 Check valves FB41 PURPOSE AND SPHERE OF APPLICATION
Check valves are intended to prevent backflow of working medium in the process lines at chemical and oil-refining plants, as well as at pulp-and-paper milks and other production facilities using fluid, gaseous as well as corrosive working media.
| VALVE DESIGN
The check ball valve consists of the body (1) and two caps (2) bolted together by stud bolts (8) and sealed with joint gaskets (9). When supplying the working medium into the valve (4) the latter is moving within the stop (3) hole compressing the spring (5) and providing the admission of the medium. When cutting off the medium the valve closes under the action of the spring. To provide the leak-proofness of closed valve the latter is sealed with the valve seal (6). To provide valve capacity for work in corrosive media the seat, the spring and the stem are made of corrosion-resistant steel. The working medium can be admitted to the cap according to the pointer on the valve body. Joint to pipeline is welded. * The valve can be mounted on pipeline in any attitude position required.
* - the flanged and inter-flanged joints are available on the customer's request. | | |
VALVE MATERIAL LIST
| No. | Designation | Materials used in various valve versions | | Basic version | - 01 | -02 | | 1 | Valve body | Steel 321H
(X12CrNiTi 18 9) | Steel 1023 (C 22) | cold-resistant steel | | 2 | Cap | | 3 | Stop | | 4 | Valve | Steel 321H (X12CrNiTi 18 9) | | 5 | Spring | Wire - Steel 321H (X12CrNiTi 18 9) | | 6 | Valve seal | PTFE | | 7 | Nut | Steel 1023 (C 22)X13 | | 8 | Stud bolt | | 9 | Joint gaskets | Steel 321H (X12CrNiTi 18 9) | |
PERFORMANCE DATA
| Working medium . . . . . . . | liquid & gaseous | | Working medium temperature | -40°С … +160°С | | Gate leak-proofness class by | | | GOSТ 9544-93 . . . . . . . . . . | B (available for leakage) | | Climatic version by | | | GOSТ 15150-69 . . . . . . | U1 (-40°С до +40°С)
UHL1 (-60°С до +50°С) | | Joint to pipeline | flanged, welding-end | | Total service life, cycles . . . . . | 8000 | | Total life cycle, years . . . . . | 10 min |
OVERAL AND CONNECTING DIMENSIONS OF BALL
Fig. 1
| Designation | PN | DN | D | D1 | D2 | L | Weight, kg | | FB41Х20 015 | 16/25 | 15 | 95 | 17 | 22 | 130 | 1,9 | | FB41 Х20 020 | 20 | 105 | 20 | 26 | 150 | 2,9 | | FB41 Х20 025 | 25 | 115 | 25 | 27 | 160 | 3,1 | | FB41 Х20 032 | 32 | 135 | 33 | 41 | 180 | 5,1 | | FB41 Х20 040 | 40 | 145 | 41 | 49 | 200 | 6,1 | | FB41 Х20 050 | 50 | 160 | 51 | 62 | 230 | 8,1 | | FB41 Х20 065 | 65 | 180 | 67 | 77 | 290 | 10 | | FB41 Х20 080 | 80 | 195 | 82 | 92 | 310 | 21,5 | | Table 1 (Figure 1)
Figure 2
| Designation | PN | DN | D | D1 | d | n | L | | FB41Х10 015 | 16/25 | 15 | 95 | 65 | 14 | 4 | 130 | | FB41Х10 020 | 20 | 105 | 75 | 150 | | FB41Х10 025 | 25 | 115 | 85 | 160 | | FB41Х10 032 | 32 | 135 | 100 | 18 | 180 | | FB41Х10 040 | 40 | 145 | 110 | 200 | | FB41Х10 050 | 50 | 160 | 125 | 230 | | FB41Х10 065 | 65 | 180 | 145 | 290 | | FB41Х10 080 | 80 | 195 | 160 | 8 | 310 | | FB41Х10100 | 100 | 215 | 180 | 350 | | Table 2 (Figure 2)
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