An orifice plate flowmeter is a simple throttling device that limits, stabilizes or distributes flow by creating a fixed pressure drop.

1. Extremely simple structure and low cost.
2. No moving parts, high reliability and maintenance-free.
3. Clear and effective functions: very reliable in limiting flow and stabilizing pressure.
4. Adaptable to harsh working conditions: suitable for high temperature, high pressure and corrosive media through the selection of appropriate materials and multi-stage design.

1. Safety protection: Recirculation lines for pumps, anti-surge bypasses for compressors, to limit minimum flow.
2. Pressure distribution: Before manifold or parallel equipment to ensure balanced pressure in each branch.
3. Pressure reduction and buffering: Installed before high-pressure control valves to reduce pressure before the valve and extend valve life.
4. Sampling system: Provide stable small flow samples for online analyzers.
5. Relief device: As a small safety relief valve or auxiliary relief for flare systems.
6. Test bench: Provide a fixed flow resistance in fluid test systems.

The flow-limiting orifice plate is a "functional" throttling element rather than an "instrumental" measuring element.