Globe Valve Bronze JIS 5K (Union Bonnet) - F7346

Bronze JIS 5K F7346 Union Bonnet Globe Valve

The JIS F7346 is a straight pattern globe valve with Union Bonnet construction and JIS 5K flanged ends, designed for manual isolation or flow regulation in auxiliary marine piping systems. The Union Bonnet design allows access to the bonnet/stem assembly for inspection and maintenance without disturbing the main piping installation.

Technical Specifications

• Design Standard: JIS F 7346-1996
• Test Standard: JIS F 7400-1996
• Connection: Flanged
• Pressure Class: JIS 5K
• Type: Straight globe valve, Union Bonnet
• Body: BC6
• Bonnet: BC6
• Disc: BC6
• Stem: C3771BD or BE
• Packing: Non-asbestos
• Handwheel: FC200
• Available DN: 15–40

Test Pressures

• Body: 1.05 MPa (hydrostatic)
• Seat: 0.77 MPa (hydrostatic)

Test values refer to manufacturing tests. Final selection must consider operating pressure, temperature, medium, actuation frequency, and class society requirements.

Suitable Applications

• Fresh water and service water lines
• Auxiliary engine room piping
• Oil lines (after verifying material compatibility)
• Low-pressure steam (within allowable temperature limits)
• Locations requiring maintainable Union Bonnet construction

Difference from F7301

The F7301 is also a bronze JIS 5K globe valve, but the F7346 features Union Bonnet construction. F7346 is selected where access to bonnet, stem, disc, and packing is a key maintenance criterion.

Selection Considerations

Confirm DN, JIS 5K flanges, face-to-face length (L), packing material, medium, pressure, temperature, and flow direction. Standard execution is manual; no electric or pneumatic actuator is specified in this documentation.