The Valve,float, cataloged under National Stock Number 4820-01-252-4576, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Clark-Reliance Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-252-4576 |
| Primary Part Number | CMS-6875 |
| Item Name | Valve,float |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Clark-Reliance Llc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Nominal Pipe Size Accommodated | 1.000 INCHES ALL ENDS IN |
| Connection Style | SOCKET ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Operating Pressure | 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Operating Pressure | 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Maximum Operating Temp | 150.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Maximum Operating Temp | 750.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Material | STEEL BODY |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| CMS-6875 PRIMARY | Clark-Reliance Llc (USA) |
| Reference | Meaning |
|---|---|
| T-2245-A | D/9 Drawing number reference only The Clark-Eliance Corp |
| 740-1IN-VALVE A | C/1 Advisory reference — outside the item-of-supply concept The Clark-Eliance Corp |
| T-2245-A-740 1INCH | 3/9 Design control — primary reference The Clark-Eliance Corp |
NSN 4820-01-252-4576 is a Valve,float, manufactured by Clark-Reliance Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-252-4576 has 1 manufacturer part number on file: CMS-6875 (Clark-Reliance Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-252-4886, 4820-01-254-5574. Verify interchangeability with system specifications before substitution.
Key specifications for CMS-6875: Flow Control Device: BALL; Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN; Connection Style: SOCKET ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.