JIS G5121 10K Flange End Stainless Steel Ball Valve
JIS G5121 10K Flange End SCS13/14 Stainless Steel Ball Valve is a high-performance quarter-turn valve designed for reliable shut-off and flow control in industrial piping systems. Manufactured in accordance with Japanese Industrial Standards (JIS), this valve combines robust stainless steel construction, excellent corrosion resistance, and dependable sealing performance, making it suitable for water treatment, chemical processing, marine applications, food production, and general industrial services.
Constructed from JIS G5121 stainless steel castings, the valve body is available in SCS13 and SCS14 materials. SCS13 is equivalent to CF8/SS304 stainless steel, while SCS14 corresponds to CF8M/SS316 stainless steel, providing enhanced resistance to chloride corrosion and aggressive media. These materials ensure long service life even under demanding operating conditions.

Product Overview
The valve utilizes a floating ball design that allows the ball to move slightly under line pressure, ensuring tight sealing against the downstream seat. With a simple 90-degree rotation of the handle or actuator, the valve can be fully opened or closed, providing fast and efficient operation. The full-port design minimizes pressure loss and ensures smooth fluid flow through the pipeline.
The flange ends are manufactured according to JIS standards, allowing easy installation and interchangeability with other JIS pipeline components. The JIS 10K pressure rating corresponds to a nominal pressure of approximately 1.0 MPa (10 bar), making the valve suitable for a wide range of industrial applications.
Main Features
1. Premium Stainless Steel Construction
BOPIN JIS 10K ball valves are manufactured using high-quality stainless steel castings conforming to JIS G5121 requirements. The available material options include:
- SCS13 (equivalent to ASTM CF8 / SS304)
- SCS14 (equivalent to ASTM CF8M / SS316)
These materials offer excellent mechanical strength, corrosion resistance, and durability in various service environments. SCS14 is particularly suitable for seawater, chemical fluids, and chloride-containing media.
2. Full-Port Design
The full-bore construction provides an unrestricted flow path through the valve. This design minimizes pressure drop, reduces turbulence, and improves overall system efficiency. It is especially beneficial in applications where maintaining flow capacity is critical.
3. Reliable Tight Shut-Off
The precision-machined stainless steel ball and PTFE seats provide bubble-tight sealing performance. The resilient seat design ensures reliable shut-off even after thousands of operating cycles, helping prevent leakage and reducing maintenance requirements.
4. Blow-Out Proof Stem
For enhanced operational safety, the valve incorporates a blow-out proof stem design. The stem is internally mounted within the valve body, preventing accidental stem ejection under pressure and ensuring safe operation throughout the valve's service life.
5. Easy Operation
The quarter-turn mechanism allows quick opening and closing with minimal torque. The valve can be operated manually with a lever handle or fitted with pneumatic and electric actuators for automated process control.
Technical Specifications
| Item | Specification |
|---|---|
| Valve Type | Floating Ball Valve |
| Pressure Rating | JIS 10K |
| Size Range | 15A – 200A (larger sizes available upon request) |
| Body Material | SCS13, SCS14 |
| Ball Material | Stainless Steel |
| Seat Material | PTFE / RPTFE |
| Connection Type | Flanged End |
| Operation | Lever, Gear, Pneumatic, Electric |
| Temperature Range | -20°C to 220°C |
| Bore Type | Full Port |
| Design Standard | JIS B2071 |
| Face-to-Face | JIS B2002 |
| Flange Standard | JIS B2220 |
| Inspection & Testing | JIS B2003 |
Advantages of BOPIN JIS 10K Ball Valve
Excellent Corrosion Resistance
The use of SCS13 and SCS14 stainless steel enables the valve to withstand corrosive environments, extending service life and reducing maintenance costs. This makes the valve suitable for chemical plants, water treatment facilities, and marine installations.
Low Operating Torque
The polished stainless steel ball and high-quality seat materials provide smooth operation and low torque requirements. Operators can easily open and close the valve even after prolonged service.
Long Service Life
High-quality casting processes, precision machining, and strict quality control ensure consistent performance and durability. The valve can withstand frequent operation without compromising sealing performance.
Reduced Maintenance
The simple internal structure contains fewer moving parts compared to many other valve types. As a result, maintenance requirements are minimal, contributing to lower operating costs.
Flexible Automation Options
The valve can be supplied with ISO mounting platforms and actuator-ready designs, allowing easy integration into automated control systems.
Applications
The BOPIN JIS G5121 10K Flange End SCS13/14 Stainless Steel Ball Valve is widely used in various industries, including:
Water Treatment Systems
The corrosion-resistant stainless steel construction makes the valve ideal for potable water distribution, wastewater treatment plants, desalination facilities, and industrial water systems.
Chemical Processing
The valve effectively handles a variety of chemical fluids, acids, alkalis, and solvents where corrosion resistance is essential.
Food and Beverage Industry
Smooth internal surfaces and stainless steel materials support hygienic operation and help maintain product purity.
Marine and Shipbuilding
SCS14 stainless steel offers excellent resistance to seawater environments, making the valve suitable for marine pipelines and offshore installations.
Oil and Gas Industry
The valve provides reliable shut-off for fuel systems, process lines, and utility services in refineries and petrochemical plants.
General Industrial Services
The valve is commonly used in compressed air systems, cooling water circuits, process pipelines, and utility networks.
Quality Assurance
BOPIN manufactures its JIS stainless steel ball valves using advanced investment casting technology, CNC machining centers, and rigorous inspection procedures. Each valve undergoes pressure testing, seat leakage testing, and dimensional inspection in accordance with JIS B2003 requirements before shipment. This ensures every valve meets stringent quality standards and customer expectations.






