Clamp
Clamp interface is one of the most common way of connection,the valve in the pipeline easily installed and remove. Clamp interface is generally designed to connect face to face, to prevent leakage, no cracks.
Clamp face has a machined into the annular groove, when used with a special molding of EPDM or PTFE gasket to seal material.Washer is placed in the middle of two clamp, use a chuck clamping band, make whole interface is completely sealed.
Generally speaking, the clamp on the butt welded to the valve interface, then according to the requirements of the valve body surface polishing and polishing.
After welding, 100% of the hoop end passes through the visual inspection and pressure test, for all the international standard pipe, can be welding corresponding card hoop.
If the connection card hoop don’t match each other, may lead to deformation of interface or the steps, there is no guarantee that the emptying function of
the valve.
If it can be properly installed with a clamp valve, after installation of piping systems will be smooth, no cracks, and self aligned connection, thus reducing the
pipeline was the risk of contamination, maximum limit reduces the medium disorder and system pressure drop.
| The clamp mouth interface standardsPipe diameter interface standards | Similar to IS0 2852 ISO 1127 |
DIN 32676 DIN 11850 | ASME BPE | ADME BPE | SMS 3017 SMS 3008 | ||||||||||||
| Standard FtF | DIN EN 558-1 | DIN EN 558-1 | DIN EN 558-1 | ASME BPE DT-V-1 | DIN EN 558-1 | ||||||||||||
| DN | NPS | MA | L3 | d2 | d1 | L3 | d2 | d1 | L3 | d2 | d1 | L3 | d2 | d1 | L3 | d2 | d1 |
| 8 | 1/4 | 10 | *63.5 | 10.3 | 25.2 | — | — | — | — | — | — | 63.5 | 4.57 | 25.2 | — | — | — |
| 10 | 3/8 | 10 | — | — | — | *63.5 | 10.0 | 34.0 | — | — | — | 63.5 | 7.8 | 25.2 | — | — | — |
| 15 | 1/2 | 20 | 108 | 18.1 | 50.5 | 108.0 | 16.0 | 34.0 | 108.0 | 9.4 | 25.2 | 101.6 | 9.4 | 25.2 | — | — | — |
| 20 | 3/4 | 20 | 117 | 23.7 | 50.5 | 117.0 | 20.0 | 34.0 | 117.0 | 15.8 | 25.2 | 101.6 | 15.8 | 25.2 | — | — | — |
| 25 | 1 | 25 | 127 | 29.7 | 50.5 | 127.0 | 26.0 | 50.5 | 127.0 | 22.1 | 50.5 | 114.3 | 22.1 | 50.5 | 127.0 | 22.6 | 50.5 |
| 32 | 1 1/4 | 40 | 146 | 38.4 | 50.5 | 146.0 | 32.0 | 50.5 | — | — | — | — | — | — | 146.0 | 31.3 | 50.5 |
| 40 | 1 1/2 | 40 | 159 | 44.3 | 64 | 159.0 | 38.0 | 50.5 | 159.0 | 34.8 | 50.5 | 139.7 | 34.8 | 50.5 | 159.0 | 35.6 | 50.5 |
| 50 | 2 | 50 | 190 | 56.3 | 77.5 | 190.0 | 50.0 | 64.0 | 190.0 | 47.5 | 64.0 | 158.8 | 47.5 | 64.0 | 190.0 | 48.6 | 64.0 |
| 65 | 2 1/2 | 80 | 216 | 72.1 | 91 | 216.0 | 66.0 | 91.0 | 216.0 | 60.2 | 77.5 | *222.3 | 60.2 | 77.5 | 216.0 | 60.3 | 77.5 |
| 80 | 3 | 80 | 254 | 84.3 | 106 | 254.0 | 81.0 | 106.0 | 254.0 | 72.9 | 91.0 | 222.3 | 72.9 | 91.0 | 254.0 | 72.9 | 91.0 |
