​Why Our Flow Meters Are the Right Fit for Gastric Lavage Testing

When it comes to gastric lavage – the emergency procedure used to empty a patient's stomach in cases of poisoning or overdose – there

 is no room for error. The pumps used in this procedure must perform exactly as intended. And that is why hospitals and testing labs rely

 on specialized gastric lavage testers to verify flow rate, pressure, and temperature on a regular basis.

At the heart of every one of those testers sits a single flow meter. And for more and more manufacturers in China, that flow meter comes from us.

The Application Is Simple. The Conditions Are Not.

Gastric lavage testers measure water flow in a very specific range: 30 to 180 millilitres per minute. The operating pressure stays below 0.3 

kilograms per square centimetre – barely above zero. At such low pressure, most flow meters lose accuracy or stop working reliably. It is one 

of the most difficult conditions you can ask a flow meter to handle.

On top of that, the medical testing industry demands repeatability between 1% and 3%. In simple terms, the reading you get today must 

match the reading you get tomorrow. Consistency is not optional – it is mandatory.

And because testing equipment is compact, the flow meter itself has to be small. No bulky designs allowed.

Our CX-P2-F and CX-P5-F: Built for This Exact Job

Our elliptical gear flow meters – the CX-P2-F and CX-P5-F – were designed with applications like this in mind.

The elliptical gear mechanism operates on a positive displacement principle, which gives it excellent linearity and repeatability even at the

 lowest flow rates and pressures. It does not drift. It does not lose accuracy when the pressure drops. It simply delivers stable, dependable 

readings, time after time.

And despite the robust internal mechanism, the P-series design keeps the overall size remarkably compact – perfectly suited for 

space-constrained tester enclosures.

Proven Performance, Trusted by Leaders

Our flow meters are already the number one choice in China's domestic market for medical testing applications. In 2025 alone, we shipped

 around 280 units to this sector. In the first half of 2026, we have already delivered 50 units.

Manufacturers choose us because our meters meet their exact requirements:

Flow range: 30–180 mL/min

Pressure: under 0.3 kgf/cm²

Repeatability: 1%–3%

Compact footprint

Reliable performance in near-zero pressure conditions

Simply Put

If you are building or using gastric lavage testers, you need a flow meter that handles low pressure, delivers consistent repeatability, 

and fits into tight spaces. Our CX-P2-F and CX-P5-F check every box. They are already proven in the field, trusted by industry leaders, 

and ready for the next generation of medical testing equipment.

That is what we do. And we do it well.

Want to learn more about our CX-P2-F or CX-P5-F for your gastric lavage or dialysis testing application? Contact our team – we are happy

 to help you find the right fit.