Expansion Tanks

Therm-X-Trol Thermal Expansion Tank for Potable System. 5 Year Warranty, 200F max, operating pressure. 150psig max. working pressure. Brass air charge fitting w/ protective plastic cap. UPC, ANSI/NSF61, Made in USA

BackStop® A series tanks are fixed diaphragm type pre-charged thermal expansion tanks

They are designed to absorb the expansion forces and control the pressure in potable water systems

The water is separated using the heavy duty diaphragm preventing tank corrosion and waterlogging

Stainless steel system connection, heavy duty butyl rubber diaphragm, food grade polypropylene liner

35 psi factory pre-set pressure

The Wolverine Brass 2.1 gallon potable water expansion tank has a carbon steel tank with 3/4" NPT stainless steel connections. The expansion tank controls the thermal expansion forces within hot water heating systems as water heats up and prevents system pressure from getting to high. The tank utilizes a heavy duty diaphragm to prevent corrosion and waterlogging. The product comes with a factory pre-set pressure of 35 psi with a max operating pressure of 150 psi and a max air-charge of 80 psi. Wolverine Brass portable water expansion tanks are certified to ANSI Z1088 & NSF 61 and have a 6 year warranty.

2.1 gallon tank volume

For use with potable water systems

Maximum Temperature of 200°F

Maximum Operating Pressure of 150 psi

UPC certified to ANSI Z1088 & ANSI/NSF 61

Maximum Air-Charge 80 psi

6-year warranty

WATTS®, ST-12, Thermal Expansion Tank for Potable Water, 4.4 Gallon, 3/4" NPT Connection, 150 PSIG Maximum Work Pressure, 200° F Maximum Operating Temperature.

BackStop® A series tanks are fixed diaphragm type pre-charged thermal expansion tanks

They are designed to absorb the expansion forces and control the pressure in potable water systems

The water is separated using the heavy duty diaphragm preventing tank corrosion and waterlogging

Stainless steel system connection, heavy duty butyl rubber diaphragm

35 psi factory pre-set pressure

WATTS®, #30, Thermal Expansion Tank for Potable Water, 4.4 Gallon, 1/2" NPTM Connection, 60 PSI Maximum Work Pressure, 240° F Maximum Operating Temperature, 10-5/8" Diameter

They are designed to absorb the expansion of water in a hydronic (forced hot water) heating system, keeping system pressures below relief valve settings

BackStop® H series hydronic expansion tanks are residential diaphragm type pre-charged heating system tanks

Steel system connection, heavy duty butyl rubber diaphragm

The water is separated from the air cushion by a heavy-duty butyl diaphragm

12 psi factory pre-set pressure

Series PLT Potable Water Expansion Tanks are designed to absorb the increased volume of water created by thermal expansion and to maintain balanced pressure throughout the potable water supply system. Heated water expands, and in a domestic hot water system, the system may be closed when the potable water system is isolated from the public water supply by a one-way valve such as pressure reducing valve, backflow preventer or check valve. Provisions must be made for this expansion. Series PLT expansion tanks absorb the increased volume of water created when the hot water storage tank is heated and keeps the system pressure below the relief setting of the T&P relief valve. It is a pre-pressurized steel tank with an expansion membrane that prevents contact of the water with the air in the tank. This prevents loss of air to the water and insures long and troublefree life for the system. These tanks may be used with all types of Direct Fired Hot Water Heaters (gas, oil or electric) and hot water storage tanks.

Rugged flexible butyl diaphragm

Field adjustable pre-charge

In-line and free standing models

Can be used with most standard hot water heaters and storage tanks

The Honeywell Boiler Trim Kit is all you need for your hydronic needs. Save time by ordering one item instead of several different parts. It's a complete time saving solution in one handy box! Kit Includes: Expansion Tank - Welded, not clamped, for longer leak-proof life, 4.4 gal tank. Butyl diaphragm to separate the air from the system water. Check Valves - Allows replacement of expansion tank and/or air vent without draining the heating system. SuperVent Air Eliminator - Optimal air removal from hydronic systems. Eliminates annoying gurgling sounds. Debris baffle to control dirt fouling and prevent failure. Dial-Set Boiler Fill Valve And Backflow Preventer - Easy dial-set technology allows simple output pressure setting in psi. 1/4" NPT port on side for optional gauge. Includes union nut, sweat, and threaded tailpiece.

The Honeywell Boiler Trim Kit is all you need for your hydronic needs. Save time by ordering one item instead of several different parts. It's a complete time saving solution in one handy box! Kit Includes: Expansion Tank - Welded, not clamped, for longer leak-proof life, 4.4 gal tank. Butyl diaphragm to separate the air from the system water. Check Valves - Allows replacement of expansion tank and/or air vent without draining the heating system. SuperVent Air Eliminator - Optimal air removal from hydronic systems. Eliminates annoying gurgling sounds. Debris baffle to control dirt fouling and prevent failure. Dial-Set Boiler Fill Valve And Backflow Preventer - Easy dial-set technology allows simple output pressure setting in psi. 1/4" NPT port on side for optional gauge. Includes union nut, sweat, and threaded tailpiece.

