the water heater for protection against water thermal expansion in residential applications. As the system pressure increases, water enters the polypropylene-lined water chamber of the tank, expanding a diaphragm into a pre-charged air chamber to keep the system pressure below the relief valve setting. Materials include a carbon steel shell with an epoxy finished coating, and corrosion-resistant stainless steel connection with a polypropylene liner and Butyl rubber diaphragm.

  • Pre-charge is field adjustable for convenient maintenance
  • Carbon steel shell with polypropylene liner ensures long-lasting construction
  • Diaphragm style tank is ideal for thermal expansion protection in residential applications
  • Stainless steel connection resists corrosion
  • Low-lead law compliantIAPMO® ListedWater Quality Association - Certified to NSF/ANSI 61 & 372
  • Maximum water temperature 200°F
  • 4.8 Gal. tank volume capacity
  • Diaphragm is made of butyl rubber
  • Water chamber is polypropylene lined

Ships from manufacturer. Please note that additional delivery time may apply.

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Zurn Wilkins WILKINS WATER THERMAL EXPANSION TANK, 9.25 GALLON
Zurn Wilkins WILKINS WATER THERMAL EXPANSION TANK, 9.25 GALLON
Item # 272018
Eco-friendly item. Symbol indicates that the product is part of our EcoSource green purchasing program. Product meets our sustainability standards for one or more of the following high-performance categories: Water Conservation, Energy Efficiency, Indoor Air Quality, and Material Selection. Ships from manufacturer. Please note that additional delivery time may apply.

Designed for installation on potable water lines between the backflow preventer or pressure reducing valve and the water heater to protect against water thermal expansion. When system pressure increases, water enters the tank’s polypropylene lined water chamber which expands a diaphragm into a pre-charged air chamber, keeping system pressure below the relief valve setting.

  • Outer shell - Carbon Steel
  • Coatings - Epoxy finish (outer shell)
  • Connection - Stainless Steel
  • Liner - Polypropylene
  • Diaphragm - Butyl Rubber

Ships from manufacturer. Please note that additional delivery time may apply.

Units: Each
Qty:

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