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- PRDS, FRPRDS, PRS, DS. Equipment
- Throttling Devices
- 891-250/450-Ш
891-250/450-Ш
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Production according to TR 3113-003-15365247-2009
They are directly installed behind the globe and throttle valves of PRS, PRDS and FRPRDS
on vertical and horizontal pipeline sections.
Working medium flow direction: from a branch pipe of lesser diameter to a larger one.
Body material:
— steel 12X1МФ or 15Х1М1Ф at the temperatures over 450 °С;
— steel 20, 09Г2С or 15ГС at the temperatures under 450 °С.
Pipeline connection: welded connection.
| d2, mm: | 62 |
| D2, mm: | 325 |
| D1, mm: | 263 |
| H, mm: | 650 |
| L, mm: | 1125 |
| Inlet/Outlet Tp (Tmax), MPa | Inlet/Outlet Pp (PN), MPa | DN, mm | Working Medium | L1, mm | D3, mm | D4, mm | D5, mm | D6, mm | Full Weight, kg | S1, cm2 | S2, cm2 | S3, cm2 | S4, cm2 | S5, cm2 | S6, cm2 |
| 490/440 | 12,0/2,0 | 250 | Steam | 605 | 424 | 465 | 62 | 76 | 320,0 | 182 | 323 | 555 | 0 | 0 | 0 |
S1, S2, S3, S4, S5, S6 - Gird Passage Area, cm2
The throttle devices of series 863, 865, 891, 950, 1040, 1041 are used as uncontrolled throttling elements of PRS, PRDS and FRPRDS.
The throttle devices DN 100/200 of series 1040 and 1041 are respectively included into the composition of steam-generating plants УПГ 50/60 and УПГ 60/160.
The table demonstrates typical throttle devices. However, the majority of throttle devices is individually designed for specific operation conditions.