COMPANY PROFILE
China Marine & Industrial Valve Supplier
J Sailing Flow Control System Co., Ltd. is a valve supplier based in Changzhou, Jiangsu, China. We work with valve factories producing bronze and ductile iron valves and source complementary products from other valve manufacturers. This approach allows us to support customers with a broader product range through one point of contact.
Our role goes beyond sourcing. We provide technical drawings, coordinate production requirements, inspect every valve before dispatch, and arrange packing according to customer instructions. From the initial inquiry to shipment preparation, we help ensure that each order meets the agreed specifications.
Bronze and ductile iron valves are produced by our own factory. We coordinate key dimensions, part material, production schedules, and in-process inspection. If customers request changes during production or issues arise at the factory, we communicate promptly with both parties to clarify requirements and agree on the necessary adjustments, ensuring that the finished valves meet the customer’s confirmed specifications.
Customers can source multiple valve products through JS Flow Control, reducing the time spent communicating with separate suppliers and coordinating individual orders.
Our product range includes ball valves, gate valves, globe valves, check valves, butterfly valves, quick-closing valves, self-closing valves, storm valves, fire hose valves, diaphragm valves, safety valves, pressure-reducing valves, steam traps, mudboxes, and strainers.Valves can be designed and manufactured according to applicable international standards including DIN, ANSI, JIS, API and GOST requirements.
Our valves are used in seawater systems, fuel and oil pipelines, cooling-water systems, fire-fighting systems, chemical processing lines, water treatment facilities, utility systems, and industrial equipment packages. We work with valve distributors, engineering companies, shipyards, equipment manufacturers, and project contractors worldwide.
At JS Flow Control, we make valve procurement simpler through flexible sourcing, clear technical communication, and quality control before dispatch. Our goal is to deliver valves that meet your requirements and become a dependable partner for your ongoing supply needs.
Own Mold & Specialized Production
Drawing Support
Prompt Price & Technical Response
Experience Serving Brazil, Europe and the Middle East Area
APPLICATIONS
Valve Solutions for Diverse Environment
Marine & Shipbuilding
Water Treatment
Petrochemical
Oil & Gas
Why Choose Us
Product Advantages
OEM/ODM Expertise
Advanced CNC machining and strong R&D capabilities to provide flow control solutions tailored to your precise technical drawings.
High Quality Standard
Designed and manufactured strictly to international standards DIN/ANSI/JIS/API 6D
Certified Excellence
Available ABS,CCS,DNV,LR,BV,NK,RINA,RMRS classification certificates for marine valves
Global Reliable Partner
Competitive B2B pricing, efficient logistics, professional and fast-response technical support.
factory
Visit Our Factory
Certificate
Qualification Certification
Quality Management
Strict Quality Management and Control
Visual Inspection
We check for visible defects such as cracks, porosity, scratches, coating damage, or missing components to ensure every product meets our quality and appearance requirements before shipment.
Material Verification
Through material identification, certificate review, and chemical composition checks where required, we confirm that valve bodies, discs, stems, and other components meet the required material grade and are suitable for the intended service conditions.
Dimension & Function Inspection
We check face-to-face length, flange dimensions, bore size, connection threads, and installation interfaces. Valve operation, including opening, closing, and actuator or gearbox movement where applicable, is also checked to ensure smooth and reliable performance.
Pressure Testing
Every valve undergoes hydrostatic pressure testing to verify shell strength and seat tightness. The test confirms that the valve body, bonnet, joints, and sealing surfaces can withstand the specified pressure without leakage, providing dependable performance in marine and industrial service.
CERTIFICATION SUPPORT
Classification Society Certification for Marine Valves
We can provide ABS, RMRS,DNV, LR, BV and NK classification certificates for marine valves.
