How to choose the right clamp

Single jaw

1- For a special pipe whose outer diameter we know.

2- Sizes less than 300 ND or equal to 300 ND

3- Paying attention to the tolerance of 7 to 11 mm single jaw clamps

Two jaws

1- For several types of pipes or one type of pipe with different classes

2- Tolerance of 20 to 22 mm

3- For pipes up to 500 ND size

4- In places where it is difficult to close the single jaw clamp

Three jaws

1- For several types of pipes or one type of pipe with different classes

2- Tolerance of 30 to 33 mm

3- For pipes from size 250 ND to 1000 ND

4- Pipes with working pressure less than 6 times

5- For pipes with larger sub

Several jaws

For pipes from 1000 ND to 2000 ND

Emergency box clamp

1- For pipes with external diameter from 213 to 669 mm

2- In places where the outer diameter of the pipe is not known

3- Use when necessary without knowing the outer diameter of the pipe before measuring the diameter of the pipe

Branches

1- According to the size of the branch

2- Depending on the type of milk used

3- According to the outer diameter of the pipe to be branched

Notes when using spa repair clamps

1- The length of the clamp should be at least equal to the outer diameter of the pipe.

2- If the clamp is used to repair cracks and holes on the pipe, the length of the clamp should be 150 to 200 mm greater than the length of the crack or hole.

Calculate the length of the clamp

A: Crack or hole length (length of accident site)

B: Add clamp length on each side of the hole

The formula for calculating the minimum clamp length in this case is:

A + 2B: Minimum clamp length (L)

The excess length B on each side of the hole or crack is as follows according to the diameter of the pipe:		Table of recommended minimum clamp length according to the nominal diameter of the pipe:
Minimum excess length on each side (B)	Nominal pipe diameter mm (ND)	Clamp length (L)	Nominal pipe diameter mm (ND)
50 mm	40-80	150mm	50-80
65mm	100-200	200mm	100-200
100mm	225-300	300mm	225-300

3- If the clamp is used to repair PVC, PE and plastic pipes, the length of the clamp should be 50% more and the screw tightening force should be 50% less.

4- The maximum distance between the end of the two pipes should not be more than 10 mm (the maximum allowable distance between the two pipes is 10 mm)

5- The maximum permissible axis deviation of the two pipes is 2 degrees.

6- The maximum allowable displacement of two pipes is 3 mm.

How to choose the right clamp

Notes when using spa repair clamps

Calculate the length of the clamp

Where are we?