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Zhejiang province Wenzhou City Economic Development Zone Ouhai three West Road No. 2
TEL: 0577-86362377
0577-86786325
FAX: 0577-86720072
When the fluid flows through the throttling device, the flowing speed will form local contraction at the throttling parts, which causes the speed high and the static pressure low； Then there would appear static pressure difference (or differential pressure). The higher the speed is, the heavier the pressure. Therefore, to measure the differential pressure can know the flow through the throttling device. This is based on the theory of the law of the conservation of energy and flow continuity equation.
Throttling element code
|
Code |
Name |
Code |
Name |
Code |
Name |
|
O |
Standard orifice plate |
E |
Eccentric orifice plate |
P |
Standard nozzle |
|
S |
Double orifice plate |
V |
Conical entrance orifice plate |
C |
Long diameter nozzle |
|
Q |
Segmental orifice plate |
T |
Lens plate |
L |
Venturi nozzle |
|
X |
Orifice plate |
R |
1/4 hole plate |
W |
Venturi pipe |
Pressure form code
|
H: |
Annular chamber |
|
Z: |
Flange hole |
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K: |
wide margin |
Straight sections of code
|
P: |
With upstream and downstream pipe
|
|
PF: |
With upstream and downstream pipe The next with a connecting flange and process connection flange |
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PF1: |
With upstream and downstream pipe The next with a connecting flange
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Model example
Example 1
FCOHPF-63X100 means nominal pressure is 6.3MPa, nominal diameter is 100mm, with upstream and downstream pipe and the connecting flange, and ring chamber press the standard orifice plate throttling device
Example 2
FFOP-300#×50 means nominal pressure is 300lb, nominal diameter is 50mm, with upstream and downstream pipe and flange press the standard orifice plate throttling device.
Angle pressuring throttling device structure
PN0.6~2.5MPa Throttling device of ring chamber pressure standard orifice plate (Standard nozzle)
Nominal pipe size: DN50-400mm
Nominal pressure: PN0.6 1.0 1.6 2.5MPa
Material: If there are no particular requirements, the orifice plate uses 1Cr18Ni9Ti, flange, annular chamber and pipe section made with steel No.20, or with other materials according to the requirements of the clients.
Structure form is as the picture:
PN1.0MPa throttling device of flange hole angle pressure standard orifice plate
Nominal pipe size:DN700～1000mm;
Nominal pressure: PN1.0MPa;
Material: If there are no particular requirements, the orifice plate uses 1Cr18Ni9Ti, flange Q235-A, or with other materials according to the requirements of the clients.
Structure form is as the picture:
PN0.6~2.5MPa broadside pressure standard orifice plate throttling device (segmental orifice plate)
Nominal pipe size:DN50～4000mm;
Nominal pressure: PN 0.6 1.0 1.6 2.5MPa;
Material: If there are no particular requirements, the orifice plate uses 1Cr18Ni9Ti, flange and pipe section made with steel No.20, or with other materials according to the requirements of the clients.
Structure form is as the picture:
PN0.6~2.5MPa ring chamber pressure of double orifice throttling device
Nominal pipe size: DN100～400mm;
Nominal pressure: PN0.6 1.0 1.6 2.5MPa
Material: If there are no particular requirements, the orifice plate uses 1Cr18Ni9Ti, flange, ring chamber and pipe section made with steel No.20, or with other materials according to the requirements of the clients.
Structure form is as the picture:
