CEPAI GROUP CO.,LTD

Throttling Device

Matched with differential pressure meter or differential pressure transmitter, throttling device will compose a differential pressure type flow meter. It is widely used to measure, control and adjust the flow of liquid, gas and water vapour under single phase condition.

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Product Details

LG Series Throttling device


Overview

Matched with differential pressure meter or differential pressure transmitter, throttling device will compose a differential pressure type flow meter. It is widely used to measure, control and adjust the flow of liquid, gas and water vapour under single phase condition.

 

The throttling device and assembly produced by our company accords to GB/T-2624 AND ISO5167 standard. The throttling element are standard pore plate, standard nozzle, major axis nozzle segmental orifice plate, 1/4 circular orifice plate, wing wind measurement device uniform celerity tube, double venture tube and so on. Selecting pressure methods are angle type selecting pressure and special selecting pressure. Supply form includes assembly and complete set, thus it is widely used in produce and experimental process of industries like oil, chemical industry, metallurgy, electricity, paper making, spinning, food, military project, energy and environment protection etc.

 

Working principle

When the fluid flows through the throttling element in the pipeline, the striation will cause local contraction in the throttling element position, thereby increase the flow velocity and reduce the static pressure, hence, it creates static pressure difference(differential pressure) before and behind the throttling element, the greater the fluid flow velocity is, the larger the differential pressure is. You can measure the quantity of the flow flowing through the throttling device by measuring the differential pressure based on the law of conservation of energy and flow continuous equation.

 

Model explanation

Model of throttling device and assembly is composed of three –group code, the form and code meaning is shown as follows:

Instrument type:

L- flow meter

Supply style

Z- throttling device with before and behind straight pipe

G- throttling element

C-major axis nozzle

Throttling element type

B- pore plate

P -nozzle

W- venturi tube

H- 1/4 circular orifice plare

T- lens mat orifice plate

S- double orifice plate

K- annular orifice plate

J- wing wind measurement device

SW- double venture tube

Z- uniform celerity tube

VZ- cone-shaped tube

X- wedge-shaped tube

Selecting pressure type

K- Clamping ring angle contact selecting pressure

    (ring chamber selecting pressure)

F- flange selecting pressure

J- span selecting pressure

Z- directly drilling selecting pressure

B- eight-slot orifice plate(or nozzle) special selecting pressure

H- welding orifice plate (or nozzle) special selecting pressure

X- current-limiting small orifice plate

Normal pressure grade

A- PN0.25MPa

B- PN0.6MPa

C- PN1.0MPa

D- PN1.6MPa

E- PN2.5MPa

F- PN4.0MPa

G- PN6.4MPa

H- PN10MPa

I- PN16MPa above

 

Nominal diameter(steel tube outer diameter× wall thickness)

10(¢14×2)

15(¢21×2.5)

¢4000

 

Instrument accessories device

Many detection instrument can’t work in special occasions for the performance limit, but, it can enhance the detection instrument and process parameter adaptability without changing the original performance when matched with balancer, isolator and condenser accessory devices,

 

Condenser installed between throttling device and differential pressure transmitter to make the high-temperature steam transformed to condensate water, is used to measure steam or other high-temperature medium

 

Balancer maily works as accessory to measure liquid level.

 

Isolator installed between throttling device and differential pressure transmitter to ensure that the instrument is not eroded when measures viscosity or corrosive medium.


If the throttling device for sale caters to your requirement, welcome to buy with us. As one of the leading such manufacturers and suppliers in China, we will offer you cheap price and excellent services.
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