BK Joint II

The pipe end is flared outward with a dedicated expander. Tightening the fitting body and the pipe‑side cap nut to the specified position compresses the sealing element, delivering strong pull‑out resistance and a reliable watertight seal.

Applications

Cold/Hot water supply, chilled & heated water, cooling water, and other media.

*Not for steam piping (supply/return).
Allowable conditions for compressed air, ozone,inert gases, ultrapure water, antifreeze, and vegetable oils may vary with pressure and temperature.

K II 90E

Sizes / Nominal diameter (SU)

13

20

25

30

40

50

60

K II 45E

Sizes / Nominal diameter (SU)

13

20

25

30

40

50

60

K II 90SE

Sizes / Nominal diameter (SU)

20

25

30

40

50

60

K II 45SE

Sizes / Nominal diameter (SU)

20

25

30

40

50

60

K II S

Sizes / Nominal diameter (SU)

13

20

25

30

40

50

60

K II MA

Sizes / Nominal diameter (SU)

13✕1/2	20✕1/2	20✕3/4	25✕1	30✕1	30✕1¼
40✕1¼	40✕1½	50✕1½	50✕2	60✕2	60✕2½

K II FA

Sizes / Nominal diameter (SU)

13✕1/2	20✕1/2	20✕3/4	25✕1	30✕1	30✕1¼
40✕1¼	40✕1½	50✕1½	50✕2	60✕2	60✕2½

K II WE

Sizes / Nominal diameter (SU)

13✕1/2

20✕1/2

20¾

25✕1

K II T

Sizes / Nominal diameter (SU)

13	20	20✕13	25	25✕13	25✕20	30	30✕20
30✕25	40	40✕20	40✕25	40✕30	50	50✕20	50✕25
50✕30	50✕40	60	60✕20	60✕25	60✕30	60✕40	60✕50

*We also stock items and sizes not listed here. Please feel free to contact us.