Globe Valve Bronze with non return plug JIS 5K - F7351

Bronze SDNR Globe Valve JIS 5K F7351

SDNR (Screw-Down Non-Return) globe valve for marine and industrial pipelines requiring manual isolation and integrated non-return (check) function. Straight-through flow design, flanged ends per JIS 5K. Construction and materials are specified for compatibility with seawater and industrial fluids.

Operation

The disc moves vertically via a handwheel and rising stem. When open, the valve also acts as a non-return device, reducing the risk of backflow in seawater, auxiliary, or service lines. Manual closure is possible for isolation.

Technical Specifications

• Type: Globe valve SDNR / screw-down non-return
• Connection: Flanged, JIS 5K
• Reference Standards: Body to JIS F7400, flanges to JIS B2220
• Materials: Body bronze, disc bronze/brass, stem brass
• Size Range: DN15–DN65
• Bonnet: Screwed (15A–40A), bolted (50A–65A)
• Stem Sealing: Gland packing
• Certification: 3.1 / 3.2, class society inspection on request

Operating Conditions

Indicative limits: 7 bar at 120°C for non-shock water; 5 bar at 205°C for air, gases, steam, or pulsed water. Final limits depend on manufacturer certification and line sizing.

Suitable Media

• Cold and hot water
• Seawater
• Saturated steam
• Oil
• Neutral, non-aggressive liquids

Typical Applications

• Marine seawater cooling systems
• Service and hot water lines
• Auxiliary engine room circuits
• Low-pressure steam lines
• Locations requiring both isolation and non-return in a single valve

Valve Selection

F7351 is selected for pipelines with JIS 5K flanges where precise flow regulation is not required. Compared to a standard globe valve, it adds a non-return function. Compared to a separate check valve, it allows manual shut-off.

FAQ

Can it be used as an isolation valve?
Yes, but consider the pressure drop typical of globe valves.

Is actuator mounting possible?
Standard version is manual. Automation requires separate technical assessment.

What maintenance is required?
Check stem packing, seat/disc condition, and operating torque, especially in seawater or steam service.