OEM Medical Grade Silicone Gasket & Valve from Chinese Supplier
The Duckbill Check Valve, also known as a Duckbill Valve or Non-Return Valve, is an elastomeric component designed to prevent backflow and allow forward flow. Featuring duckbill-shaped elastomeric lips, these valves are available in various materials and designs tailored for different fluid handling and service conditions.Materials of Duckbill Check Valves:
Silicone gaskets and valves are precision-molded using liquid silicone rubber (LSR) injected into molds under controlled temperature and pressure conditions. Post-curing enhances their mechanical properties and ensures dimensional accuracy. These components are known for their resilience, durability, and resistance to extreme temperatures and chemicals, meeting rigorous performance standards across industrial applications.
Materials Used in Duckbill Check Valves:
– FDA and Medical Grades: FDA and medical-grade umbrella valves are reusable and comply with Food and Drug Administration regulations. They operate effectively within a temperature range of -40°C to 230°C, exhibiting superior tensile strength, elongation, and abrasion resistance compared to most organic elastomers. Silicone offers significant advantages in low-temperature flexibility over traditional organic rubbers.
– LSR and Liquid Silicone Rubber: Unlike conventional rubbers, LSR maintains its properties across extreme temperatures, making it suitable for automatic sterilization at high temperatures or use in cold environments.
– Fluorosilicone (FVMQ): Offers excellent oil resistance, strong acid and alkali resistance, antioxidant properties, and shares common advantages with silicone regarding temperature range (-40°C to 230°C).
– EPDM: Known for exceptional ozone aging resistance, weather resistance, and heat resistance.
– Buna N (Nitrile Rubber): Demonstrates excellent oil resistance.
Key Design Considerations for Duckbill Valves:
The quality of Duckbill Check Valves hinges on design, material and hardness selection, and the precision of the slit cutting process. For effective slit cutting, the design must include a flat surface on the cutting side to ensure accurate positioning of the die-cutting tool, as illustrated below.
Our Advantages:
- Advanced Precision Mold-Making: Utilizing cutting-edge technology for precise mold production.
- Extensive Experience: Expertise in check valve molding and slit cutting, ensuring critical sealing functions and optimal opening pressures.
- Comprehensive Knowledge: Deep understanding of elastomer valves for diverse applications and uses.
- Clean Room Production: State-of-the-art clean room facilities for rubber valve manufacturing and assembly.
- Expert Team: Professional engineers, quality control specialists, and a dedicated sales team proficient in one-way valve flow control technology.
- One-Stop Service: Complete solutions for silicone rubber, plastic, and LSR molding, including production, assembly, and packaging.
- Design Support: Offering value-added services for one-way valve design, tailored to your specific ideas and requirements.
Primary Applications of Duckbill Valves:
Duckbill Valves and LSR Duckbill Valves are essential components used as sealing gaskets and flow control check valves for air and liquid, as well as nipple nozzles. Commonly employed in breast pumps for mother and baby care products, these valves are primarily made from FDA-grade high-elastic silicone or LSR materials through compression molding and Liquid Injection Molding (LIM).
Medical Applications:
Duckbill Valves and Medical Silicone Lip Valves are typically crafted from low-compression, high-tear resistance silicone and LSR. Designed with duck-shaped lips, these valves open at low air pressure for pressure relief and close securely under higher air and hydraulic pressure to ensure effective sealing and backflow prevention.
General Use:
Often used as lip check valves, membrane seals, and gaskets, Duckbill Valves are combined with silicone tubing and plastic tube connectors to function as one-way or flow control valve components. They are vital in various medical devices, including:
– Patient valves in manual resuscitators and respirators
– CPR masks
– Anesthesia apparatus and surgical equipment
– Sleep monitors
These applications highlight the versatility and reliability of Duckbill Valves in critical healthcare and consumer products.
