Clamp Type Rubber Duckbill Check Valve
1. Direct slip-on installation over un-flanged pipes — no flanges needed.
2. 100% full-elastomer construction with no mechanical parts to freeze, corrode, or wear out.
3. Heavy-duty Stainless Steel 304/316 clamp fasteners for reliable, vibration-resistant connections.
4. Unique flat bill shape for clean discharge and non-slam backflow protection.
5. Excellent tolerance for solids, slurry, and debris —seals tightly around obstructions without jamming.
6. Customizable cuff depths to prevent axial blow-off under sudden surge conditions.
7. Vulcanized multi-layer fabric reinforcement for enhanced structural durability.
8. Wide size range DN100–DN3000 (4"–120") with custom options available on request.
Contact Us for Pricing
Interested in this product? Contact us now for detailed pricing and product information.
Product Details
Clamp Type Rubber Duckbill Check Valve
Key Features at a Glance
1. Direct Slip-On Installation
Mounts directly onto the outer diameter of un-flanged concrete, PVC, or steel pipes without requiring mating flanges, dramatically reducing structural assembly labor and hardware overhead.
2. 100% Full-Elastomer Structure
Constructed entirely from premium rubber compounds (EPDM, NBR, Neoprene, or Natural Rubber) with no internal mechanical components to freeze, corrode, or wear out over decades of service.
3. Heavy-Duty Stainless Steel Clamps
Secured tightly with adjustable heavy-duty Stainless Steel 304 or 316 bands that provide reliable, vibration-resistant connections in harsh environments.
4. Unique Flat Bill Design
The proprietary flat bill shape ensures clean, unobstructed forward discharge while offering absolute non-slam backflow protection even under rapidly varying line pressure conditions.
5. Excellent Solids & Slurry Tolerance
The flexible rubber matrix inherently permits the passage of larger stones, organic debris, and heavy silt, sealing tightly around obstructions under backpressure without jamming or clogging.
6. Customizable Cuff Depths
The prolonged muff coupling section ensures sufficient gripping surface area, avoiding premature axial blow-off under sudden surge conditions and accommodating custom pipe insertion requirements.
7. Vulcanized Multi-Layer Fabric Reinforcement
Engineered with vulcanized multi-layer synthetic fabric reinforcement for enhanced structural integrity and dimensional stability across the entire size range from DN100 to DN3000.
8. Wide Size Range DN100–DN3000
Comprehensive sizing from 4-inch to 120-inch bore, with 21 standard size increments. Custom cuff depths, overall lengths, and clamp configurations available on request.
Key Technical Advantages
- Cost-Efficient Slip-On Installation: Mounts directly onto the outer diameter of un-flanged concrete, PVC, or steel pipes, drastically reducing structural assembly labor and hardware overhead compared to flanged alternatives.
- Excellent Solids & Slurry Tolerance: The flexible rubber matrix inherently permits the passage of larger stones, organic debris, and heavy silt, sealing tightly around obstructions under backpressure without clogging or jamming.
- Customizable Cuff Depths: The prolonged muff coupling section ensures sufficient gripping surface area, avoiding premature axial blow-off under sudden surge conditions and accommodating custom pipe insertion requirements.
Technical Parameters & Materials
| Technical Property | Specification |
|---|---|
| Product Name | Clamp Type Rubber Duckbill Check Valve |
| Series | DEVEL DC-Series (Muff Coupling / Slip-On Sleeve Design) |
| Bore Size Range | DN100mm – DN3000mm (4″ to 120″) |
| Fastener Assemblies | Heavy-duty adjustable band clamps (Stainless Steel 304 / 316) |
| Elastomer Options | EPDM, Natural Rubber, Neoprene, Nitrile (Vulcanized multi-layer fabric reinforced) |
| Body Structure | 100% Full-Elastomer, no internal mechanical components |
| Fitting Type | Direct slip-on jacket fitting |
| Action Type | Passive, pressure-activated flat bill design |
| Backflow Protection | Absolute non-slam, self-sealing |
Dimensional Specifications
| inch | DN (mm) | Std. Length (mm) | Height (mm) | Cuff Depth (mm) |
|---|---|---|---|---|
| 4 | 100 | 270 | 200 | 40 |
| 5 | 125 | 320 | 255 | 50 |
| 6 | 150 | 360 | 265 | 50 |
| 8 | 200 | 450 | 325 | 50 |
| 10 | 250 | 560 | 425 | 75 |
| 12 | 300 | 650 | 525 | 115 |
| 14 | 350 | 750 | 625 | 115 |
| 16 | 400 | 850 | 725 | 135 |
| 18 | 450 | 950 | 825 | 150 |
| 20 | 500 | 1060 | 925 | 200 |
| 24 | 600 | 1200 | 1080 | 200 |
| 28 | 700 | 1260 | 1250 | 200 |
| 32 | 800 | 1450 | 1400 | 250 |
| 36 | 900 | 1620 | 1550 | 250 |
| 40 | 1000 | 1720 | 1725 | 250 |
| 48 | 1200 | 2010 | 1950 | 300 |
| 56 | 1400 | 2280 | 2320 | 320 |
| 64 | 1600 | 2600 | 2650 | 350 |
| 72 | 1800 | 2920 | 2960 | 400 |
| 80 | 2000 | 3150 | 3300 | 450 |
| 88 | 2200 | 3450 | 3580 | 500 |
| 96 | 2400 | 3760 | 3925 | 550 |
| 104 | 2600 | 3900 | 4250 | 600 |
| 112 | 2800 | 4200 | 4580 | 650 |
| 120 | 3000 | 4500 | 4990 | 700 |
Engineering Note: Customized structural configurations, bespoke total lengths, and modified cuff matching metrics can be engineered strictly according to your detailed pipeline installation specifications.
Interchangeability & Installation Directives
Retrofitting Capabilities: Designed for direct slip-on mounting over un-flanged plain-end pipes (concrete, PVC, steel), eliminating the need for structural pipeline modifications or welding. One clamp-type valve replaces both a flanged check valve and its companion flanges, simplifying retrofit projects.
Clamp Tightening Notice: Ensure the mating pipe surface is clean and free of scaling residues. Apply clamp tightening torque sequentially in a uniform cross-pattern sequence to guarantee a 360-degree positive seal compression across the full cuff contact circumference.
Typical Applications
Stormwater Management
Municipal storm overflow outfalls, rainwater drainage systems, and urban flood control pumping stations.
Sewage & Wastewater
Sewage discharge outlets, wastewater treatment facilities, combined sewer overflow (CSO) systems.
Flood Control Systems
Emergency discharge lines, levee drainage gates, and tidal barrier backflow prevention infrastructure.
Industrial Effluent Lines
Process water discharge, cooling water outfalls, and industrial wastewater drainage pipelines.
Marine & Tidal Environments
Tidal wetlands, coastal discharge points, marine outfall diffusers, and saltwater intrusion barriers.
Municipal Infrastructure
Municipal sewer networks, public works drainage projects, and urban water management systems.
Product Tags
Clamp Type
Slip-On Design
Backflow Prevention
Non-Slam
Stainless Steel Clamps
DN100-DN3000
EPDM Rubber
Stormwater
Sewage Discharge
Silent Closure
Solids Handling
Request a Quote for DEVEL Clamp Type Rubber Duckbill Check Valves
Contact Henan Devel Fluid Equipment Co., Ltd. for technical specifications, custom sizing, and competitive pricing.
