The Valve,gate, cataloged under National Stock Number 4820-01-420-7955, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-420-7955 |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Flange Face Design | RECESSED |
| Stem Type | NONRISING |
| Connection Type | FLANGE, ROUND W/HOLES |
| Material Document and Classification | ASTM-B62 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-B-281,CL.A FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | QQ-N-288,COMP.A FED SPEC SINGLE MATERIAL RESPONSE DISK |
| Material Document and Classification | QQ-N-288,COMP.B FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Valve Size | 2.500 INCHES IN |
| Features Provided | BONNET PACKING |
| Bonnet Type | PACKING RETAINING |
| Bolt Hole Quantity | 4 |
| Flange Diameter | 4.938 INCHES IN |
| Bonnet Attachment Method | BOLTED |
| Face to Face Distance | 7.500 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY SEAT |
| Material | NICKEL ALLOY DISK |
| Material | NICKEL ALLOY 400 STEM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2.5 IN. 224-3 | 3/9 Design control — primary reference Pima Valve, Llc |
| 224-3 | D/9 Drawing number reference only Pima Valve, Llc |
| 2.5 IN. 224-3 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| 2.5 IN. B1025E | 5/9 Secondary reference Key Industries Inc Dba Liberty Equipment and Supply Co |
| 2.5 IN. B1025E | 5/1 Secondary reference Pima Valve, Llc |
NSN 4820-01-420-7955 is a Valve,gate, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-420-7955: Inlet Relationship with Outlet: IDENTICAL; Flange Face Design: RECESSED; Stem Type: NONRISING; Connection Type: FLANGE, ROUND W/HOLES. 19 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.