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Rotary Unions - Swivel Joints - Air Breather Filters - Accessories
 

FILTON Rotary (C.B.) and (C.B.N.) Unions
(carbon bearing)



FILTON Rotary (C.B.) Unions (see C.B.N.)

Presentation Type C.B./B.E. Type C.B./S.T. Type C.B./R.S. Operational Guidelines



FILTON Rotary (C.B.) Unions - Type S.T.
The components with an asterisk rotate with the machine shaft
 
Example : FILTON Rotary (C.B.) Unions
type S.T.
Adaptor, high quality cast iron.
Bellows sub-assembly, brazed stainless steel.
Gaskets.
Seal ring sub-assembly, steel/carbon.
Locking screw, h.t. steel.
Spacer.
Bearing sub-assembly, steel/carbon.
Body, high quality cast iron.
Rotary spindle, steel.
Centre tube, if ordered, to your specification.
Thrust Pad, stainless steel.
Set screw, h.t. steel.

Presentation of Rotary (C.B.) Unions
The Rotary (C.B.) Union is a self contained, self supporting rotary seal for the leak proof transfer of fluids (such as steam, hot water, air or oil) to and from rotating machine shafts.

The type of Rotary Seal fitted to the Rotary (C.B.) Union is a "FILTON BELLOWS SEAL" containing a flexible stainless steel bellows which is self adjusting, eliminating the maintenance common with conventional packed glands. Rotary sealing is created by relative rotation between extremely flat sealing faces (items and ) held in contact by the spring characteristics of the bellows with an additional sealing force created by pressure of the fluid passing through the Rotary (C.B.) Union. The bearing fitted to the Rotary (C.B.) Union is a cylindrical carbon combined journal and thrust bearing in which a hard chromed and ground spindle rotates.

There are 3 variations of the stationary Adaptor end described below :


Type C.B./B.E.
This is a single flow unit and is suitable for transferring fluid in to or out of rotating machines.
Click here to see a typical application.

Type C.B./B.E. for single flow


Nominal
size
Part No.
8 (¼") 14645 - R or L
10 (3/8") 14639 - R or L
15 (½") 14554 - R or L
20 (¾") 14524 - R or L
25 (1") 14545 - R or L
32 (1¼") 14546 - R or L
R, L depend on the direction of rotation


C.B. - Type B.E.


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 shown here, the centre tube is curved to reach the condensate in the bottom of the cylinder. At times the roll neck diameter to length ratio prevents a curved tube being used, in such cases we can provide a Syphon Elbow.

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


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


Type S.T.


Type C.B./R.S.
The Adaptor fitted to this Rotary (C.B.) Union is suitable for a rotating centre tube, which must be located and driven by the machine. Centres tubes are only provided if ordered.

The centre tube rotates in a bush. The centres tube "sealing" system allows a slight internal leakage between the supply and return lines. If these fluids must not mix then an alternative design can be provided. Please ask our Technical Department.
Flow can pass through the centre tube with the return through the annulus or be reversed. A typical application is shown here.

Type C.B./R.S. for double flow,
rotary centre tube


Nominale
size
Part No.
8 (¼") 17215 - R or L
10 (3/8") 17216 - R or L
15 (½") 16658 - R or L
20 (¾") 16660 - R or L
25 (1") 16662 - R or L
32 (1¼") 16664 - R or L
R, L depend on the direction of rotation


Type R.S.


Operational Guidelines
Fluids : Water, steam, mineral oils and heat transfer fluids (but use flanged connections when the temperature exceeds 180°C). All fluids should be clean and free from abrasive particles.

Pressure : 17 bar maximum.

Temperature : 100°C to 300°C (lower temperatures dependant on other conditions).

Speed : 300 r.p.m. up to 50 (2") size, 250 r.p.m. for 65 (2½") and 80 (3"), 200 r.p.m. 90 (3½") and 100 (4"), and 150 r.p.m. for 125 (5") and 150 (6").

More informations ? A question ? Contact us !
FLOW CAPACITY
Nominal
size
Type Water*
m³/h
Steam**
kg/h
Air***
m³/h
8 (¼") BE 0.3 11 11
ST & RS 0.05 3.4 2
10 (3/8") BE 0.8 31 29
ST & RS 0.1 16 4
15 (½") BE 1.7 61 58
ST & RS 0.3 27 10
20 (¾") BE 2.7 101 96
ST & RS 0.6 41 22
25 (1") BE 4.1 151 144
ST & RS 1.8 56 44
32 (1¼") BE 7.6 280 267
ST & RS 2.1 133 74
* Flow at a velocity of 3 m/s (applies also to other liquids)
** Flow at a velocity of 30 m/s and a pressure of 6 bar
*** Flow at a velocity of 15 m/s and a pressure of 6 bar
It is not advisable to combine maximums





FILTON Rotary (C.B.N.) Unions (see C.B.)