The Honeywell Boiler Trim Kit is all you need for your hydronic needs. Save time by ordering one item instead of several different parts. It's a complete time saving solution in one handy box! Kit Includes: Expansion Tank - Welded, not clamped, for longer leak-proof life, 4.4 gal tank. Butyl diaphragm to separate the air from the system water. Check Valves - Allows replacement of expansion tank and/or air vent without draining the heating system. SuperVent Air Eliminator - Optimal air removal from hydronic systems. Eliminates annoying gurgling sounds. Debris baffle to control dirt fouling and prevent failure. Dial-Set Boiler Fill Valve And Backflow Preventer - Easy dial-set technology allows simple output pressure setting in psi. 1/4" NPT port on side for optional gauge. Includes union nut, sweat, and threaded tailpiece.

The Honeywell Boiler Trim Kit is all you need for your hydronic needs. Save time by ordering one item instead of several different parts. It's a complete time saving solution in one handy box! Kit Includes: Expansion Tank - Welded, not clamped, for longer leak-proof life, 4.4 gal tank. Butyl diaphragm to separate the air from the system water. Check Valves - Allows replacement of expansion tank and/or air vent without draining the heating system. SuperVent Air Eliminator - Optimal air removal from hydronic systems. Eliminates annoying gurgling sounds. Debris baffle to control dirt fouling and prevent failure. Dial-Set Boiler Fill Valve And Backflow Preventer - Easy dial-set technology allows simple output pressure setting in psi. 1/4" NPT port on side for optional gauge. Includes union nut, sweat, and threaded tailpiece.

The Wolverine Brass 4.5 gallon hydronic heating expansion tank has a cold rolled steel tank with 1/2" NPT stainless steel connections. The expansion tank controls the thermal expansion forces within hydronic (forced hot water) heating systems keeping the system pressures below the relief valve settings. The tank utilizes a heavy duty diaphragm to separate the water from the air cushion. The product comes with a factory pre-set pressure of 12 psi with a max operating pressure of 150 psi and a max air-charge of 80 psi. The tank has a maximum operating temperature of 240°F. Wolverine Brass portable water expansion tanks are certified to ANSI Z1088 and have a 6 year warranty.

For use with hydronic heating systems

4.5 gallon tank volume

Maximum Operating Pressure of 150 psi

Maximum Temperature of 240°F

Maximum Air-Charge 80 psi

UPC certified to ANSI Z1088

6-year warranty

The Wolverine Brass 2.1 gallon hydronic heating expansion tank has a cold rolled steel tank with 1/2" NPT stainless steel connections. The expansion tank controls the thermal expansion forces within hydronic (forced hot water) heating systems keeping the system pressures below the relief valve settings. The tank utilizes a heavy duty diaphragm to separate the water from the air cushion. The product comes with a factory pre-set pressure of 12 psi with a max operating pressure of 150 psi and a max air-charge of 80 psi. The tank has a maximum operating temperature of 210°F. Wolverine Brass portable water expansion tanks are certified to ANSI Z1088 and have a 6 year warranty.

For use with hydronic heating systems

2.1 gallon tank volume

Maximum Operating Pressure of 150 psi

Maximum Temperature of 210°F

Maximum Air-Charge 80 psi

UPC certified to ANSI Z1088

6-year warranty

The Honeywell Boiler Trim Kit is all you need for your hydronic needs. Save time by ordering one item instead of several different parts. It's a complete time saving solution in one handy box! Kit Includes: Expansion Tank - Welded, not clamped, for longer leak-proof life, 4.4 gal tank. Butyl diaphragm to separate the air from the system water. Check Valves - Allows replacement of expansion tank and/or air vent without draining the heating system. SuperVent Air Eliminator - Optimal air removal from hydronic systems. Eliminates annoying gurgling sounds. Debris baffle to control dirt fouling and prevent failure. Dial-Set Boiler Fill Valve And Backflow Preventer - Easy dial-set technology allows simple output pressure setting in psi. 1/4" NPT port on side for optional gauge. Includes union nut, sweat, and threaded tailpiece.

