Model No.: HWSV11
Outer Diameter: 7.6mm
Cross Slit Size: 2.2mm
Application: Ink Catridge
MOQ: 50,000pcs/ lot
Samples: Free Samples, Freight Collect
The 7.6mm backflow preventer is a miniature silicone duckbill valve specially developed for compact fluid control applications. With an outer diameter of only 7.6mm and a precision 2.2mm slit opening, the valve is ideal for small dispensing systems, cartridge applications, and low-flow liquid management devices where installation space is limited.
Designed as a one-way backflow prevention valve, it allows air or liquid to flow in a single direction while effectively preventing reverse flow, leakage, and contamination. The precision slit structure provides stable opening pressure and reliable sealing performance during repeated dispensing cycles.
The valve features an undercut mounting structure that enables direct snap-fit assembly into plastic housings or dispensing components without additional retaining rings or fixing accessories. This design helps simplify assembly procedures, reduce component count, and improve overall production efficiency.
Due to its small slit size and stable silicone elasticity, the valve is especially suitable for ink cartridge dispensing and miniature liquid control systems. It helps maintain smooth dispensing performance while preventing ink backflow and unwanted air intrusion.
Manufactured from premium food-grade solid silicone rubber, the valve offers excellent flexibility, durability, and long-term sealing stability. Silicone material also provides strong resistance to aging, temperature changes, UV exposure, and harsh environmental conditions, ensuring stable performance throughout extended use.
The 7.6mm backflow preventer is produced using high-precision vacuum compression molding technology, which helps achieve accurate dimensions, clean slit cutting, and consistent valve performance. Hopewell specializes in custom silicone rubber valves and can customize slit size, hardness, dimensions, colors, and opening pressure according to different application requirements.
Item Name | 7.6mm Backflow Preventer |
Material | FDA Food Grade Solid Silicone |
Process | Vacuum Compression Molding |
Color | Clear |
Hardness | 50 Shore A |
Outer Diameter | 7.6mm |
Cross Slit Size | 2.2mm |
Application | Ink Catridge |
Ink Cartridge Dispensing Systems:
Widely used in ink cartridges and printer fluid systems to control ink flow, prevent leakage, and avoid backflow contamination.
Small Liquid Dispensing Devices:
Suitable for compact dispensing systems requiring precise low-flow liquid control and reliable one-way sealing performance.
Air Venting Applications:
Used for controlled one-way air release in miniature fluid or pressure balancing systems.
Medical & Laboratory Devices:
The compact structure and stable silicone performance make the valve suitable for certain low-flow medical consumables and laboratory liquid handling devices.
Consumer Electronics & Compact Fluid Systems:
Can be integrated into small electronic products or portable fluid management systems where space-saving design is required.
The valve is designed to allow one-way airflow or liquid flow while preventing reverse flow, leakage, and contamination inside dispensing systems.
Silicone rubber offers excellent flexibility, sealing performance, temperature resistance, and aging resistance, making it ideal for long-term fluid control applications.
Yes. Hopewell can customize slit dimensions, opening pressure, silicone hardness, and valve structure according to customer application requirements.
No. The undercut structure allows direct snap-fit installation without additional plastic retaining parts, helping simplify assembly.
Yes. Hopewell specializes in custom silicone rubber valves, including duckbill valves, umbrella valves, slit valves, air vent valves, and other precision molded silicone components for various industries.
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