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     Chock valve
     Check valve
 
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chock valve
Choke Valve:
  The choke valve, a main component of Christmastree, is design to control production rate of the oil well,with working pressure up to 10000psi. Choke valvescan be classified as follows: adjustable choke valves and positive choke valves. By rotating handwheel todrive the stem, the adjustable choke valve is designedto adjust the effective area available for the flow to ac-complish control of production rate. The positive chokevalve is design to accomplish control of production rateby changing flow beans.
  Features:
  The coupling nut used for connecting the bonnetand body allows fast make-up and break-out
  Stem tip and bean adaptor are fabricated from spe-cial carbide alloys for corrosion and abrasionresistance.
  Indicator lens with scale marks allows the operatorto know stem's position and actual orifice area
  Turn handwheel counter-clockwise and the valvewill open; turn handwheel clockwise and the valvewill close.
  Parts List:

Item
Component
Qty
Material
Remark
A
Bushing
1
FKM
B
Body
1
30CrMo
C
Bonnet Stud
8
30CrMo
D
O-Ring
2
NBR
E
Seat Bushing
1
30CrMo
F
Seat
1
YG8
G
Stem Adaptor
1
30CrMo
H
Valve Core
1
YG8
I
O-Ring
2
NBR
J
Packing Box
1
30CrMo
K
O-Ring
2
NBR
L
Bonnet
1
30CrMo
M
Packing Gland
1
30CrMo
N
Bonnet Nut
8
30CrMo
O
Stem
1
2Cr13
P
Screw Housing
1
40Cr
Q
Saddle Key
1
45
R
Stem Nut
1
ZcuA19-4
S
Handwheel
1
QT400-17
T
Indecator Ring
1
2Cr13
U
Stem Protector
1
Q235
V
Bearing Gland
1
40 Cr
W
Bearing
2
Standard
X
Flat Key
1
Standard
Y
Grease Cup
1
Standard
Z
Packing Ring
2
2Cr13
Z1
Packing
5
FKM
 
 
 
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