The Valve,globe-Check, cataloged under National Stock Number 4820-01-536-8244, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is W & O Supply Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-536-8244 |
| Primary Part Number | 21-CB2-SC-FF 2.50IN |
| Item Name | Valve,globe-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | W & O Supply Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Furnished Items and Quantity | 1 HANDWHEEL |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Bolt Circle Nominal Diameter | 5.500 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.750 INCHES ALL ENDS IN |
| Nominal Outside Diameter Tube Accommodated | 10.000 INCHES ALL ENDS IN |
| Valve Size | 2.500 INCHES IN |
| Nominal Outside Diameter | 7.000 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Face to Face Distance | 8.500 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL SEAT |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | STEEL STEM |
| Raised Face Nominal Diameter | 4.130 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| Raised Face Nominal Height | 0.083 INCHES ALL ENDS IN |
| Nominal Thickness | 0.880 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 21-CB2-SC-FF 2.50IN PRIMARY | W & O Supply Inc (USA) |
| Reference | Meaning |
|---|---|
| 21-CB2-SC-FF | D/9 Drawing number reference only Newmans Inc New Jersey Div |
NSN 4820-01-536-8244 is a Valve,globe-Check, manufactured by W & O Supply Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-536-8244 has 1 manufacturer part number on file: 21-CB2-SC-FF 2.50IN (W & O Supply Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-536-8253. Verify interchangeability with system specifications before substitution.
Key specifications for 21-CB2-SC-FF 2.50IN: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Furnished Items and Quantity: 1 HANDWHEEL; Flange Face Design: RAISED STRAIGHT ALL ENDS. 21 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.