Globe Valve cast Iron with non return plug JIS 10K - F7375

Cast Iron SDNR Globe Valve JIS 10K F7375

The JIS F7375 is a straight-pattern cast iron globe valve with screw-down non-return (SDNR) function, designed for marine piping systems where both manual shut-off and check valve operation are required in a single unit. This product is specified as JIS 10K, constructed to JIS F7375 design and tested per JIS F7400.

Operating Principle

The disc is mechanically closed against the seat via handwheel and stem. When open, the disc can move with flow, providing non-return (check) functionality. Globe geometry results in higher pressure drop compared to gate valves but offers more defined shut-off characteristics.

Technical Data

• Type: Cast iron globe SDNR, straight pattern
• Connection: JIS 10K flanges
• Standards: JIS F7375 (design), JIS F7400 (testing)
• Sizes: DN50–DN300 (up to DN250 in product table)
• Body/Bonnet: FC200 cast iron
• Seat/Disc: BC6 bronze or SCS2 stainless steel (Class B / Class S)
• Stem: Brass C3771BD or SUS403
• Stem Sealing: Packing gland
• Operation: Handwheel

Pressure Testing

For DN200 and below: body hydrostatic test at 2.1 MPa, seat at 1.54 MPa. For DN250 and above: body at 1.5 MPa, seat at 1.1 MPa.

Suitable Media

Applied in marine lines for fresh water, seawater, air, steam, and oil. Material compatibility must be verified for temperature, corrosion, and classification society requirements.

Typical Applications

• Seawater cooling and service water systems
• Bilge, ballast, and fire main auxiliary lines
• Air or inert gas lines
• Lube oil or fuel oil (subject to project specs)
• Retrofit in JIS 10K flanged piping

Selection vs. Other Types

F7375 is selected over F7307 when non-return function is required. For 90° angle pattern, use F7376. For higher pressure, consider JIS 16K series.

FAQ

Can it be actuated?
Standard version is manual. Automation requires torque and stem travel assessment and mechanical adaptation.

What is checked during maintenance?
Packing, seat/disc wear, free movement of check disc, and body corrosion in seawater service.