Stop Check Valves

Screw-down check globe valves for marine service combine manual isolation with automatic backflow prevention. They are used in shipboard piping systems where shut-off capability is required together with restriction of reverse flow toward pumps, heat exchangers, tanks, or auxiliary equipment. Operation is based on a check disc/plug, while the handwheel mechanism allows positive mechanical closure for maintenance, line isolation, or equipment protection.

This category includes straight-pattern and angle-pattern JIS designs with flanged ends in 5K, 10K, and 16K pressure classes. Available series include bronze valves F7351, F7352, F7409, and F7410; cast iron valves F7375, F7376, F7377, and F7378; and cast steel valves F7471 and F7472.

Bronze-bodied valves are generally applied in auxiliary water systems and smaller-bore marine services, subject to compatibility with the process medium and installation environment. Cast iron 10K and 16K types are used in general engine-room services. Cast steel constructions are selected where higher mechanical strength is required or where operating pressure and temperature impose stricter material and pressure-retaining requirements.

For reference, type F7375 is specified to JIS F7375-1996, with testing in accordance with JIS F7400-1996 and a hydraulic shell test pressure of 2.1 MPa. Type F7471 is specified to JIS F7471-1996, also tested to JIS F7400-1996, with hydraulic shell testing at 2.1 MPa.

Valve selection should consider JIS pressure class, flow direction, straight or angle installation geometry, body material, handwheel accessibility, pressure drop, and periodic inspection requirements for seat, disc, stem, and packing. Media type, allowable leakage, maintenance interval, and service temperature should also be checked before specifying the valve for continuous marine operation.

Globe Valve Bronze with non return plug JIS 5K - F7351

Bronze SDNR Globe Valve JIS 5K F7351 SDNR (Screw-Down Non-Return) globe valve for marine and industrial pipelines requiring manual isolation and integrated non-return (check) function. Straight-through flow design, flanged ends per JIS 5K. Construction and materials are specified for compatibility with seawater and industrial fluids. Operation The disc...

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Globe Valve Angle Bronze with non return plug JIS 5K - F7352

Angle SDNR Globe Valve JIS 5K F7352 Bronze angle globe valve, SDNR – screw-down non-return type, designed for marine piping systems requiring both shut-off and non-return (check) functionality in a single valve. Classified as angle pattern, flanged, JIS 5K, type F7352. Operation The valve changes flow direction by 90°. The rising stem mechanically seats...

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Globe Valve Bronze with non return plug JIS 16K - F7409

SDNR Straight-Through Globe Valve JIS 16K F7409 The F7409 is a flanged, straight-pattern Screw Down Non Return (SDNR) globe valve designed for marine piping systems with JIS 16K flange connections. It combines manual shut-off and non-return (check) functionality in a single unit. Product specification classifies it as bronze-bodied, flanged, JIS 16K,...

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Globe Valve Angle Bronze with non return plug JIS 16K - F7410

Angle SDNR Valve JIS 16K F7410 The F7410 is an angle pattern Screw Down Non Return (SDNR) valve with JIS 16K flanged ends. It is used in marine piping systems where manual shut-off and non-return functions are required in a single valve. Product documentation specifies bronze construction, angle flow, flanged JIS 16K connection. Operation Flow direction...

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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...

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Globe Valve Angle Cast Iron with non return plug JIS 10K - F7376

Cast Iron Angle SDNR Valve JIS 10K F7376 Technical note: The page references JIS F7378, but type F7376 corresponds to a cast iron angle SDNR (screw-down non-return) valve per JIS 10K. F7378 refers to the equivalent 16K series. Operating Description The JIS F7376 is an angle globe valve of SDNR – screw-down non-return type. Flow direction changes by 90°,...

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Globe Valve cast Iron with non return plug JIS 16K - F7377

Cast Iron SDNR Valve JIS 16K F7377 The JIS F7377 is a straight pattern cast iron SDNR (screw-down non-return) valve designed for marine piping systems with JIS 16K flanged connections. It provides mechanical shut-off via handwheel and non-return (check) function when open. The standard covers cast iron 16K screw-down check globe valves for shipbuilding...

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Globe Valve Angle Cast Iron with non return plug JIS 16K - F7378

Cast Iron Angle SDNR Valve JIS 16K F7378 The JIS F7378 is an angle pattern cast iron SDNR (screw-down non-return) valve for marine piping systems with JIS 16K flanged connections. Product classification: angle SDNR valve with non-return function, type F7378. Operation The valve changes flow direction by 90°. The handwheel actuates a disc that seats...

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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...

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