# Venturi Tubes

> A classical convergent-throat-diffuser primary element for stable measurement where energy recovery matters.

## Specifications

- **Beta ratio**: 0.30–0.75
- **Accuracy**: Cd uncertainty 0.7%–1.5% (type dependent, per ISO 5167-4)
- **Turndown ratio**: 10:1 typical; up to 20:1 with modern DP transmitters
- **Pipe size range**: DN50–DN1200
- **Standard**: N/A

## Applications

- Cooling water
- Combustion air
- Large process lines
- Power-generation utilities

## Features

- Strong pressure recovery (80–90%)
- Robust welded or machined construction
- Suitable for large diameters
- Fixed Cd constant (Re ≥ 2×10⁵)

## Contact

- Website: https://www.shizhongflow.com
- Email: info@jnszyb.com
- Phone: +86-188-0531-6689
- Address: 7036 Jingshi West Road, Jinan, Shandong, China 250022