U.S. Valve’s 51 Series medical gas check valves deliver reliable backflow prevention for hospital and healthcare gas distribution systems, helping protect equipment and prevent cross contamination. Designed without threaded connections and built with a three-piece, in-line serviceable body, these valves meet NFPA 99–2018 requirements. Engineered for high performance with minimal flow restriction, each valve features oversized ports, Type K copper tube extensions for clean installation, and is oxygen-cleaned, tested, and individually packaged for immediate, contamination-free use.
The 51 Series check valves provide dependable backflow prevention with low restriction, helping maintain system integrity, protect critical equipment, and ensure safe, contamination-free delivery of medical gases in healthcare environments.
| Specification | Range / Options |
|---|---|
| Size | 1/2"-4" |
| Total Valve Length | 15.2"-20.56" |
| Tube Material | Copper |
| Seal Material | EPDM |
| Certifications | CGA-G-4.1, MSS SP-110 |
| Body Material | Brass |
| Spring Material | 316SS |
| End Connections | Copper Tube |
| Brand | US Valve |
| Patent | 5,364,443 & US 6,098,656 |
| Type | File Name | Downloadable File |
|---|---|---|
| Brochure | 41-51-Series_Medical-Gas-Valves-2312049-1223 |
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