Gate Valve Cast Iron JIS 16K - F7369

JIS 16K F7369 Cast Iron Gate Valve

Flanged cast iron gate valve for marine isolation networks, designed in accordance with JIS F 7369-1996. Pressure class is JIS 16K, with testing per JIS F 7400-1996. Intended for fully open or fully closed operation; not suitable for throttling or continuous flow regulation.

Technical Specifications

• Connection: Flanged
• Nominal Pressure: 16K
• Sizes: DN50 to DN200
• Body Test Pressure: 3.3 MPa
• Seat Test Pressure: 2.42 MPa
• Body / Bonnet / Disc: FC200 cast iron
• Seats: BC6 or SCS2
• Stem: CA771BD or SUS403
• Gland: BC6
• Gasket: Non-asbestos
• Handwheel: FC200

Marine Network Applications

The JIS 16K F7369 is specified where design pressure exceeds 10K or 5K classes. Typical installations include:

• sea water or fresh water lines,
• engine room cooling circuits,
• pump manifolds,
• auxiliary ship systems,
• isolation lines with JIS 16K flanges.

Selection Criteria

Selection is based on operating pressure, JIS flange compatibility, piping material, and media. Gate valve design minimizes pressure drop when fully open. Prolonged operation at intermediate positions can cause seat wear, noise, and vibration.

Maintenance and Leakage Control

Inspection should cover seat condition, stem packing, bonnet gasket, flange alignment, and cast iron body corrosion. For seawater systems, check galvanic compatibility between cast iron, bronze components, and piping.

FAQ

When is JIS 16K selected over JIS 10K?
When line design pressure or test requirements call for 16K class.

Is it suitable for flow regulation?
No. This is an isolation valve.

Which design standard applies?
The product is designed per JIS F 7369-1996.