Silicone Dispensing Valve

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Product Type

Cross Slit Valve: Leak Proof Silicone Valves

Duckbill Valve: One-way Flow Control Silicone Valves

Umbrella Valve: Tight-Seal Silicone Valves

Custom Silicone Valves: Bio-compatible, Efficient Performance


 About YEJIA

Your Trusted Manufacturer of No Leakage Silicone Valves

YEJIA aims to be the most competitive silicone valves manufacturer in China since 2009. We strive to earn the trust and satisfaction of customers worldwide through outstanding quality, innovative technology and attentive service.

YEJIA is a leading manufacturer of silicone valves with over a decade of experience in LSR injection molding. With over 10,000sqm silicone molding workshops, including clean production workshops, YEJIA has been certified by ISO13485, ISO9001, ISO14001, IATF16949, and ISO45001, demonstrating a commitment to high-quality production processes. The engineering team, with over 30 years of experience, has provided custom services for numerous Fortune 500 enterprises.

YEJIA is committed to continuously improving our LSR injection molding and overmolding capabilities and production capacity to provide customers with precision, quality and efficient silicone products across various industries.

Mold Design

Mold Making 

Production Workshop 

Automatic Production


Our Service

Product Design Evaluation& Optimiztion

LSR Injection Molding

Plastic Injection Molding

Performance and Functional Test

Assembly Proposal

Tailor-made Packaging

Silicone Dispensing Valve Manufacturing Process

The manufacturing process for silicone one way valves is a complex procedure that requires close attention to detail and precision at every step.

Mold Design& Mold Making

The first crucial step is mold design, where a detailed plan is created for the shape and dimensions of the valve. This is followed by mold making, where the physical mold is created to produce the valves. Our company, YEJIA, has a professional engineering team and advanced molding making and inspection equipment to ensure accuracy and consistency for molds of custom silicone one way valves.

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Silicone Molding

Once the mold is made, the silicone molding process begins. There are two main methods for molding silicone one way valves: compression molding and liquid silicone rubber (LSR) injection molding. Compression molding involves placing a pre-measured amount of silicone material into the mold, which is then compressed under high pressure and heat to form the final product. LSR injection molding, on the other hand, involves injecting liquid silicone rubber into the mold under high pressure and heat, which then cures into the final product.

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Slit Cutting

After molding, the valves undergo a slit cutting process to create a small slit to allow air or fluid to flow in one direction only. YEJIA has developed an automatic punching production line to improve production efficiency and reduce defective rates.

Quality Control

Quality control is a critical aspect of the manufacturing process to ensure that every silicone one way valve shipped to clients is 100% qualified. YEJIA has invested in automated optical inspection (AOI) equipment, which detects any defects or imperfections in the valves such as bubbles or irregularities in shape or size. Additionally, our quality control team inspects every single valve after AOI to ensure that each product meets the highest standards of quality and functionality.

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The manufacturing process for silicone one way valves involves several key steps that require careful attention to detail and precision. From mold design and mold making to silicone molding, slit cutting, and quality control, each step is critical to ensuring that the final product meets the highest standards of quality and functionality. At YEJIA, we are committed to delivering high-quality custom silicone one way valves to our clients.


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Custom Silicone One Way Valves

Silicone one way valves play a crucial role in numerous industries and consumer products, owing to their ability to prevent backflow, withstand high temperatures and chemicals, and maintain durability. For over a decade, YEJIA has been a trusted manufacturer of custom silicone valves, backed by years of experience, advanced production equipment, and strict quality control system. We take pride in our ability to deliver tailored solutions that meet the unique needs of our clients. We welcome the opportunity to work with you and deliver custom silicone one way valves that meet the highest standards of quality and performance. Should any chance, highly welcome to visit our factory.