Duckbill Valves for One-Way Flow Solutions
Product Number: V038710100
Duckbill valves are single-component, in-line, one-way check valves that are self-sealing. They are ideal for applications requiring immediate forward flow with a straight-through flow path. Assembly is simple—just drop the valve into a bore and secure it by clamping the flange.
Materials of Construction
- Part Number: V038710100
- Product Group: Duckbill
- Material Number: 1401M247
- Material Type: Fluorosilicone (FVMQ)
- Material Color: Orange
- Durometer: 57
Design Characteristics
- ID: 0.1010in, 2.57mm
- Barrel OD: 0.1580in, 4.01mm
- Flange OD: 0.2070in, 5.26mm
- L: 0.2600in, 6.60mm
Working Principle
Duckbill valves achieve backflow sealing through pressure-induced contact forces along the two side planes. To create an effective seal, some reverse pressure must be applied. In the forward flow direction, there is no distinct opening pressure; however, our laboratory uses a standard threshold of 1 cc/min for measurement purposes. Forward flow depends on the pressure differential across the valve's flow path and the degree of opening in the lip zone.
Photo/Rendering
Technical Drawing
Performance Characteristics
Opening Pressure
Diagram
Definition
Opening Pressure is the differential pressure required for the valve to achieve the specified flow threshold. As the flow threshold increases, the Opening Pressure will also increase. Conversely, lowering the flow threshold results in a decrease in Opening Pressure. Water test data is available upon request.
Reverse Leakage
Diagram
Definition
Leakage, or reverse flow, is measured by gradually increasing the backpressure across the valve, starting from zero. Please note that the leakage graph uses a different scale compared to the flow graphs. Water test data is available upon request.
Forward Flow
Diagram
Definition
Flow and differential pressure are measured simultaneously as the inlet pressure increases from zero. Once the maximum flow is reached, the pressure is gradually reduced back to zero, with flow and differential pressure measured throughout the process. The chart displays the minimum and maximum flow values recorded during tests of multiple samples at each pressure level. Water test data is available upon request.
Vernay Quality Policy
Vernay is committed to the highest level of quality and service to our customers. We focus on innovation and continuous improvement in all areas of our business and accomplish these goals through our quality management system. Maintain our existing quality certifications (ISO/IATF-16949, ISO 9001, and ISO 13485).