Model No.: HWSV12
Outer Diameter: 7.8mm
Slit Size: 4mm
Application: Water Bottles
MOQ: 50,000pcs/ lot
Samples: Free Samples, Freight Collect
The 7.8mm one way valve is a compact duckbill silicone valve designed for bottle venting and fluid control applications. With an outer diameter of 7.8mm and a precision 4mm slit opening, the valve provides stable one-way airflow while maintaining excellent sealing performance in compact dispensing systems.
This silicone duckbill valve is mainly used for one-way air intake in squeeze bottles and liquid dispensing containers. When liquid is squeezed out from the bottle, the valve allows air to flow back quickly into the container, helping balance internal pressure and ensuring smoother dispensing performance.
The flexible duckbill slit structure remains normally closed under low pressure, effectively preventing liquid leakage, reverse flow, dust intrusion, and outside contamination during transportation or storage. Due to its reliable sealing capability, duckbill valves are widely used in various dispensing and packaging systems.
Manufactured from high-quality transparent solid silicone rubber, the valve offers excellent flexibility, durability, and long-term elastic recovery. Silicone material also provides strong resistance to aging, temperature variation, and environmental exposure, helping maintain stable valve performance during extended use.
The valve is produced using precision compression molding technology, which helps achieve accurate dimensions, smooth surface quality, and consistent slit cutting performance. This manufacturing process improves sealing reliability, product consistency, and overall dispensing stability.
The 7.8mm one way valve can be combined with slit valves, umbrella valves, and other silicone sealing components to optimize venting and liquid control performance in dispensing systems. Hopewell provides custom duckbill one way valves with customized dimensions, slit structures, silicone hardness, colors, and opening pressure according to different application requirements.
Item Name | 7.8mm One Way Valve |
Material | FDA Food Safe Solid Silicone |
Process | Compression Molding |
Color | Clear |
Hardness | 40 Shore A |
Outer Diameter | 7.8mm |
Cross Slit Size | 4mm |
Application | Water Bottles |
Squeeze Bottle Venting Systems:
Widely used in squeeze bottles to provide rapid air return during liquid dispensing, helping improve dispensing smoothness and user experience.
Liquid Dispensing Packaging:
Suitable for cosmetic packaging, personal care products, cleaning solutions, and other dispensing containers requiring one-way venting control.
Food & Beverage Packaging:
Can be used in sauce bottles, condiment packaging, and flexible liquid containers where reliable one-way airflow and leak prevention are required.
Consumer Product Packaging:
Applied in compact packaging systems requiring pressure balancing, anti-leak sealing, and controlled airflow management.
Multi-Valve Dispensing Systems:
Can be combined with umbrella valves, slit valves, and other silicone elastomer valves for optimized fluid control performance.
The valve is mainly used for one-way air intake and bottle venting, helping containers quickly recover air during liquid dispensing while preventing leakage and backflow.
Duckbill valves provide excellent sealing performance, simple structure, reliable one-way flow control, and stable long-term elasticity, making them ideal for dispensing applications.
The valve is made from transparent food-grade solid silicone rubber with excellent flexibility, durability, and environmental resistance.
The standard MOQ for the 7.8mm one way valve is 50,000 pieces per production lot.
Yes. Hopewell has one of the most complete public mold size ranges for silicone valves in China and can provide sample testing support for different duckbill valve applications.
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