PP plastic aqurium Check valve /Non return valve/No return valve prevent water back to pump Size 3mm, 4mm,5mm,6mm,8mm,10mm,12mm

Different size available in stock for the same price:

3mm, 4mm,4.5mm,5mm,6mm,8mm,10mm,12mm,

you can buy one size or mix size in one lot 50pcs. Just tell me what model you need when you order.

This check valve can be used to prevent water back to pump or ozone generator;

To prevents damage to equipment, pumps, ozone generator and the flow systems by preventing backflow;

Used for liquids and gases for pressure or vacuum applications.

Good parts for aqurium or aquaculture pump aeration to avoid backflow water.

Feature:

Condition: 100% brand new, hight quality

Body material: PP

Diaphragm material: Silicone

Built-in Spring: 304 S.Steel.

Fitting diameter: 4mm, 6mm,8mm,10mm,12mm 3mm &4.5mm

Opening pressure: <1.0 KPA

Aback pressure: >0.3MPA