Custom Standard Size 38MM One Way Duckbill Check Silicone Slit Valves Duckbill with Non Return Solution

Description:

Our Custom Standard Size 38MM One Way Duckbill Silicone Slit Valves are precision-engineered from 100% FDA- and LFGB-compliant, food-grade liquid silicone rubber (LSR) to ensure superior non-return functionality, leak-proof performance, and hygienic fluid control. Designed with a duckbill slit structure, these valves allow smooth forward flow while automatically sealing to prevent backflow, contamination, or leakage. Manufactured through advanced liquid silicone injection molding combined with precision slit-cutting technology, they deliver exceptional consistency in flow rate and sealing performance. Suitable for food & beverage packaging, medical devices, dispensing closures, and industrial fluid control, these valves combine high elasticity, durability, and chemical resistance for reliable long-term use.

Basic Information:

• Place of Origin: Xiamen, China
• Shape: Duckbill, cross-slit, or fully customized
• Brand Name: OEM
• Size: Standard 38mm (custom dimensions available)
• Minimum Order Quantity (MOQ): Flexible, small orders accepted
• Material: Food-grade liquid silicone rubber (LSR)
• Logo: Custom embossing, laser marking, or branding available
• Certifications: ISO 9001, IATF 16949, FDA, LFGB, RoHS
• Packaging: Tailored packaging options available
• OEM Services: Highly supported from design to production
• Primary Use: One-way flow control and leak-proof dispensing closures
• Sample Lead Time: 5–7 business days
• Sample Availability: Available upon request
• Production Lead Time: 20–25 business days

Benefits of Our Products:

• FDA- and LFGB-approved, 100% BPA-free liquid silicone
• One-way duckbill non-return design for efficient flow control
• Prevents backflow, leakage, and contamination
• Flexible hardness options (Shore A 30–70) for different flow rates
• Easy integration into dispensing caps, bottles, and medical devices
• Long-lasting durability with excellent chemical and temperature resistance
• Factory-direct pricing with fast lead times
• Free samples available for validation and testing

Quality Assurance:

Quality assurance for our 38MM Duckbill Check Silicone Valves is centered on product safety, sealing integrity, and performance consistency. Each batch of raw silicone is verified to meet FDA, LFGB, and RoHS standards. During production, rigorous testing is carried out with:

• Tensile testers & Shore A durometers to confirm elasticity and hardness
• Flow rate and opening pressure testers to ensure precise one-way operation
• Leak-proof integrity testers under varying pressure conditions
• Aging and chemical resistance chambers for durability testing
• Dimensional and visual inspections to guarantee uniform wall thickness and flawless surface finish
  Every valve is traceable and QC-verified in a cleanroom environment to meet international quality and hygiene standards.

Warum uns wählen?

• Extensive Expertise: Over 20 years in silicone valve and fluid control solutions.
• Customized OEM Services: From slit design and flow control engineering to branding integration.
• Streamlined Workflow: Rapid prototyping, mass production, and just-in-time delivery.
• Certified Manufacturing: ISO 9001 & IATF 16949 certified with full compliance testing.

Fabrikshow:

Our advanced facility integrates CNC machining, Mirror EDM, and precision wire cutting for in-house tooling development, ensuring molds with exceptional accuracy and repeatability. With 15 compression molding presses and 2 LSR injection molding systems, we are fully equipped for both small-batch and high-volume production. Quality assurance is maintained with 3D projectors, sealing testers, elasticity gauges, and automated slit-cutting machines, monitored by an experienced QC team. Supported by automated production systems such as AutoDryers, high-speed doming, and precision die-cutting, we consistently deliver precision-engineered silicone valves that meet the most demanding industry requirements.