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STYLES 3150 / 3250

The UNA-FLEX “SUPER-QUIET” rubber vibration/sound absorbers are specially designed with molded rubber flanged ends with bolt holes to accommodate the standard steel flanges.  This UNA-FLEX “SUPER-QUIET” vibration and sound absorber will be furnished with/or without helical wire reinforcement. For either suction or discharge applications, special tubes can be compounded to meet your unique service conditions.

 

SPECIFY UNAFLEX7 FLEXIBLE CONNECTORS

STYLE 3150
STYLE 3250
STYLE3150HT
STYLE 3250HT
150# W.P.
250# W.P.
150# W.P.
250# W.P.
180ºF
180ºF
250ºF
250ºF

PERCENTAGE OF REDUCTION OF VIBRATION INPUT WITH FREQUENCY AND PRESSURE AS COMPARED TO STEEL PIPE

Center Freq. Hz
8" I.D. x 24" F-F
Vibration Joint
10 psig
50 psig
80 psig
440
87%
91%
93%
68
95%
96%
99%
125
98%
99%
99%
250
96%
97%
99%
500
91%
93%
94%
1000
82%
91%
96%
2000
99%
99%
99%
4000
99%
99%
99%
8000
97%
97%
98%

Example: If a steel piping system had a major vibration frequency of 1,000 Hz at 50 PSIG and and 8" rubber expansion joint was installed in the pipeline, the percentage of reduction of vibration would be 96%

Note: Above data taken from Fluid Sealing Association Handbook.

Joint Size I.D. (in.)

Face to Face

STYLE 3150 (150 psi U.S.A. Drilling
Style 3250 (250 psi U.S.A. Drilling)
Min. (in.)
Max. (in.)
Ring I.D. (in.)
Flange
Bolt circle diam. (in.)
Bolt Holes
Ring
I.D.
(in.)

Flange

Bolt circle diam. (in.).
Bolt Holes
Diam. (in.)
Thick-ness (in.)
No.
Diam. (in.)
Diam.
(in.)
Thick
(in.)
No.
Diam.
(in.)
1 1/2
12
24
2 7/8
5
11/16
3-7/8
4
5/8
2-7/8
6-1/8
23/32
4-1/2
4
7/8
2
12
24
3-5/8
6
11/16
3-3/4
4
3/4
3-5/8
6-1/2
23/32
5
8
3/4
3
12
36
4-5/8
7-1/2
27/32
6
4
3/4
4-5/8
8-1/4
27/32
6-5/8
8
7/8
4
12
36
5-7/8
9
27/32
7-1/2
8
3/4
5-7/8
10
7/8
7-7/8
8
7/8
5
12
36
6-7/8
10
15/16
8-1/2
8
7/8
6-7/8
11
15/16
9-1/4
8
7/8
6
18
36
7-7/8
11
31/32
9-1/2
8
7/8
7-7/8
12-1/2
15/16
10-5/8
12
7/8
8
24
48
9-7/8
13-1/2
31/32
11-3/4
8
7/8
9-7/8
15
1-1/16
13
12
1
10
24
48
12-1/8
16
1-3/16
14-1/4
12
1
12-1/8
17-1/2
1-11/32
15-1/4
16
1-1/8
12
24
48
14-1/2
19
1-7/32
17
12
1
14-1/2
20-1/2
1-11/32
17-3/4
16
1-1/4

IMPORTANT: UNAFLEX® Vibration and Sound Absorbers are not designed to accommodate the movement in a piping system caused by temperature change or other conditions. See Spool-Type Expansion Joints for such applications.

 

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