The Valve,check, cataloged under National Stock Number 4820-01-655-3253, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell Enraf Americas Inc Dba Honeywell Enraf Americas Inc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-655-3253 |
| Primary Part Number | SS-6CA-MM-3 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell Enraf Americas Inc Dba Honeywell Enraf Americas Inc |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | SWIVEL, PLAIN (TUBE) ALL ENDS |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 6.00 MILLIMETERS ALL ENDS MM |
| Valve Size | 6.00 MILLIMETERS MM |
| Face to Face Distance | 3.23 INCHES IN |
| Material | STEEL COMP 316 BODY |
| Opening Pressure Setting | 3.00 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| SS-6CA-MM-3 PRIMARY | Honeywell Enraf Americas Inc Dba Honeywell Enraf Americas Inc (USA) |
| SS-6CA-MM-3 PRIMARY | Swagelok Co (USA) |
NSN 4820-01-655-3253 is a Valve,check, manufactured by Honeywell Enraf Americas Inc Dba Honeywell Enraf Americas Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-655-3253 has 2 manufacturer part numbers on file: SS-6CA-MM-3 (Honeywell Enraf Americas Inc Dba Honeywell Enraf Americas Inc), SS-6CA-MM-3 (Swagelok Co).
Key specifications for SS-6CA-MM-3: Flow Control Device: POPPET; Connection Style: SWIVEL, PLAIN (TUBE) ALL ENDS; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS; Style Designator: STRAIGHT THRU. 10 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.