All boiler accessories in one kit: Press PV SuperVent® Air Eliminator, NK300 Boiler Feed Combination, and Expansion Tank with Service Check Valve

Simple install with Press fittings

Accessories are rebuildable for maintenance

Ideal for new installs and maintenance requests

Volume: 4.4 gal (16.7 L)

The Honeywell Boiler Trim Kit is all you need for your hydronic needs. Save time by ordering one item instead of several different parts. It's a complete time saving solution in one handy box! Kit Includes: Expansion Tank - Welded, not clamped, for longer leak-proof life, 4.4 gal tank. Butyl diaphragm to separate the air from the system water. Check Valves - Allows replacement of expansion tank and/or air vent without draining the heating system. SuperVent Air Eliminator - Optimal air removal from hydronic systems. Eliminates annoying gurgling sounds. Debris baffle to control dirt fouling and prevent failure. Dial-Set Boiler Fill Valve And Backflow Preventer - Easy dial-set technology allows simple output pressure setting in psi. 1/4" NPT port on side for optional gauge. Includes union nut, sweat, and threaded tailpiece.

All boiler accessories in one kit: Press PV SuperVent® Air Eliminator, NK300 Boiler Feed Combination, and Expansion Tank with Service Check Valve

Simple install with Press fittings

Accessories are rebuildable for maintenance

Ideal for new installs and maintenance requests

Volume: 4.4 gal (16.7 L)

The Wolverine Brass 4.5 gallon potable water expansion tank has a carbon steel tank with 3/4" NPT stainless steel connections. The expansion tank controls the thermal expansion forces within hot water heating systems as water heats up and prevents system pressure from getting to high. The tank utilizes a heavy duty diaphragm to prevent corrosion and waterlogging. The product comes with a factory pre-set pressure of 35 psi with a max operating pressure of 150 psi and a max air-charge of 80 psi. Wolverine Brass portable water expansion tanks are certified to ANSI Z1088 & NSF 61 and have a 6 year warranty.

4.5 gallon tank volume

For use with potable water systems

Maximum Temperature of 200°F

Maximum Operating Pressure of 150 psi

UPC certified to ANSI Z1088 & ANSI/NSF 61

Maximum Air-Charge 80 psi

6-year warranty

The Honeywell Boiler Trim Kit is all you need for your hydronic needs. Save time by ordering one item instead of several different parts. It's a complete time saving solution in one handy box! Kit Includes: Expansion Tank - Welded, not clamped, for longer leak-proof life, 4.4 gal tank. Butyl diaphragm to separate the air from the system water. Check Valves - Allows replacement of expansion tank and/or air vent without draining the heating system. SuperVent Air Eliminator - Optimal air removal from hydronic systems. Eliminates annoying gurgling sounds. Debris baffle to control dirt fouling and prevent failure. Dial-Set Boiler Fill Valve And Backflow Preventer - Easy dial-set technology allows simple output pressure setting in psi. 1/4" NPT port on side for optional gauge. Includes union nut, sweat, and threaded tailpiece.

The Honeywell Boiler Trim Kit is all you need for your hydronic needs. Save time by ordering one item instead of several different parts. It's a complete time saving solution in one handy box! Kit Includes: Expansion Tank - Welded, not clamped, for longer leak-proof life, 4.4 gal tank. Butyl diaphragm to separate the air from the system water. Check Valves - Allows replacement of expansion tank and/or air vent without draining the heating system. SuperVent Air Eliminator - Optimal air removal from hydronic systems. Eliminates annoying gurgling sounds. Debris baffle to control dirt fouling and prevent failure. Dial-Set Boiler Fill Valve And Backflow Preventer - Easy dial-set technology allows simple output pressure setting in psi. 1/4" NPT port on side for optional gauge. Includes union nut, sweat, and threaded tailpiece.

The Flexconsole provides secure wall mounting for expansion tank installations. Using the Flexconsole, the expansion tank attaches to the connection part "B" for a secure vertical mounting position. The system pipe is connected to the Flexconsole at the connection part "A". The Flexconsole completes the expansion tank installation for your hydronic heating or domestic hot water system.

Professional finish to expansion tank installations

Only suitable for hydronic systems

Suitable for water, mas 50% glycol

Temperature range 14 to 248 F

Min 2.9 PSI, Max 145 PSI working pressure

The Honeywell NK300S Boiler Feed Combination serves as a boiler fill valve used in closed loop heating systems. The NK300S is a (re)filling combination valve that contains an integrated pressure reducing valve, strainer, double check backflow preventer with air vent (to protect potable water supply against back flow of heating water into supply pipe), two shut-off ball valves, pressure gauge, and conveniently located test ports for easy inspections and check out.

Optimal protection of the potable water supply system

Pressure reducing valve with inlet pressure balancing - inlet pressure fluctuation does not influence the outlet pressure

Outlet pressure adjustable and directly visible on the pressure gauge

Low maintenance effort - cartridge insert and valve insert are completely replaceable

Includes: Boiler fill shut off valve, double check backflow preventer with air vent and discharge connection, valve cartridge, integrated 200 micron strainer, a check valve, pressure reducing valve with valve insert, adjustment spring, and pressure gauge