The Valve,check, cataloged under National Stock Number 4820-01-600-4263, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-600-4263 |
| Primary Part Number | M-CHS12MM-10-31927 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Renewable Seat Ring Type | PRESSED-IN |
| Connection Style | SWIVEL NUT, FLARE (TUBE) ALL ENDS |
| Minimum Operating Temp | 50.0 CELSIUS DEGC |
| Connection Type | THREADED EXTERNAL GAS FITTING ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 12.0 MILLIMETERS MM |
| Second Connection Face to Centerline Distance | 37.7 MILLIMETERS MM |
| Media for Which Designed | GAS, NATURAL SINGLE RESPONSE |
| First Connection Face to Centerline Distance | 37.7 MILLIMETERS MM |
| Material | NICKEL ALLOY 400 OVERALL |
| 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 |
|---|---|
| M-CHS12MM-10-31927 | Teesside Fluid System Technologies Ltd (GBR) |
| M-CHS12MM-10-31927 PRIMARY | Swagelok Co (USA) |
| M-CHS12MM-10-31927 | Hpf Energy Services (GBR) |
NSN 4820-01-600-4263 is a Valve,check, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-600-4263 has 3 manufacturer part numbers on file: M-CHS12MM-10-31927 (Teesside Fluid System Technologies Ltd), M-CHS12MM-10-31927 (Swagelok Co), M-CHS12MM-10-31927 (Hpf Energy Services).
Key specifications for M-CHS12MM-10-31927: Flow Control Device: POPPET; Renewable Seat Ring Type: PRESSED-IN; Connection Style: SWIVEL NUT, FLARE (TUBE) ALL ENDS; Minimum Operating Temp: 50.0 CELSIUS DEGC. 12 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.