Wenzhou Jieda Petrochemical Instrument Co., Ltd.

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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

Home > Product > Integrated throttle device

Summary

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
K:	wide margin

Straight sections of code

With upstream and downstream pipe

PF:

With upstream and downstream pipe The next with a connecting flange and process connection flange

PF1:

With upstream and downstream pipe The next with a connecting flange

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.

Scope of application

Flow meter of integrated throttle device is to integrate the throttling device and the differential pressure transmitter. Imitating signal(4～20mA), the differential pressure transmitter and flow display equipment are characterized with good adaptability (suitable for liquid, gas and steam), without the implementation of calibration, high temperature and high pressure resistant, impact deformation, etc. Flow meter of integrated throttle device integrate the transmitter, throttling device of pressure pipe, and valve group together in factory so that it can reduce malfunction and is easy to install and to disassemble.

Notice: Generally liquid, gas and steam all can use the integrated throttle device. But in the following cases, it is recommended to install the throttling device and the differential pressure transmitter separately:

(1). When the throttling device is heavy. (Such as standard nozzle, venturi nozzle, and large diameter hole plate)

(2). When the tested media is high pressure hydrogen gas, high temperature and high pressure water or steam, or when it is not convenient to use integrated device in some particular cases with special materials and installing sealing conditions and there are strict disciplines of installation.

Usage

Flow meter of integrated throttle device can be used in fields as oil, refining, chemical engineering, gas, metallurgy, electric power, pharmacy, etc., and also for measurement of the quality and quantity and flow of liquid, gas, natural gas, and steam.

Technical data

(1) Caliber:DN25～DN1000mm

(2) Precision: ±1%FS

(3) Turndown ratio：Standard 1:10

(4) Working pressure: ≤32Mpa

(5) Medium temperature:-40℃-450℃

(6) Medium viscosity: ≤30CP (equal to that of heavy oil)

(7) The value of β: 0.2-0.8;

(8)Link mode: flange or clamp shape type;

(9) Flange standard manufacturing offered by connects users;

（10）Material: body, orifice board, pressure tube, three valve group: stainless steel

（11）Straight section and connecting flange: carbon steel or stainless steel. Connect users’ requirements.