Piping Technology and Products Logo

Piping Technology & Products

Loading
 
  Experienced Manufacturer of Pipe Supports since 1978
Call Us: (713) 731-0030 Toll-Free: (800) 787-5914   Se habla español
 

Hold-down Pipe Clamps Homepage > Technical Bulletins > Hold-downs
request-a-quote
 
[PDF] Version
Stresses in Clamp and Saddle
Image of some hold downs. Vibrations produced by rotating machinery are very common for industrial piping systems. Bracing devices can be used to cope with vibration. Hold downs are one of the most widely used pipe support devices to restrain or dampen pipe vibration. A common location for applying a hold down exists near a compressor. The objective is to limit vibration caused by rotating equipment in order to avoid damage to the surrounding piping system. The hold down restrains the vibration introduced by the compressor as it compresses the gases in the pipe line. Hold downs are effective for the control of vibration and/or movement.

Vibration Control: PT&P’s Capabilities

Pipe Technology & Products, Inc. can custom design and fabricate hold downs for any pipe size application. In additional to hold downs, PT&P also offers other types of vibration control devices to accommodate different pipe orientations and locations:

Types:
Image of a close view on a anchor type hold down

Anchor Type (PTP HD-1)

Generally used on pipe lines where little or no insulation is required

Temperature: 750°F

Anchor Type Hold downs

Anchor Type (PTP HD-1)
APPLICATION: The PTP Fig. HD-1 is our anchor type hold down. This hold down is generally used in pipe lines where little or no insulation is required.
Material: Carbon Steel
Temperature: 750°F
Finish: Black or galvanized
Temperature: 200°F

Diagram of the PTP HD-1 Hold down
Pipe Size
A
B
C
D
E
R
T
2
9 3/8
3  3/16
2 3/8
3 1/2
15/16
1  3/16
1/4
3
10 1/2
3 3/4
3 1/2
3 1/2
1 1/2
1 3/4
3/8
4
11 1/2
4 1/4
4 1/2
3 1/2
2
2 1/4
3/8
6
13 5/8
5  5/16
6 5/8
3 1/2
3  1/16
3  5/16
3/8
8
16
6 1/2
8 5/8
3 11/16
4  1/16
4  5/16
3/8
10
19
8
10 3/4
4 1/8
5 1/8
5 3/8
3/8
12
21
9
12 3/4
4 1/8
6 1/8
6 3/8
1/2
14
23
10
14
4 1/2
6 3/4
7
1/2
16
25
11
16
4 1/2
7 3/4
8
1/2
18
27
12
18
4 1/2
8 3/4
9
1/2
20
29
13
20
4 1/2
9 3/4
10
1/2
24
33
15
24
4 1/2
11 3/4
12
1/2
30
39
18
30
4 1/2
14 3/4
15
1/2
36
45
21
36
4 1/2
17 3/4
18
1/2
 

Anchor Type (PTP HD-2)
*generally used on compressor lines or similar applications with high temperature and massive thermal movement
*the clamp radius and the base are line with PTFE slide plate, allowing axial movement while restraining lateral movement.
*Temperature: 400°F

Diagram of some anchor type hold downs
Pipe Size
A
B
C
D
E
F
G
R
T
2
9 3/8
3  9/16
2 1/2
3 9/16
3/4
2  1/2
1 1/4
1  5/16
1/4
3
10 3/4
4 1/8
3 5/8
3 9/16
1 5/16
2 1/2
1 1/4
1 7/8
1/4
4
11 3/4
4 5/8
4 5/8
3 9/16
1 13/16
2 1/2
1 1/4
2 3/8
1/4
5
13 7/16
5  7/16
5 11/16
3 7/8
2  7/8
2  1/2
1 1/4
2 15/16
3/8
6
14 1/2
6   
6 3/4
3  7/8
2  7/8
3  1/2
1 1/4
3  7/16
3/8
8
16 1/2
7  9/16
8 3/4
3 7/8
3 7/8
3 1/2
1 1/4
4  7/16
3/8
10
18 5/8
8  1/16
10 7/8
3 7/8
4 15/16   
3 1/2
1 1/4
5 1/2
3/8
12
21 3/4
9 5/8
12 7/8
4 7/16
5 15/16   
3 1/2
1 1/4
6 1/2
1/2
14
23
10 1/4
14 1/8
4 7/16
6 9/16
6
1 3/8
7 1/8
1/2
16
25
11 1/4
16 1/8
4 7/16
7 9/16
6
1 3/8
8 1/8
1/2
18
27
12 1/4
18 1/8
4 7/16
8 9/16
6
1 3/8
9 1/8
1/2
20
29
13 1/4
20 1/8
4 7/16
9 9/16
6
1 3/8
10 1/8
1/2
24
33
15 1/4
24 1/8
4 7/16
11 9/16
6
1 3/8
12 1/8
1/2
30
39
18 1/4
30 1/8
4 7/16
14 9/16
6
1 3/8
15 1/8
1/2
36
45
21 1/4
36 1/8
4  7/16
17  9/16
6
1 3/8
18 1/8
1/2
 
Anchor Type (PTP HD-3)
*generally used on compressor lines or similar applications with low thermal movement
*the clamp radius is lined with a belting material designed to absorb shock from vibration
*Temperature: 200°F
*belting material remains impervious to heat up to 200°F
Diagram of some anchor type hold downs
Pipe Size
A
B
C
D
E
R
T
2
9 7/8
3  7/16
2 7/8
3 1/2
1  3/16
1  7/16
1/4
3
11   
4   
4   
3 1/2
1 3/4
2   
3/8
4
12   
4 1/2
5   
3 1/2
2  1/4
2 1/2
3/8
6
14 1/8
5  9/16
7 1/8
3 1/2
3  5/16
3  9/16
3/8
8
16 1/2
6 3/4
9 1/8
3 11/16
4  5/16
4  9/16
3/8
10
19 1/2
8  1/4
11 1/4
4 1/8
5 3/8
5 5/8
3/8
12
21 1/2
9  1/4
13 1/4
4 1/8
6 3/8
6 5/8
1/2
14
23 1/2
10 1/4
14 1/2
4 1/2
7   
7 1/4
1/2
16
25 1/2
11 1/4
16 1/2
4 1/2
8   
8 1/4
1/2
18
27 1/2
12 1/4
18 1/2
4 1/2
9   
9 1/4
1/2
20
29 1/2
13 1/4
20 1/2
4 1/2
10   
10 1/4
1/2
24
33 1/2
15 1/4
24 1/2
4 1/2
12   
12 1/4
1/2
30
39 1/2
18 1/4
30 1/2
4 1/2
15   
15 1/4
1/2
36
45 1/2
21 1/4
36 1/2
4 1/2
18   
18 1/4
1/2

Mailing: P.O. Box 34506, Houston, TX 77234-4506 Location: 3701 Holmes Road, Houston, TX 77051
Our Subsidiaries: U.S. Bellows: Metallic & Fabric Expansion Joints, Bellows
Sweco Fab: ASME Vessels, Pig Launchers, Spectacle Blinds
 Pipe Shields: Pre-Insulated Pipe Supports, Slides, Guides & Anchors

Fronek Anchor/Darling
: Snubbers, Sway Struts & Sway Braces
Phone: (713) 731-0030 Toll-Free: (800) 787-5914 FAX: (713) 731-8640 info@pipingtech.com

©2017 Piping Technology and Products, Inc. All Rights Reserved. Contact Us | Privacy Policy