A fully mechanical rotary piston meter that reaches R400, an accuracy class usually reserved for ultrasonic and electronic meters. No battery, no electronics, nothing to replace. It records the small flows other meters miss: dripping taps, running toilets, slow leaks.
Built for utilities and building projects that lose revenue to low-flow water.
The rotary piston measures water by volume, chamber by chamber, so accuracy holds even at very low flow. At Q3 = 2.5 m³/h, R400 means flows down to 6.25 L/h are measured within ±5%. Every meter is tested at Q1, Q2 and Q3 before shipping, and its actual errors are written on a label inside the lid.
| Model | LXH-R400 |
| Type | Volumetric, rotary piston |
| Size | DN15 (15 mm) |
| Permanent flow Q3 | 2.5 m³/h |
| Ratio Q3/Q1 | R400 |
| Minimum flow Q1 | 6.25 L/h |
| Accuracy class | Class 2 |
| Max. pressure (MAP) | 16 bar (1.6 MPa) |
| Body | Engineering plastic |
| Factory test | Each meter at Q1, Q2, Q3 |
| OEM | Custom dial, logo & packaging |
Lowest flow each meter measures within ±5%, at the same Q3 = 2.5 m³/h. The lower the number, the more water gets billed.
| Meter | Ratio | Lowest accurate flow (Q1) |
| Standard multi-jet | R100 | 25 L/h |
| High-class single-jet | R160 | 15.6 L/h |
| LXH-R400 volumetric | R400 | 6.25 L/h |
We design and assemble in our own factory, so you get factory pricing and direct engineering support.
Every batch is checked for accuracy and airtightness before it leaves the line.
Custom dial printing, logo and packaging for distributors and utilities.
Talk directly to the people who design the meters, not a call center.
Based in Ningbo, China's water meter hub, with a mature local supply chain for parts and components.
Export packing and shipping documents handled for international buyers.
Tell us the model, size and quantity you need. We reply within 24 hours.