TEC ARTEC MULTI NOZZLE DESUPERHEATER, HIGH PRESSURE
ASME Standard, Model TECtemp HD
Contact
AVK Industrial Nederland BV
Schorsweg 1 8171 ME Vaassen Netherlands
Probe type desuperheater valve with integrated water control, spray function and tight shut-off. Valve opening by quarter turn (90°) movement of the inner stem. Metal-to-metal ball/seat design with lowest risk of leakages, longest lifetime, low lifecycle costs. Perfect water spray with smallest water droplets by constant pressure difference at injection nozzles over the entire control range. Turn-down ratio up to 250:1. Optimized nozzle opening sequence for thermal shock prevention and optimal evaporation conditions.
The TECtemp HD desuperheater combines water control, atomization and a tight shut-off in one valve. The largest possible number of nozzles and the unique design of the internal parts allow precise control of almost all application scenarios. The TECtemp HD offers maximum safety together with a long service life due to the one-piece and forged body design. Typical installations: Final and interstage desuperheaters on steam boilers, process steam generation, turbine bypass, cooling and condensing process of chemicals (e.g. ammonia, propylene), and LNG.
| Variant 235/2-001 | |
|---|---|
| Material: | Steel |
Features
- Up to 24 sequential opening nozzles
- One-piece forged body design
- Steam pipes from ≥ 3 Inch up to Class 2500
- Steam temperature up to 610 °C
- Lance length up to 750 mm (longer lengths on request)
- Selectable cooling water connection position (90° steps)
- Single or multi-stage pressure reduction
The TECtemp HD is also available in EN standard design and configuration (See series 235/1). The specified data must be considered as guidance only since the desuperheater is a highly configurable product due to its wide range of applications; a specific datasheet with full description of flow characteristics, materials and product configurations will be issued by TEC artec for each individual TECtemp HD desuperheater when operating conditions are known.
Downloads
Components
| 1. | Body | |
| 2. | Packing | |
| 3. | Flange, cooling water | |
| 4. | Packing gland | Stainless Steel 1.4541 Ti-alloy |
| 5. | Plug | Steel 1.5415/1.7380/1.4903 or others |
| 6. | Stem, upper | SS-1.4122/1.4923 hardened |
| 7. | Lower stem | SS-1.4301/1.4923 hardened |
| 8. | Seat ring | SS-1.4122/1.4923 hardened |
| 9. | Bearing bush | Stainless Steel 1.4541 Ti-alloy |
| 10. | Bearing bush | Stainless Steel 1.4541 Ti-alloy |
| 12. | Ring | Stainless Steel 1.4541 Ti-alloy |
| 14. | Bushing | Stainless Steel 1.4122 |
| 15. | Disc | Stainless Steel 1.4122 |
| 16. | Nozzle | Stainless Steel 1.4122 hardened |
| 17. | Swirl | Stainless Steel 1.4541 Ti-alloy |
| 18. | Position indicator | Stainless steel A2-70 |
| 19. | Bridge assembly | Steel |
| 20. | Key | Steel |
| 21. | Snap ring | Spring steel |
| 22. | Stud bolt | Steel 1.7709/1.4980 |
| 23. | Hex nut | Steel 1.7218/1.4980 |
| 27. | Spring | Stainless steel 1.4310 |
| 28. | Gasket | Graphite |
| 29. | Packing rings | Graphite |
| 30. | Flange gasket | Graphite |
| 31. | Bonnet gasket | Graphite |
Test/Approvals
- ASME B16.34; API 598; MSS SP-55 or others
Standards
- ASME B16.34, EN 12516-2, EN 12952
- Flange drilling to ANSI B16.5 or JIS B2220