Customized 2" Rubber Duckbill Check Valve General Rubber Expansion Joints
Customized 2" Rubber Duckbill Check Valves and General Rubber Expansion Joints are engineered to provide reliable flow control and pipeline protection across a wide range of industrial, municipal, and wastewater applications. The customized 2-inch duckbill check valve uses a flexible rubber "duckbill" design that opens easily under forward pressure and closes tightly to prevent backflow, offering a corrosion-resistant, maintenance-free solution ideal for confined or small-diameter pipelines. Our general rubber expansion joints are manufactured to absorb vibration, reduce noise, and compensate for thermal expansion, misalignment, and pipe movement, ensuring stable and long-lasting operation of pumps and piping systems. With multiple elastomer options, flange standards, and pressure ratings available, we provide fully customized, durable, and cost-effective products tailored to the specific needs of engineering projects worldwide.
Features & Benefits of Duckbill Check Valve
- 100% full rubber structure, which can meet various anti-corrosion requirements (different rubber materials can be selected according to the actual demand)
- No blockage and good sealing
- Long service life, no fault and maintenance free
- No moving parts and mechanical parts, no electric signal and manual operation, no noise
- When the opening pressure is small, the valve with water head more than 0.01M can be opened
- Can minimize the head loss
- Can be changed in various installation forms according to customer needs
- Convenient installation, low cost and low operation cost
Technical Data of Duckbill Check Valve
| Pipe Size ID |
Length |
Height |
Flange Outside Diameter |
| DN(mm) | NPS |
L(mm) |
H |
A |
| 50 | 2 |
150 |
100 |
150 |
| 80 | 3 |
220 |
140 |
200 |
| 100 | 4 |
250 |
200 |
225 |
| 150 | 6 |
340 |
265 |
275 |
| 200 | 8 |
420 |
325 |
338 |
| 250 | 10 |
520 |
425 |
400 |
| 300 | 12 |
620 |
525 |
485 |
| 350 | 14 |
700 |
625 |
525 |
| 400 | 16 |
800 |
725 |
588 |
| 450 | 18 |
900 |
825 |
625 |
| 500 | 20 |
980 |
925 |
688 |
| 600 | 24 |
1120 |
1025 |
800 |
| 700 | 28 |
1180 |
1125 |
969 |
| 800 | 32 |
1350 |
1400 |
1080 |
| 900 | 36 |
1500 |
1525 |
1150 |
| 1000 | 40 |
1600 |
1725 |
1325 |
| 1200 | 48 |
1840 |
1950 |
1485 |
Note: For duckbill check valve, if there are other standard requirements or special flange needs to be customized, please provide written drawings, standards and information, we can customize duckbill check valve for you.
Duckbill Check Valve Advantages
- Factory price
- 17 years of manufacturing experience, 5 years of export experience
- Strict quality inspection, and the quality is far beyond the industry standard
- Various specifications of duckbill check valve mould support customization and OEM
- Provide free samples of duckbill check valve
- Large inventory
Duckbill Check Valve Application
Because the main feature of the duckbill check valve is that the flange and the duckbill check valve are integrated, the installation is very convenient. The duckbill check valve adopts all rubber design, which will not cause blockage and jamming, reduce the maintenance cost and make the solid particles pass through smoothly. So the main application scope of duckbill check valve is: for waterproof system, drainage system, pump outlet, lifting pump station, submerged aeration system.
Our Services
- 24-hour online
- Free samples provided
- Support customization
- Provide drawings
- Multiple payment styles to choose from
- Factory inspection (material, specifications, quantity, pressure, packaging)
- Long warranty period
- Suitable packaging for transportation
FAQ
Q1: What's the rubber material of Rubber Expansion Joints?
A1: EPDM, CR, NBR, etc. It depends on the working environment and media.
Q2: Is the flange galvanized of Rubber Expansion Joints?
A2: Yes, we have electronic galvanized and hot dip galvanized flanges. We also have painted flanges.
Q3: Can the Rubber Expansion Joints be marked with customized logo?
A3: Yes, the duckbill check valve can be marked with your logo. We could provide OEM&ODM service for duckbill check valve.
Q4: Can we get a sample of Rubber Expansion Joints?
A4: Yes, we could provide samples for you to test the quality of our duckbill check valve.
