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We are a leading ISO13485 certified manufacturer of duckbill valves since 2009. Specializing in micro plastic and rubber duck bill valves for precise flow control. With 17 years of experience, we ensure precision and reliability in medical, industrial, and chemical applications.

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In the demanding world of marine and industrial rubber products, experience and manufacturing capability are everything. Nanjing Deers Industrial Co., Ltd. , established in 2011, has spent over 15 years building a reputation as a specialized manufacturer and supplier of high-performance rubber products . Headquartered in Nanjing, Jiangsu Province, the company combines extensive production facilities with a commitment to quality that serves clients across the globe . This post explores Nanjing Deers’ industrial capabilities, their comprehensive product portfolio, and how their rubber engineering expertise positions them to manufacture custom silicone duckbill valves for demanding applications.

The Nanjing Deers Story: Built on Industrial Scale Since 2011

Nanjing Deers Industrial Co., Ltd. was founded in February 2011 with a clear mission: to become a leading supplier of high-quality rubber products for marine, dredging, and industrial applications . The company operates with a registered capital of 50 million RMB and has grown into a modern enterprise that integrates research, design, production, and sales .

The company’s manufacturing footprint is impressive:

Nanjing Deers operates with advanced production equipment and comprehensive testing facilities, ensuring that every product meets rigorous quality standards . Their philosophy, “Honesty is the first step to do everything,” reflects a commitment to integrity and customer satisfaction that has earned them clients worldwide .

Core Expertise: Heavy-Duty Rubber Products

While Nanjing Deers is not primarily known for small silicone components, their expertise in rubber compounding and large-scale manufacturing demonstrates the depth of their material science capabilities. Their core product lines include:

Product CategoryApplicationsKey Features
Marine Rubber FendersHarbor protection, dock safety, ship-to-ship transferHigh energy absorption, low reaction force, durability in marine environments 
Dredging HosesFloating and submerged pipelines for sand and slurry transportAbrasion-resistant, flexible, available with flanged or welded connections 
Rubber BearingsBridge supports, vibration isolationLoad-bearing capacity, weather resistance
Oil and Discharge HosesOffshore oil transfer, marine discharge operationsCertified by international authorities, self-floating designs available 
HDPE PipesWater supply, gas distribution, dredging pipelinesCorrosion-resistant, lightweight, long service life 

In 2008, Nanjing Deers successfully developed self-floating single-frame and double-frame oil hoses, which have been certified by international authority organizations and put into large-volume production .

Silicone Duckbill Valves: A Natural Extension of Rubber Expertise

A duckbill valve is a one-way check valve with a flexible sleeve molded into the shape of a duck’s bill. Forward flow pressure opens the bill, allowing fluid or air to pass. When flow stops or reverses, the bill instantly collapses, creating a tight seal that prevents backflow. When manufactured from silicone rubber, these valves offer distinct advantages for applications requiring purity, flexibility, and reliability.

Given Nanjing Deers’ extensive experience with rubber compounding and precision molding, they are well-positioned to manufacture custom silicone duckbill valves. Their rubber product lines demonstrate mastery of:

Potential Duckbill Valve Product Range

While Nanjing Deers does not publicly list duckbill valves as a standard product, their manufacturing capabilities suggest they could produce the following types of silicone duckbill valves for custom applications:

Potential Valve TypeMaterial OptionsConnection TypeTypical Applications
Medical-Grade Silicone Duckbill ValvesFDA-grade silicone, USP Class VI materialsBarbed, luer, or custom connectionsRespiratory devices, infusion pumps, diagnostic equipment
Industrial Silicone Duckbill ValvesHigh-temperature silicone, custom compoundsThreaded, flanged, or slip-onChemical dosing, water treatment, industrial automation
Marine Duckbill Check ValvesMarine-grade rubber compoundsSlip-on with stainless steel clampsBilge pumps, deck drains, cooling water systems
Custom-Engineered Duckbill ValvesCustomer-specified materialsAs per design specificationsOEM applications, specialized equipment

The company’s ability to work with both rubber and HDPE materials suggests they could also integrate duckbill valves into larger assemblies or pipeline systems.

Key Application Scenarios

With their deep experience in marine and industrial applications, Nanjing Deers could supply silicone duckbill valves for the following scenarios:

Marine and Offshore
Given the company’s primary market focus, duckbill valves could serve critical functions in:

Dredging and Slurry Transport
Nanjing Deers’ dredging hose expertise could extend to:

Industrial Process Applications
In industrial settings, their rubber manufacturing capabilities could support:

Medical and Healthcare
With appropriate material certifications, silicone duckbill valves could serve:

Recent News and Industry Engagement

May 2022: WODCON XXIII Participation
Nanjing Deers attended the WODCON XXIII conference in Copenhagen, Denmark, the premier global event for the dredging industry . Hosted by the World Organization of Dredging Associations (WODA) and the Central Dredging Association (CEDA), the conference brought together industry elites, experts, and scholars from more than 10 countries and regions . The company’s participation demonstrates their commitment to staying at the forefront of industry technology and networking with global partners.

Ongoing Export Activity
Nanjing Deers maintains active international trade, with export data showing regular shipments to the United States, India, Colombia, Vietnam, and other countries . Their products, including floating rubber hoses and discharge hoses, have been shipped through Shanghai port to destinations including Tampa, Florida . This global reach demonstrates their ability to serve international customers with reliable logistics.

Recent Product Development
The company continues to innovate, offering dredge ball joints with tilting angles from 15 to 20 degrees and working pressures from 10 to 30 bar . These products feature welded or flanged connections, robust construction, and designs optimized for harsh environments .

Quality Assurance and Certifications

Nanjing Deers maintains rigorous quality control throughout the production process:

Their concept is clear: “Quality First, Customer Focus, Innovation Pursuit” .

Contact Information and Global Distribution

For inquiries about custom silicone duckbill valves or any of their standard rubber products, Nanjing Deers welcomes contact through multiple channels:

Primary Contact Information:

Company Address:

International Trade Presence:
Nanjing Deers has export experience dating back to 2008 and maintains active shipping through major ports including Shanghai . Their products reach customers in the United States, India, Colombia, Vietnam, and other markets worldwide .

For the most current product information and to discuss custom silicone duckbill valve requirements, contacting the company directly through their website or WhatsApp is recommended.

Conclusion

For over 15 years, Nanjing Deers Industrial Co., Ltd. has demonstrated excellence in rubber product manufacturing, serving demanding industries from marine fenders to dredging hoses. With 30,000 square meters of factory space, over 500 employees, and 12 R&D centers, they possess the scale and expertise to take on custom rubber projects .

While silicone duckbill valves are not currently listed as a standard product, the company’s deep experience with rubber compounding, precision molding, and international quality standards positions them as a potential partner for custom-engineered fluid control components. Their participation in global industry events like WODCON XXIII and their active export business demonstrate a commitment to serving international clients with high-quality solutions .

For engineers and procurement professionals seeking custom silicone duckbill valves for marine, industrial, or specialized applications, Nanjing Deers offers the manufacturing capability and quality commitment to bring your project to life. Contact their team today through www.chinarubberfender.com or via WhatsApp at +86 13376094258 to discuss your specific requirements.