JIS 16K Screw-Down Check Valves
JIS 16K screw-down check valve features a robust cast iron FC20 body with bronze BC6 seat and disc, delivering exceptional corrosion resistance and reliable sealing performance. Equipped with a precision brass C3771BD stem and screw-down mechanism, it enables accurate flow control while effectively preventing backflow in high-pressure piping systems.
Overview
Application:Ideally suited for marine steam, air, fuel oil, lubrication oil, fresh water, and water feeding lines, this SDNR valve operates reliably at temperatures up to 205°C and pressures up to 16kgf/cm². Widely used in shipbuilding, offshore platforms, and industrial fluid control systems where dependable non-return functionality and flow regulation are critical.
Material Specification:
| Part Name | Material | Code |
| 1-Body | Cast Iron | FC20 |
| 2-Seat | Bronze | BC6 |
| 3-Disc | Bronze | BC6 |
| 4-Stem | Brass | C3771BD |
Technical Specification:
| Nominal Diameter (DN) | Test Pressure MPa [kgf/cm2] | |
| Body | Seat | |
| 300 or less | 1.03 [10.5] | 0.76 [7.7] |
| 350 and 400 | 0.88 [9] | 0.65 [6.6] |
Drawing:
Dimensions:
| Size | L | D | C | No. | h | t | H | D₂ | kg |
| 50 | 220 | 155 | 155 | 8 | 19 | 20 | 285 | 160 | 19.6 |
| 65 | 270 | 175 | 175 | 8 | 19 | 22 | 310 | 200 | 28.3 |
| 80 | 300 | 200 | 200 | 8 | 23 | 24 | 340 | 224 | 40.4 |
| 100 | 350 | 225 | 225 | 8 | 23 | 26 | 385 | 250 | 56.9 |
| 125 | 430 | 270 | 270 | 8 | 25 | 26 | 455 | 315 | 89.5 |
| 150 | 500 | 305 | 305 | 12 | 25 | 28 | 510 | 355 | 123 |
| 200 | 570 | 350 | 350 | 12 | 25 | 30 | 630 | 450 | 188 |
