Dismantling joints
Excellence Quality · Professional Choice
High-performance duckbill check valve, manufactured with advanced technology
✓ Excellent sealing performance ✓ Corrosion-resistant materials ✓ Long-lasting durability ✓ Easy installation
Industry Leading
Quality Assurance
Dismantling joints
Engineered for reliability, built for performance. Our comprehensive range of industrial valves meets the highest quality standards.
Slip on duckbill check valve
Flanged duckbill check valve
Insertable Duckbill Check Valve
Inline Flanged Duckbill Check Valve
Flat Bottom Duckbill Check Valve
Technical Specifications
| Available Sizes | 20mm to 3000mm (DN20 to DN3000) |
| Rubber Material | EPDM, NBR, CR, NR, VITON, etc. |
| Flange Material | SS316, SS304, Carbon Steel, etc. |
| Flange Standards | PN16, PN10, PN16, Table D, Table E, ANSI 150#, ANSI300#, etc. |
Material Selection Guide
Choosing the right material is crucial for optimal product performance. Here's a comprehensive comparison of material properties.
Material Properties Comparison
| Material | Properties | Application Environment |
|---|---|---|
|
EPDM
|
|
Outdoor, electrical, automotive |
|
NBR
|
|
Oil & gas, industrial sealing |
|
CR
|
|
Marine, construction, general |
|
NR
|
|
Tires, mechanical, general |
|
VITON
|
|
Aerospace, chemical, high-temp |
How to choose the right Dismantling joint？
Select the product according to the location of the product in the pipeline.
Connection Type Comparison
| Type | Application Scenarios | Structure/Connection Method | Advantages | Disadvantages |
|---|---|---|---|---|
| Clamp Type | Plastic pipe terminals (PVC/HDPE) Hose connections Steel pipe terminal + sleeve Space-limited applications Low-pressure systems | Flanged valve body + metal/plastic clamp secured to smooth pipe end | ✔ Rapid installation ✔ Low cost ✔ Lightweight ✔ Hose-compatible | ✘ Limited pressure rating (≤0.6 MPa) ✘ Clamp quality critical ✘ Requires straight pipe end |
| Flange Type | Steel/ductile iron pipelines Pressure lines (pump discharge) High-pressure applications Large diameters (DN≥200) Mid-pipe check valve | Prefabricated standard flange (GB/DIN/ANSI) Bolted connection to pipeline flange | ✔ High pressure capacity (1.6MPa) ✔ Reliable sealing ✔ Universal application ✔ Robust | ✘ Complex installation (bolt alignment) ✘ Higher cost (paired flanges) ✘ Heavy weight |
| Internal Clamp | Embedded concrete structures (manholes/tank walls/floors) Submerged outlets Flush wall requirements | Internal installation Valve inserted into opening Secured with internal clamps/bolts | ✔ External flush surface ✔ Ideal for submerged conditions ✔ Space-efficient | ✘ Internal access required ✘ Seal dependent on wall treatment ✘ Difficult maintenance |
| Internal Flange | Embedded concrete structures (same as left) Higher pressure/larger valve applications | Flanged valve body Through-wall bolts Secured from inside wall surface | ✔ Max. strength (2.5MPa) ✔ Superior sealing (gasket+flange) ✔ External flush surface | ✘ Most complex installation ✘ Mandatory internal access ✘ Precise opening required |
| Flat Bottom Type | Sump/pump pit bottoms Grade-level discharge points No vertical pipe/wall applications | Base plate flange Anchored with expansion bolts Directly to horizontal surface (concrete/steel) | ✔ No pipe/wall required ✔ Flexible positioning | ✘ Prone to sediment buildup ✘ Requires level foundation ✘ Bolts need corrosion protection |
Industrial Applications
Duckbill check valves are widely applied across various industrial sectors, providing reliable fluid control solutions for different industries.
Water Treatment
Chemical Industry
Food Processing
Pharmaceutical
Marine Industry
Application Restrictions
Please select appropriate materials based on specific operating environments. Avoid using products beyond the material performance range. For detailed restriction conditions, please consult technical support.
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Technical Support & Consultation
For more technical information or customized solutions, please contact our technical team.
Phone: +86 18703845698
Email: Info@focalvalve.com