Honeywell TK300 Series Catalog Page

Residential Expansion Tanks

TK300 Series Expansion TanksHeating

Honeywell Expansion Tanks are designed to absorb hot water

expansion in closed heating systems. They are equipped with butyl

diaphragms to separate the air from the system water (glycol). The

tanks are a welded, not clamped design. Pre-pressurized at 12 psi,

the tank keeps fluids circulating and maintains minimum system

pressure. Honeywell tanks resist waterlogging, loss of pressure

through relief valve spills, loss of BTUs and reduce circulator

running time. Use the super efficient Honeywell PowerVent or air

vents to remove air and micro-bubbles from the system for

maximum performance.

• Butyl/EPDM diaphragm- 9 times better than natural rubber

• Deep-drawn steel tank

• Controls system pressure

• Air-tight cushion-factory pre-charged to 12 psig and 100% tested

Maximum Operating Temperature: 240 F (115 C)

Materials: steel shell, heavy duty butyl diaphragm

Maximum Operating Pressure: 100 psi (689 kPA)

Connection Type: Male NPT

Comments: Heating

Maximum

Connection

Diameter

Height

Volume

Acceptance Volume

Weight

Product Number

Size (inch)

inch

gal

TK300-15/U

1/2 in.

8 in.

203.2 mm

12 5/8 in.

321 mm

2.0 gal

7.6 L

1 gal

3.8 L

5 b

2.3 kg

TK300-30/U

1/2 in.

11 in.

279 mm

15 1/2 in.

394 mm

4.4 gal

16.7 L

2.5 gal

9.5 L

9 b

4.1 kg

TK300-60/U

1/2 in.

11 in.

279 mm

23 in.

584 mm

7.6 gal

28.8 L

2.5 gal

9.5 L

14 lb

6.4 kg

TK300-90/U

1/2 in.

15 3/8 in.

390.5 mm

21 in.

533 mm

14.0 gal

53.1 L

11.5 gal

40.1 L

23 lb

10.4 kg

Expansion Tank Sizing based on BTU’s

Boiler

Type of Radiation

Net Output in 1000’s of

Finned Tube Baseboard

Convectors or

Radiators Cast Iron

Baseboard Cast Iron

BTU/Hr

or Radiant Panel

Unit Heaters

MBH

Use Model

TK300-15

TK300-30

TK300-60

100

TK300-30

TK300-60

125

TK300-30

TK300-60

TK300-90

150

TK300-30

TK300-60

TK300-90

175

TK300-60

XPS-030V

200

TK300-60

XPS-030V

250

TK300-60

TK300-90

XPS-030V

XPS-040V

300

TK300-90

XPS-030V

XPS-040V

350

XPS-030V

XPS-040V

XPS-060V

400

XPS-030V

XPS-040V

XPS-060V

230

customer.honeywell.com

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