The structure of the nozzle flowmeter throttling device is easy to replicate, simple, sturdy, stable and reliable in performance, and has a long service life.
The pressure loss of the nozzle is smaller than that of the orifice plate, and the length of the straight pipe section is also required to be shorter.
The nozzle calculation adopts international standards and processing, and is calibrated according to JJG640-94, without the need for actual flow verification.
High precision, good repeatability, and stable outflow coefficient.
The arc-shaped structure design can measure various liquids, gases, vapors, and various dirty media.
Can withstand high temperature and high pressure, and withstand impact.

●Standard nozzle (ISA1932 nozzle)
Applicable medium; Suitable for high temperature and high pressure steam and water, and can also be used for various gases and liquids;
Nominal caliber: DN50-DN500 (DN>500 can also be designed and produced);
Work pressure: ≤ 42MPa；
Working temperature:- 50℃ — 650℃；
Pressure taking method: corner joint pressure taking;
Installation methods for nozzles: pipe type, clamp type, welding type;
Execution standards: IS05167； GB/T2624；
Accuracy: meets the standard ± 1.0%;
Material: Flanges or clamps: Carbon steel or alloy steel can be selected according to the medium temperature; Stainless steel, etc;
Nozzle: Stainless steel 304; 316, etc.

●Long diameter nozzle
Applicable medium; Specially suitable for high temperature and high pressure steam and water, and can also be used for various gases and liquids;
Nominal caliber: DN50—DN500；
Work pressure: ≤ 42MPa；
Working temperature:- 50℃ - 650℃；
Pressure measurement method: radial distance (D-D/2) pressure measurement;
Installation method of nozzle components: equipped with and welded upstream and downstream pipe sections, and then set pressure holes according to the diameter distance (D-D/2);
Execution standards: IS05167; GB/T2624；
Accuracy: meets the standard ± 2.0%;
Material: Carbon steel and alloy steel can be selected for upstream and downstream pipe sections according to the medium temperature; Stainless steel, etc;
Nozzle: Stainless steel 304; 316, etc.

(1) Pipeline size: outer diameter x wall thickness (mm);
(2) Measurement medium name, medium density [kg/m3];
(3) The maximum flow rate set is the upper limit of the flow meter's range [kg/h or m3/h];
(4) Minimum flow rate of the process: Kg/h or m3/h];
(5) Work pressure: （Mpa）；
(6) Working temperature: (° C);
(7) If equipped with our company's intelligent flow integrator, please provide: pressure change range, or pressure transmitter model and range; Temperature variation range, or temperature transmitter model and range.

1. Try to avoid negative pressure inside the measuring tube as much as possible;
2. Avoid large motors, transformers, etc. nearby to prevent interference with the nozzle field;
3. Choose a location with low vibration, especially for integrated instruments;
4. Places that are easy to implement separate grounding for sensors;
5. Try to avoid direct sunlight as much as possible;
6. Try to avoid high concentrations of corrosive gases in the surrounding environment as much as possible;
7. Try to meet the requirements of the calculation sheet for the front and rear straight pipe sections.