Description
Orifice flange is a component of orifice flowmeter, which is usually used in pairs.
The orifice flowmeter is a component for measuring the pressure difference on both sides of the orifice, and the flow can be calculated according to the formula.
Orifice flowmeter includes orifice plate, orifice flange, impulse pipe, transmitter, etc.
Technical data sheet
| inch | Nominal diameter | 16kg=1. 6MPa | ||||
| outer diameter | Bolt hole distance | Bolt diameter | Bolt hole number | Flange thickness | ||
| 3/8 | DN10 | 90 | 60 | 14 | 4 | 14 |
| 1/2 | DN15 | 95 | 65 | 14 | 4 | 14 |
| 3/4 | DN20 | 105 | 75 | 14 | 4 | 16 |
| 1 | DN25 | 115 | 85 | 14 | 4 | 16 |
| 1¼ | DN32 | 140 | 100 | 18 | 4 | 18 |
| 1½ | DN40 | 150 | 110 | 18 | 4 | 18 |
| 2 | DN50 | 165 | 125 | 18 | 4 | 20 |
| 2½ | DN65 | 185 | 145 | 18 | 4 | 20 |
| 3 | DN80 | 200 | 160 | 18 | 8 | 20 |
| 3½ | DN100 | 220 | 180 | 18 | 8 | 22 |
| 4 | DN125 | 250 | 210 | 18 | 8 | 22 |
| 5 | DN150 | 285 | 240 | 22 | 8 | 24 |
| 6 | DN200 | 340 | 295 | 22 | 8 | 26 |
| 8 | DN250 | 405 | 355 | 26 | 12 | 29 |
| 10 | DN300 | 460 | 410 | 26 | 12 | 32 |
Characteristic
Orifice flange shall ensure that the center of the orifice plate, the center of the flange, the center of the pipe and the gasket are concentric, and the different centrality shall not exceed 0.002d/ β。
The positive and negative pressure direction of the orifice plate and the upstream and downstream pressure tapping flanges shall be consistent with the flow direction of the medium.
The orientation of the pressure tapping hole can be determined according to the installation conditions of different media and transmitters.
Application
Orifice flange is used in petroleum, chemical industry, nuclear power station, food manufacturing, construction, shipbuilding, paper making, medicine and other industries.
