Globe Valve Cast Steel with non return plug JIS 10K - F7471

Cast Steel Angle SDNR Valve JIS 10K F7472

The JIS F7472 is an angle pattern screw-down non-return (SDNR) valve with a cast steel body and flanged ends to JIS 10K standard. It is specified for marine piping systems where both isolation and prevention of reverse flow are required in a single unit. Product documentation refers to it as a cast steel 10K screw-down check angle valve, designed to JIS F7472-1996 and tested per JIS F7400-1996.

Operation

The valve changes flow direction by 90°. The handwheel actuates the stem to seat the disc. In the open position, the disc acts as a check element, restricting backflow to the upstream side.

Technical Specifications

• Type: angle globe valve SDNR
• Design standard: JIS F7472-1996
• Test standard: JIS F7400-1996
• Connection: flanged JIS 10K
• Sizes: DN50–DN200
• Body/bonnet: SC480 cast steel
• Seat/disc: SCS2 stainless steel
• Stem: SUS403
• Packing gland: BC6
• Gasket: non-asbestos
• Operation: handwheel

Test Pressure

Hydrostatic shell test: 2.1 MPa. Seat test: 1.54 MPa (additional seat test at 0.4 MPa per catalogue data).

Suitable Media

Applicable for marine water lines, seawater, steam, air, inert gases, and oil, provided process temperature, corrosion, and class requirements are met by the trim and manufacturer certification.

Selection vs F7471

F7472 is selected over F7471 when a 90° angle connection and flow change are required. Remains in JIS 10K series; for higher pressures, select higher class variants.

Maintenance

Inspect stem packing, seat/disc condition, free movement of the check element, and flange corrosion. For steam service, recheck after thermal cycling.