The Chicago Plumbing Code

§ 18-29-713.1.1

Stack Sizes for Bedpan Steamers and Boiling Type Sterilizers

(Number of Connections of Various Sizes Permitted to Various-Sized Sterilizer Vent Stacks)

Stack Size (inches)

Connection Size

1 1/2"

2"

1 1/2 a

1

or

0

2 a

2

or

1

2 b

1

or

1

3 a

4

or

2

3 b

2

or

2

4 a

8

or

4

4 b

4

or

4

For SI: 1 inch = 25.4 mm

a) Total of each size.

b) Combination of sizes.