Presentation Type C.B.N./B.E. Type C.B.N./S.T. Type C.B.N./R.S. Operational Guidelines




C.B.N. - Type B.E.
The components with an asterisk rotate with the machine shaft
 
Example : FILTON Rotary (C.B.N.) Unions
type B.E.
Adaptor, s.g. iron.
Bellows sub-assembly brazed stainless steel/carbon.
Gaskets.
Spacer, plated steel.
Seal ring, hardened stainless steel
Locking screw, h.t. steel.
Thrust bearing, carbon.
Journal bearing, carbon.
Body, s.g. iron.
Rotary spindle, steel.

Presentation of Rotary (C.B.N.) Unions

The Rotary (C.B.N.) Union is a self contained, self supporting rotary seal for the leak proof transfer of fluids (such as steam, hot water, air or oil to and from rotating machine shafts.

The type of Rotary Seal fitted to the Rotary (C.B.N.) Union is a "FILTON BELLOWS SEAL" containing a flexible stainless steel bellows which is self adjusting ; eliminating the maintenance common with conventional packed glands.
Rotary sealing is created by relative rotation between extremely flat sealing faces (items and ) held in contact by the spring characteristic of the bellows with an additional sealing force created by pressure of the fluid passing through the Rotary (C.B.N.) Union.

The bearings fitted to the Rotary (C.B.N.) Union are separate carbon thrust and journal bearings in which a hard chromed and ground spindle rotates.
There are 3 variations of the stationary Adaptor end described below :


Type C.B.N./B.E.
This is a single flow unit and is suitable for transferring fluid in to or out of rotating machines shafts.
A typical application for this type is shown here.

Type C.B.N./B.E. for single flow


Nominale
size
Part No.
40 (1½") 18101 - R or L
50 (2") 15471 - R or L
65 (2½") 18240 - R or L
80 (3") 15477 - R or L
90 (3½") 16171 - R or L
100 (4") 16174 - R or L
125 (5") 15486.SF - R or L
150 (6") 16704.SF - R or L
R, L depend on the direction of rotation


Type B.E.


Type C.B.N./S.T.
This Rotary (C.B.N.) 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.N.) Union end by means of 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 shown here, the centre tube is curved to reach the condensate in the bottom of the cylinder. At times the roll neck diameter to length ratio prevents a curved tube being used, in such cases we can provide a Syphon Elbow.

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


Nominale
size
Part No.
40 (1½") 18102 - R or L
50 (2") 15472 - R or L
65 (2½") 18241 - R or L
80 (3") 15478 - R or L
90 (3½") 16172 - R or L
100 (4") 16175 - R or L
125 (5") 15487.SF - R or L
150 (6") 16703.SF - R or L
R, L depend on the direction of rotation


Type S.T.


Type C.B.N./R.S.
The Adaptor fitted to this Rotary (C.B.N.) Union is suitable for a rotating centre tube, which must be located and driven by the machine. Centre tubes are only provided if ordered. The centre tube rotates in a carbon bush. The centre tube "sealing" system allows a slight internal leakage between the supply and return lines. If these fluids must not mix then an alternative design can be provided. Please ask our Technical Department.
Flow can pass in through the centre tube with the return through the annulus or be reversed. A typical application is shown by clicking here.

Type C.B.N./R.S. for double flow,
rotary centre tube


Nominale
size
Part No.
40 (1½") 18103 - R or L
50 (2") 15473 - R or L
65 (2½") 18242 - R or L
80 (3") 15479 - R or L
90 (3½") 16173 - R or L
100 (4") 16176 - R or L
125 (5") 15488.SF - R or L
150 (6") 16702.SF - R or L
R, L depend on the direction of rotation


Type R.S.


Operational Guidelines
Fluids : Hot water, steam, mineral oils, heat transfer fluids (but use flanged connections when the temperature exceeds 180°C). All fluids should be clean and free from abrasive particles.

Pression : 17 bar maximum.

Temperature : 100°C to 300°C (lower temperatures dependant on other conditions).

Speed : 300 r.p.m. up to 50 (2") size, 250 r.p.m. for 65 (2½") and 80 (3"), 200 r.p.m. 90 (3½") and 100 (4"), and 150 r.p.m. for 125 (5") and 150 (6").

More informations ? A question ? Contact us !
FLOW CAPACITY
Nominal
size
Type Water*
m³/h
Steam**
kg/h
Air***
m³/h
40 (1½") BE 10.4 381 364
ST & RS 3.8 151 135
50 (2") BE 19.5 717 684
ST & RS 6.3 357 215
65 (2½") BE 30.5 1120 1069
ST & RS 10.8 547 376
80 (3") BE 41.6 1524 1455
ST & RS 14.9 807 511
90 (3½") BE 57.0 2091 1996
ST & RS 23.4 942 818
100 (4") BE 76.6 2807 2679
ST & RS 27.6 982 937
125 (5") BE 112.2 4859 4639
ST & RS 45.3 1617 1544
150 (6") BE 166.3 6997 6680
ST & RS 73.7 2892 2760
* Flow at a velocity of 3 m/s (applies also to other liquids)
** Flow at a velocity of 30 m/s and a pressure of 6 bar
*** Flow at a velocity of 15 m/s and a pressure of 6 bar
It is not advisable to combine maximums


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