Type C.B./S.T. C.B./S.T.

Type C.B./S.T.

This Rotary (C.B.) Union is fitted with an Adaptor suitable for double flow with a stationary centre tube. This gives flow areas through the centre tube and annulus. Centre tubes are only provided if ordered. The centre tube is fixed to the Rotary (C.B.) Union end by means of a screw thread shown as dimension “O”.

Flow can pass in through the centre tube and return through the annulus or be reversed. For steam applications, a typical example of which is the centre tube is curved to reach the condensate in the bottom of the cylinder

Type C.B./S.T. for double flow, stationary centre tube.

 

Nominal
size
Part No
8 (¼”) 14646/M – R ou L
10 (3/8″) 14640/M – R ou L
15 (½”) 14525 – R ou L
20 (¾”) 14523 – R ou L
25 (1″) 14386 – R ou L
32 (1¼”) 14488 – R ou L
R, L depend on the direction of rotation

 

Rotary (C.B.) Unions – Dimensions

Nominal
size
A, B & N C D E F G & P H I O Q S T V W
8 (¼”) G.¼” 6 117 94 22 11 30 57 M5 x 0.8 6 4.75/4.72 25 24 44
10 (3/8″) G.3/8″ 10 121 97 25 13 30 57 M6 x 1.0 6 6.35/6.32 25 24 44
15 (½”) G.½” 13 167 130 29 16 44 83 G.1/8″ 6 9.52/9.50 40 38 63
20 (¾”) G.¾” 18 173 133 32 19 44 83 G.¼” 10 12.70/12.67 40 38 63
25 (1″) G.1″ 22 210 162 48 22 54 105 G.3/8″ 10 15.87/15.85 45 43 83
32 (1¼”) G.1¼” 30 238 181 51 25 70 121 G.½” 13 19.05/19.02 50 58 95
Dimensions in millimetres


‘G’ is the designation for parallel pipe threads to BS2779 and ISO 228/1