The Valve,stop-Check, cataloged under National Stock Number 4820-00-181-9450, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sfc Valve Corporation. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-181-9450 |
| Primary Part Number | S807-18/807-1800NO REV/8820395 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sfc Valve Corporation |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Nominal Pipe Size Accommodated | 1.000 INCHES ALL ENDS IN |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | MIL-R-17131,MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | MIL-R-17131,MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | ASTM A105, GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | BONNET PACKING |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Specification/standard Data | 81349-MIL-V-22094 GOVERNMENT SPECIFICATION |
| Maximum Operating Temp | 775.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nondefinitive Spec/std Data | D COMPOSITION |
| Disk Loading Method | WEIGHT |
| Bonnet Attachment Method | BOLTED |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Test Data Document | 81349-MIL-S-901 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL BODY |
| Material | STEEL SEAT |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | STEEL COMP 410 STEM |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| S807-18/807-1800NO REV/8820395 PRIMARY | Sfc Valve Corporation (USA) |
| W053084B02TS/33311-30H/882033650 PRIMARY | Velan Valve Corp. (USA) |
| S807-1800 PRIMARY | Sfc Valve Corporation (USA) |
| Reference | Meaning |
|---|---|
| S807-18/807-1800NO REV/8820385 | 5/1 Secondary reference Sfc Valve Corporation |
| 807-1800 ASSEMBLY S807-18 | 5/1 Secondary reference Sfc Valve Corporation |
| MILV22094 | 4/1 Identification reference U.S. Government activity |
NSN 4820-00-181-9450 is a Valve,stop-Check, manufactured by Sfc Valve Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-181-9450 has 3 manufacturer part numbers on file: S807-18/807-1800NO REV/8820395 (Sfc Valve Corporation), W053084B02TS/33311-30H/882033650 (Velan Valve Corp.), S807-1800 (Sfc Valve Corporation).
Key specifications for S807-18/807-1800NO REV/8820395: Flow Control Device: DISK; Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN; Connection Style: SOCKET (PIPE) ALL ENDS; Mounting Position: HORIZONTAL. 25 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.