The Valve,check, cataloged under National Stock Number 4820-01-626-4817, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 8 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-626-4817 |
| Primary Part Number | HMM11-2A-001-512B |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Flange Shape | ROUND ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Material Document and Classification | ASTMB148 GRC95B00 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Valve Size | 6.0 INCHES IN |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| Material | NICKEL ALLOY AND COPPER ALLOY 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 |
|---|---|
| HMM11-2A-001-512B PRIMARY | Velan Valve Corp. (USA) |
NSN 4820-01-626-4817 is a Valve,check, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-626-4817 has 1 manufacturer part number on file: HMM11-2A-001-512B (Velan Valve Corp.).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-627-5992. Verify interchangeability with system specifications before substitution.
Key specifications for HMM11-2A-001-512B: Flange Shape: ROUND ALL ENDS; Connection Type: FLANGE ALL ENDS; Style Designator: STRAIGHT THRU FLANGED ENDS; Material Document and Classification: ASTMB148 GRC95B00 ASSN STD SINGLE MATERIAL RESPONSE BODY. 8 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.