Before a water flosser pump core (semi‑finished unit) moves to final assembly, it must pass a strict water pressure test that checks three critical parameters: start‑up time, output pressure, operating current, and seal integrity.

Our 3‑Step Pump Core Test Procedure

1. Start‑up & Pressure Test
After power is applied, the pump core must begin delivering water within 3 seconds. We measure the water pressure using a precision gauge.
✅ Acceptable range: 13g – 22g (grams of force). Units below or above this range are rejected.

2. Operating Current Test
During the pressure test, we also monitor the current draw of the pump core under load.
✅ Acceptable limit: ≤ 3A. Higher current indicates abnormal resistance or motor overload.

3. Leakage Test
Throughout the test cycle, we visually inspect the pump core for any signs of water leakage – from seals, joints, or the housing.
❌ Any leaking unit is immediately removed and placed in a designated reject area for analysis.

Why This Testing Matters for Your Brand

A water flosser’s pump core is its heart. If the pump fails to start quickly, produces incorrect pressure, draws excessive current, or leaks internally, the finished product will perform poorly – leading to customer complaints and returns. By testing every semi‑finished pump core before assembly, we ensure:

• Reliable water flosser performance from the first use

• Consistent pressure output for effective plaque removal

• No internal leakage that could damage electronics or reduce product lifespan

• Lower defect rates for our B2B partners

Trusted by Global Oral Care Brands

As a source factory for water flossers and oral irrigators, we apply the same rigorous pump core testing to every order – whether OEM or private label. We offer full traceability and can provide test reports upon request.

Contact us for a product catalog, sample request, or to learn more about our quality control process.