Hose Valve Angle Bronze JIS 5K - Nakajima - F7334
JIS 5K Nakajima F7334 Bronze Angle Fire Valve
Angle-pattern fire valve for marine water networks, type F7334, compliant with JIS standard. Features flanged connection, bronze body, nominal pressure 5K, angle flow configuration, and Nakajima hose outlet. Technical data are based on product registration and JIS F7334 specification.
Technical Application
The angle configuration is used where the fire hose outlet must be oriented 90° relative to the pipeline. Typical installations include ship fire stations, decks, engine rooms, bulkheads, and locations with limited space that preclude straight outlet arrangements.
Primary operating medium is fire water. For seawater or high salinity applications, verify galvanic compatibility, internal wetted parts, seat material, and gasket selection to prevent corrosion and leakage.
Selection Criteria
- Type standard: JIS F7334
- Flange class: JIS 5K
- Body material: bronze
- Network connection: flanged
- Hose outlet: Nakajima
- Flow pattern: angle
- Operation: manual
Prior to procurement, confirm DN, JIS 5K flange drilling, Nakajima hose compatibility, class society requirements, and access for operation and inspection.
Comparison with Straight Pattern
The straight F7334 is installed where the hose outlet aligns axially with the pipeline. The angle version is selected for directional change without additional fittings, reduced hose projection, and installation near bulkheads or decks.
Maintenance
Periodic inspection should include:
- seat leakage
- stem and packing tightness
- flange gasket condition
- wear or deposits on Nakajima coupling
- handwheel free rotation
- localized corrosion or mechanical stress
FAQ
Where is the Nakajima connection used?
For fire hoses with compatible marine couplings.
What does JIS 5K mean?
Indicates JIS flange/pressure class.
Is actuator mounting possible?
This listing refers to manual operation. No electric or pneumatic actuator is specified.
