Cryogenic welding-end ball valves FB39

Cryogenic welding-end ball valves

PURPOSE AND SPHERE OF APPLICATION

Cryogenic welding-end ball valves are 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 GOSТ 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 U1 (-40°С ... +40°С)
UHL1 (-60°С ... +50°С)
Handle turning force, N 150Н max
Total service life, cycles 8000
Total life cycle, years 10 min

VALVE DESIGN

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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.DesignationMaterial
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

OVERAL AND CONNECTING DIMENSIONS OF BALL VALVES

Ser. Krio

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