Hold-Down Pipe Clamps
Hold-down pipe clamps are used in applications where you would like to either 1.) anchor the pipe in position or 2.) permit axial movement of the pipe. Slide plates, such as PTFE, 25% glass filled or graphite, can be incorporated into the design to reduce the friction between the pipe and clamp.
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More FAQs…
GENERAL DIMENSIONS & SPECIFICATIONS
- Fig. HD-1: Anchor Type Hold-Down
- Fig. HD-2: Hold-Down for Lateral Restraint
- Fig. HD-3: Arrestor Type Hold-Down
Fig. HD-1: Anchor Type Hold-Down
For Pipe Sizes 2-6 inclusive | For Pipe sizes 8-36 inclusive |
MATERIAL: Carbon steel
FINISH: Black or galvanized
TEMP: 750°F
APPLICATIONS: Fig. PTP HD-1 is an anchor type hold down. This hold down is generally used on pipe lines where little or no insulation is required.
ORDERING: Specify figure number, pipe size and description.
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 |
Fig. HD-2: Hold-Down for Lateral Restraint
MATERIAL: Carbon steel
FINISH: Black or galvanized
TEMP: 400°F
APPLICATIONS: Fig. PTP HD-2 is a restraint type hold down. The clamp radius as well as the base is lined with PT&P’s PTFE, 25% glass filled, slide plate, allowing axial movement while restraining lateral movement. It is generally used on compressor lines where temperature is high and thermal movement is great.
ORDERING: Specify figure number, pipe size and description.
PIPE SIZE | A | B | C | D | E | F | G | R | T |
---|---|---|---|---|---|---|---|---|---|
2 | 9 5/8 | 3 9/16 | 2 1/2 | 3 9/16 | 3/4 | 2 1/2 | 1 1/4 | 1 1/4 | 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 13/16 | 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 5/16 | 1/4 |
6 | 14 1/2 | 6 | 6 3/4 | 3 7/8 | 2 7/8 | 4 | 1 1/4 | 3 3/8 | 3/8 |
8 | 16 1/2 | 6 5/8 | 8 3/4 | 3 7/8 | 3 7/8 | 4 | 1 1/4 | 4 3/8 | 3/8 |
10 | 18 5/8 | 8 1/16 | 10 7/8 | 3 7/8 | 4 15/16 | 4 | 1 1/4 | 5 7/16 | 3/8 |
12 | 21 3/4 | 9 5/8 | 12 7/8 | 4 7/16 | 5 15/16 | 4 | 1 1/4 | 6 7/16 | 1/2 |
14 | 23 | 10 1/4 | 14 1/8 | 4 7/16 | 6 9/16 | 6 | 1 3/8 | 7 1/16 | 1/2 |
16 | 25 | 11 1/4 | 16 1/8 | 4 7/16 | 7 9/16 | 6 | 1 3/8 | 8 1/16 | 1/2 |
18 | 27 | 12 1/4 | 18 1/8 | 4 7/16 | 8 9/16 | 6 | 1 3/8 | 9 1/16 | 1/2 |
20 | 29 | 13 1/4 | 20 1/8 | 4 7/16 | 9 9/16 | 6 | 1 3/8 | 10 1/16 | 1/2 |
24 | 33 | 15 1/4 | 24 1/8 | 4 7/16 | 11 9/16 | 6 | 1 3/8 | 12 1/16 | 1/2 |
30 | 39 | 18 1/4 | 30 1/8 | 4 7/16 | 14 9/16 | 6 | 1 3/8 | 15 1/16 | 1/2 |
36 | 45 | 21 1/4 | 36 1/8 | 4 7/16 | 17 9/16 | 6 | 1 3/8 | 18 1/16 | 1/2 |
Fig. HD-3: Arrestor Type Hold-Down
MATERIAL: Carbon steel
FINISH: Galvanized
TEMP: 200°F
APPLICATIONS: Fig. PTP HD-3 is an arrestor type hold down. This hold down is actually a restraint that is used when there is very low thermal movement. Its radius is lined with a belting material that is well designed to absorb shock from vibration. This type is generally used on compressor lines or similar application.
ORDERING: Specify figure number, pipe size and description.
NOTE: Belting material remains impervious to heat up to 200°F.
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 |
PT&P’s entire range of Hold-Down Pipe Clamps can be integrated with TPI clips and rods, as well as vibration pads.

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