The NIBCO® bronze Ring Check® valve is uniquely designed with an in-line, spring assisted self-closing disc. The lift check valve prevents backflow by automatically closing when fluid reverses direction. With a PTFE disc, the check valve is recommended for steam service. The NIBCO® Ring Check® valve has threaded end connections for ease of installation. This check valve may be installed in horizontal positions or vertical with flow moving up. Please refer to NIBCO technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Choose NIBCO® check valves for the most specified, versatile and economical valve option in commercial, mechanical and industrial applications.
OVERVIEW
125 psi/8.6 bar saturated steam to 353°F/178°C 250 psi/17.2 bar non-shock cold working pressure In-line lift-type Spring actuated (1/2 psi cracking pressure) PTFE resilient seat disc Class 125 threaded end connections Use in U.S. drinking water applications is prohibited after January 3, 2014 Conforms to MSS SP-80 Size range 3/8″ to 2″ Ring Check® is a registered trademark of NIBCO INC.
| Size | Dimensions | Weights | Master | |||||||
| A | B | C | ||||||||
| In. | mm. | In. | mm. | In. | mm. | In. | mm. | Lbs. | Kg. | Ctn. Qty. |
| 3/8 | 10 | 2 | 51 | 1.38 | 35 | 1.44 | 37 | 0.41 | 0.19 | 100 |
| 1/2 | 15 | 2.06 | 52 | 1.38 | 35 | 1.19 | 30 | 0.36 | 0.16 | 100 |
| 3/4 | 20 | 2.25 | 57 | 1.63 | 41 | 1.31 | 33 | 0.48 | 0.22 | 100 |
| 1 | 25 | 2.63 | 67 | 2 | 51 | 1.5 | 38 | 0.77 | 0.35 | 50 |
| 1 1/4 | 32 | 2.94 | 75 | 2.38 | 60 | 1.69 | 43 | 1.14 | 0.51 | 30 |
| 1 1/2 | 40 | 3.31 | 84 | 2.75 | 70 | 2 | 51 | 1.63 | 0.74 | 30 |
| 2 | 50 | 3.69 | 94 | 3.38 | 86 | 2.31 | 59 | 2.27 | 1.03 | 10 |
| PART | SPECIFICATION |
| 1. Body | Bronze ASTM B584 Alloy C84400 |
| 2. Stem | Stainless Steel ASTM A 582 Alloy C30300 |
| 3. Spring | 316 Stainless Steel |
| 4. Disc Holder | Stainless Steel Type 301 |
| 5. Disc | Water, Oil or Gas (Buna-N) Steam (PTFE) (Y) |
| 6. Seat Screw | Stainless Steel ASTM A276 Alloy S43000 |
| 7. Body End | Bronze ASTM B584 Alloy C84400 |
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