DOUBLE STUDDED ADAPTER FLANGES (DSAF)
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DOUBLE STUDDED ADAPTER FLANGES (DSAF)
Sizes: 1-13/16” to 30”
Pressure Ratings: 2,000 to 20,000 PSI
Inlays: Stainless Steel & Inconel
Services: Standard &H2S (NACE MR 0175)
PSL Level: UptoPSL-4
These products are supplied as per customer requirement of PSL level, material class as per API 6A and temperature class as per API 6A/16A
They come with full material traceability documents
Temperature Ratings
| Temperature Classification | Operating Range | |||
|---|---|---|---|---|
| °C | °F | |||
| min, | max, | min. | max. | |
| K | -60 | 82 | -75 | 180 |
| L | -46 | 82 | -50 | 180 |
| N | -46 | 60 | -50 | 140 |
| P | -29 | 82 | -20 | 180 |
| S | -18 | 60 | 0 | 140 |
| T | -18 | 82 | 0 | 180 |
| U | -18 | 121 | 0 | 250 |
| V | 2 | 121 | 35 | 250 |
| X | -18 | 180 | 0 | 350 |
| Y | -18 | 345 | 0 | 350 |
Material Requirements
| Material Class | Minimum Material Requirements | |
|---|---|---|
| AA | General Service | Carbon or low-alloy steel |
| BB | General Service | Carbon or low-alloy steel |
| CC | General Service | Stainless steel |
| DD | Sour Service | Carbon or low-alloy steel |
| EE | Sour Service | Carbon or low-alloy steef |
| FF | Sour Service | Stainless steel |
| HH | Sour Service | CRAs |
- As defined by ISO 15156 (all parts) (NACE MR0175)
- In accordance with IS015156 (all parts) (NACE MR0175)
- CRA required on retained fluid-wetted surfaces only, CRA
cladding of low-alloy or stainless steel is permitted. - CRA as defined in IS015156 (all parts) (NACE MR0175)
definition of CRA does not apply
Temperature Ratings
| Temperature Classification | Operating Range | |||
|---|---|---|---|---|
| (°C) | (°F) | |||
| min. | max. | min. | max. | |
| T-0/250 | -18 | 121 | 0 | 250 |
| T-20/250 | -29 | 121 | -20 | 250 |
| T-75/250 | -59 | 121 | -75 | 250 |
| T-0/350 | -18 | 176 | 0 | 350 |
| T-20/350 | -29 | 176 | -20 | 350 |
| T-75/350 | -59 | 176 | -75 | 350 |
