Type M.C.T./S.T. M.C.T./S.T.

Type M.C.T./S.T.

This Rotary (M.C.T.) Union is fitted with an Adaptor suitable for double flow utilising 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 (M.C.T.) 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.

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

 


Nominal
size
Part No
with locating spigot
Part No
without locating spigot
8 (¼”) 16311 – R or L 16261 – R or L
10 (3/8″) 16314 – R or L 16264 – R or L
15 (½”) 16317 – R or L 16267 – R or L
20 (¾”) 16320 – R or L 16270 – R or L
25 (1″) 16323 – R or L 16273 – R or L
R, L depend on the direction of rotation

With a locating spigot

Rotary (M.C.T.) Unions – type S.T. – Dimensions
with a locating spigot

Nominal
size
A B C D E F G & P I J
8 (ž”) G.ž” G.1/8″ 6 141 120 37 11 65 178
10 (3/8″) G.3/8″ G.1/8″ 10 146 122 40 13 65 180
15 (―”) G.―” G.ž” 14 171 143 45 16 90 220
20 (ū”) G.ū” G.3/8″ 18 190 155 57 20 90 232
25 (1″) G.1″ G.―” 22 201 163 57 22 115 250

Dimensions in millimetres


Nominal
size
K N O S T U X Y* Z
8 (ž”) G.1/8″ G.ž” M5 4.97/4.95 60 171 10 15 22
10 (3/8″) G.1/8″ G.3/8″ M5 5.97/5.95 60 174 10 20 25
15 (―”) G.ž” G.―” G.1/8″ 9.52/9.50 70 215 13 25 32
20 (ū”) G.3/8″ G.ū” G.ž” 12.70/12.67 70 227 16 30 45
25 (1″) G.―” G.1″ G.3/8″ 15.97/15.95 80 245 20 38 42

*The machine recess dimension should be H7 – ISO 286-2 and BS.EN 20286-2


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

Without a locating spigot

Rotary (M.C.T.) Unions – type S.T. – Dimensions
without a locating spigot

Nominal
size
A B C D E F G & P I J
8 (ž”) G.ž” G.1/8″ 6 176 103 25 11 65 166
10 (3/8″) G.3/8″ G.1/8″ 10 179 106 28 13 65 168
15 (―”) G.―” G.ž” 14 213 126 28 16 90 203
20 (ū”) G.ū” G.3/8″ 18 222 130 31 20 90 207
25 (1″) G.1″ G.―” 22 250 148 42 22 115 235

Dimensions in millimetres


Nominal
size
K N O S T U X Y* Z
8 (ž”) G.1/8″ G.ž” M5 4.97/4.95 60 159 10 15 22
10 (3/8″) G.1/8″ G.3/8″ M5 5.97/5.95 60 162 10 20 25
15 (―”) G.ž” G.―” G.1/8″ 9.52/9.50 70 198 13 25 32
20 (ū”) G.3/8″ G.ū” G.ž” 12.70/12.67 70 202 16 30 45
25 (1″) G.―” G.1″ G.3/8″ 15.97/15.95 80 230 20 38 42

*The machine recess dimension should be H7 – ISO 286-2 and BS.EN 20286-2


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