 Cryogenic welding-end ball valves
FB39 PURPOSE AND SPHERE OF APPLICATION
Intended to be fitted as stop/shutoff valves on pipelines of liquid and gaseous media (methane) at cryogenic temperatures. Distinctive features of these valves are possibility to use at low temperatures till -196 °С and casting design of valves.
PERFORMANCE DATA | Working medium . . . . . . . | Liquid & gaseous media
where the valve material
is corrosion-resistant | | Nominal pressure, PN | 100 | | Working medium temperature | -196°С ... +180°С | Gate leak-proofness class
by GОSТ 9544-93 | А (without leakage) | | Operation factors of electrostatic protection | At voltage of 12V electrical
resistance is10 Om max | Climatic version
by GOSТ 15150-60 | UHL2 (-60°С...+50°С) | | Handle turning force, N | 150 max | | Total service life, cycles | 8000 | | Total life cycle, years | 10 min | | |
VALVE DESIGN
The ball valve consists of the body (1) and the caps (2) bolted together by bolts (12). The ball seat (7) presses the ball (3). The joining of the valve body and the caps (2) is sealed with the joint gaskets (8). The stem (6) has an extension center. The valve is supplied with a pipe (4) bolted to the body (1), the stem (6) is inside this pipe. There is a sealing set in the upper part of the pipe consisting of thrust washers (10) and a bonnet (5) bolted together by nuts (16) stud bolts (15). Для уплотнения соединения фланцев 14 и 15 между ними расположена прокладка 18. The movement assembly has a handle (14) and a stop (13) fixed in the end part of the stem (6). Such design provides for using the valve if in the pipeline there is a pipe covering witch increases significantly the diameter of the pipeline because of the handle placing outside this pipe covering.
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MATERIAL LIST
| No. | Designation | Material | | 1 | Valve body | Steel 321H
(X12CrNiTi 18 9) | | 2 | Cap | | 3 | Valve ball | | 4 | Pipe | | 5 | Bonnet | | 6 | Stem | Steel 431 | | 7 | Ball seat | Modified PTFE | | 8 | Joint gaskets | PTFE | | 9 | Thrust washer | Steel 321H
(X12CrNiTi 18 9) | | 10 | Ring | | 11 | Bolt | Steel 302
(X12CrNiTi 18 9) | | 12 | | 13 | Stop | Steel 440С | | 14 | Handle | Steel 302
(X12CrNiTi 18 9) | | 15 | Stud bolt | | 16 | Nut | |
Ser. Krio
OVERAL AND CONNECTING DIMENSIONS OF BALL VALVES
| Designation | DN | d | D | D1 | L | L1 | Н | | FB39 420 015 700К | 15 | 16 | 15 | 21 | 75 | 135 | 241 | | FB39 420 020 700К | 20 | 20 | 22 | 27 | 90 | 135 | 244 | | FB39 420 025 700К | 25 | 24 | 28 | 34 | 100 | 160 | 261 | | FB39 420 032 700К | 32 | 32 | 37 | 42 | 110 | 160 | 265 | | FB39 420 040 700К | 40 | 38 | 43 | 48 | 125 | 230 | 300 | | FB39 420 050 700К | 50 | 50 | 54 | 61 | 150 | 230 | 310 | | | |
