The Valve,stop-Check, cataloged under National Stock Number 4820-01-071-4649, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 19 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-071-4649 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Style | SOCKET (PIPE) FIRST END |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Supplementary Features | FLOW CONTROL DEVICE: STEM |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Style Designator | STRAIGHT THRU |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Departure From Cited Document | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 |
| Nondefinitive Spec/std Data | B1 COMPOSITION AND 1500.0 RATING AND 0.500 SIZE |
| Bonnet Attachment Method | BOLTED |
| Material | STEEL BODY |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL STEM |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| B422-1-B3L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| B422-1-B3 | 5/1 Secondary reference Hunt Valve Company, Inc. |
| S-807-12 | 5/9 Secondary reference Sfc Valve Corp |
| S-807-12 | 3/1 Design control — primary reference Sfc Valve Corporation |
| 807-1500 TY S-807-12 | 5/9 Secondary reference Sfc Valve Corp |
| 807-1501 TY S-807-12L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 33311-30 FIG W03-3084B-05TS | 5/1 Secondary reference Velan Valve Corp. |
| 807-1501 TY S-807-12 | 5/1 Secondary reference Sfc Valve Corporation |
| 807-1500 TY S-807-12 | 5/1 Secondary reference Sfc Valve Corporation |
| W03-3084B-05TS 33311-30 | 3/1 Design control — primary reference Velan Valve Corp. |
| 807-1501 TYPE S-807-12 | 5/1 Secondary reference Sfc Valve Corporation |
| 807-1501 TY S-807-12 | 5/9 Secondary reference Sfc Valve Corp |
| 807-1501 TYPE S-807-12 | 5/9 Secondary reference Sfc Valve Corp |
| S-807-12L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 33311-30 FIG W03-3084B-05TSL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-V-22094L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-V-22094 | 4/1 Identification reference U.S. Government activity |
| 807-1500 TY S-807-12L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| W03-3084B-05TS 33311-30L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4820-01-071-4649 is a Valve,stop-Check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-071-4649: Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Connection Style: SOCKET (PIPE) FIRST END; Mounting Position: HORIZONTAL OR VERTICAL; Supplementary Features: FLOW CONTROL DEVICE: STEM. 14 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.
NSN 4820-01-071-4649 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.