Clamp-on seals for flange-mounting
The clamp-on seal is completely integrated in the process line. It is particularly suitable for flowing and highly viscous media.
The clamp-on remote seal consists of a cylindrical jacket into which a thin-walled pipe is welded. It is clamped directly between two flanges in the pipeline.
Clamp-on seals for flange-mounting | |
Nominal diameter | Nominal pressure |
| PN 6 ... PN 100 |
| PN 6 ... PN 100 |
| PN 6 ... PN 100 |
| PN 6 ... PN 100 |
| PN 6 ... PN 100 |
| Class 150 … class 2500 |
| Class 150 … class 2500 |
| Class 150 … class 2500 |
| Class 150 … class 2500 |
| Class 150 … class 2500 |
Process connection | Flange to EN 1092‑1 or ASME B 16.5 |
Sealing face | To EN 1092‑1, form B1 or to ASME B16.5 RF 125 ... 250 A or RFSF |
Materials | |
| Stainless steel 1.4404/316L |
| Stainless steel 1.4404/316L |
| Stainless steel 1.4404/316L |
| |
| |
| |
Monel 400, mat. no. 2.4360 | |
Hastelloy C276, mat. no. 2.4819 | |
Hastelloy C4, mat. no. 2.4610 | |
Tantalum | |
| Stainless steel 1.4571/316Ti |
| Spiral hose made of stainless steel, mat. no. 1.4301/316 |
Capillary | |
| Max. 10 m (32.8 ft) |
| 2 mm (0.079 inch) |
| 150 mm (5.9 inch) |
Filling liquid | Silicone oil M5 |
Silicone oil M50 | |
High-temperature oil | |
Halocarbon oil | |
Food oil (FDA-listed) | |
Glycerin/water (not suitable for uses in low-pressure range) | |
Permissible Ambient Temperature | See pressure transmitters, see filling liquid |
Weight | Approx. 4 kg (8.82 lb) |
Certificates and approvals | |
Classification according to pressure equipment directive (PED 97/23/EC) | For gases of fluid group 1 and liquids of fluid group 1; complies with the requirements of article 3, paragraph 1 (appendix 1); assigned to category III, conformity evaluation module H by the TÜV Nord |
The measured pressure is transferred from the diaphragm to the filling liquid and passes either directly or through the capillary to the measuring chamber of the pressure transmitter. The interior of the diaphragm seal and of the capillary, as well as the measuring chamber of the pressure transmitter, are filled gas-free by the filling liquid.
Note:
When operating in the low-pressure range, also during commissioning, it is recommended to use a vacuum-proof remote seal (see Ordering data).
Clamp-on seal for flange-mounting, connected to SITRANS P pressure transmitter, dimensions in mm (inch)
Connection to EN 1092-1
DN | PN | D | Mb | L | H |
|---|---|---|---|---|---|
mm (inch) | bar | mm (inch) | mm (inch) | mm (inch) | mm (inch) |
25 | 6 … 100 | 63 | 28,5 | 60 | 78,5 |
40 | 6 … 100 | 85 | 43 | 60 | 89,5 |
50 | 6 … 100 | 95 | 54,5 | 60 | 92,5 |
80 | 6 … 100 | 130 | 82,5 | 60 | 112 |
100 | 6 … 100 | 150 | 107 | 60 | 122 |
Connection to ASME B16.5
DN | Class | D | Mb | L | H |
|---|---|---|---|---|---|
(inch) | mm (inch) | mm (inch) | mm (inch) | mm (inch) | |
(inch) | (inch) | (inch) | (inch) | ||
1 | 150 … 2500 | 63 | 28,5 | 60 | 78,5 |
(2.48) | (1.12) | (2.36) | (3.1) | ||
1½ | 150 … 2500 | 85 | 43 | 60 | 86 |
(3.35) | (1.69) | (2.36) | (3.4) | ||
2 | 150 … 2500 | 95 | 54,5 | 60 | 94,5 |
(3.74) | (2.15) | (2.36) | (3.72) | ||
3 | 150 … 2500 | 130 | 82,5 | 60 | 112 |
(5.12) | (3.25) | (2.36) | (4.4) | ||
4 | 150 … 2500 | 150 | 107 | 60 | 122 |
(5.9) | (4.21) | (2.36) | (4.8) |
