Rubber duckbill check valves are commonly known as rubber drain check valves, drain rubber check valves, rubber check valves, rubber non-return valves, etc. Rubber duckbill check valves work on a simple principle: when liquid passes through the valve, it opens. As the flow or pressure increases, the opening of the duckbill valve increases accordingly. When the flow of water stops, the backwater pressure or atmospheric pressure compresses the duckbill valve, thus preventing the liquid or odor from flowing back. The pressure required to open the duckbill valve is very low, and the valve usually opens when the difference between the forward and reverse water levels reaches 250 Pa.
Rubber Duchbill check valves Specification
| Technics | Flange |
| Shape | Equal |
| Standard of Flange | DIN/JIS/ANSI/BS/ISO |
| Product Name | Rubber Duchbill check valves |
| Applicable Media | Water |
| Working Pressure | Medium Pressure |
| Temperature of Media | Normal Temperature |
| Transport Package | Wooden Case |
| Specification | DN25--DN600 |
| Trademark | OEM |
Rubber Duckbill check valves
FAQ
1. What are your delivery terms?
A: We accept EXW, FOB, CIF, DAP, and other delivery methods. You can choose the most convenient one.
2. What are the packing and transportation methods for the goods?
A: Usually, they are packed in plywood boxes and shipped by sea. Train and air transportation are also available.
3. How do you handle after-sale problems?
A: Warranty: 12 months from the date of shipment. We will be responsible for all quality issues. We can offer a longer warranty if there is a detailed request and discussion.
4. What is the average delivery time?
A: For samples, the delivery time is about 2-5 days. For mass production, the lead time is about 15-60 days after receipt of the deposit. We can provide a production schedule and related photos every two weeks. The delivery time is effective when (1) we receive your deposit and (2) we obtain your final approval of the production drawings. If our delivery time does not match your deadline, please send us your request with the order. In any case, we will try to meet your production schedule.
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