Orifice plate flowmeters throttling devices

Short Description:

Nominal Diameter: DN10 – DN1200

Measuring Accuracy: ±0.5%, ±1%, ±1.5%

Flow Range: ≥ 1:15

Nominal Pressure: 0.6, 1.0, 1.6, 2.5, 4.0, 6.4, 10 (MPa)

Measured Medium: Saturated steam, superheated steam, water, air, natural gas, other mixed media

Medium Temperature: -10 ℃ ~ +450 ℃

Product Detail

Product Tags

Products Instructions

In Petroleum, chemical industry, metallurgy, electric power, textile, military industries manufacturing process, now widely use the throttling device for fluid flow measurement and control. Like standard orifice plate flow meters. Our company manufacture a variety of throttling device that conform to international standard ISO5167:2003 and national standard GB/T2624-2006. Also manufacture widely used special throttling device such as 1/4 circular nozzle, double orifice plate and segmental orifice plate, conical entrance orifice plate, venturi tube etc.

Our company sincerely according user requirements or user’s drawings to manufacture throttling device and accessories.

Product Features

  • Throttle device structure is easy to copy, stable and reliable performance, long use period;
  • Orifice plate calculation using international standards to produce, it can put into use without real-time calibration;
  • Wide range of applications, can measure all the single-phase flow, also applied to some mixed-phase flow;
  • Wide measuring range, greater than 10: 1;
  • Simple installation, no need of pressure tube, it can be directly connected to the differential pressure transmitter and pressure transmitter;
  • With a variety of communication interfaces;
  • Intelligent orifice plate flow meter also has the fuction of self-diagnosis and set their own range.


Product Parameters

Nominal Diameter: DN10 – DN1200
Measuring Accuracy: ±0.5%, ±1%, ±1.5%
Flow Range: ≥ 1:15
Nominal Pressure: 0.6, 1.0, 1.6, 2.5, 4.0, 6.4, 10 (MPa)
Measured Medium: Saturated steam, superheated steam, water, air, natural gas, other mixed media
Medium Temperature: -10 ℃ ~ +450 ℃
Power Supply: Intelligent flow totalizer 220VAC, flow transmitter 24VDC (by the totalizer power supply)
Output Signal: 4-20mA DC or RS485 communication
Explosion-proof: Intrinsically safe ibiICT5


Products Structure:

1. Standard orifice plate, pressure taps is carrier ring, see figure a

Orifice plate flowmeters throttling devices04


Figure a    Structure of standard orifice plate with carrier ring


2. Standard orifice plate, pressure taps is flange taps, see Figure b

Tapping position should be at the flange of the cylindrical surface (straight hole) or the side of the face (slant hole), The centerline of pressure taps distance to downstream side or upstream is all 25.4mm. It has convenient installation, not easy jam, sewage to facilitate,

Orifice plate flowmeters throttling devices05


Figure b   Structure of standard orifice plate with flange taps


3. Hidden flange taps orifice plate, see figure c

Using standard concave and convex surface flange external circular hole drilling with compressive, convenient installation guide, orifice plate accurate positioning and advantages of concentricity.

Orifice plate flowmeters throttling devices06

Figure c Structure of hidden orifice plate with flange taps


4. Standard nozzle, pressure taps is carrier ring, see figure d

Orifice plate flowmeters throttling devices07


Figure d Structure of standard nozzle with carrier ring


5. Structure of standard venturi tube (classic venturi tube), see figure e

Orifice plate flowmeters throttling devices08


Figure e Structure of standard venturi (classic venturi tube)


Products Applications

As the one of the most commonly used throttle device, the orifice plate flow meter also can be widely used in petroleum, chemical, natural gas, metallurgical, power, pharmaceutical and other industries, a variety of liquids, gases, natural gas and steam volume flow or mass flow of continuous measurement.


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