The Valve,gate, cataloged under National Stock Number 4820-00-873-3585, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Crane Co Div Valve Div. Government technical data includes 19 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-873-3585 |
| Primary Part Number | 431UB-1/2 |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Maximum Operating Temp and Media for Which Designed | 365.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF |
| Operating Pressure and Type | 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Stem Type | RISING |
| Connection Type | THREADED INTERNAL PIPE |
| Material Document and Classification | ASTMCUB000 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTMCUB000 ASSN STD SINGLE MATERIAL RESPONSE DISK |
| Material Document and Classification | ASTMCUB000 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Valve Size | 0.500 INCHES IN |
| Features Provided | BONNET PACKING |
| Bonnet Type | INSIDE SCREW |
| Nominal Thread Size | 0.500 INCHES IN |
| Bonnet Attachment Method | THREADED |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY STEM |
| Material | COPPER ALLOY DISK |
| Material | COPPER ALLOY SEAT |
| Thread Series Designator | NPT |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 7HD95 | Oshkosh Defense Llc (USA) |
| 431UB-1/2 PRIMARY | Crane Co Div Valve Div (USA) |
| Reference | Meaning |
|---|---|
| IB629-1/2 | 5/9 Secondary reference Hammond Valve Corp |
| 7HD95 | 5/9 Secondary reference Oshkosh Corp |
| WWV54 | 4/1 Identification reference U.S. Government activity |
| T-134-1/2 | 5/9 Secondary reference Nibco Inc |
| 1B629-1/2 | C/1 Advisory reference — outside the item-of-supply concept Hammond Valve Corp |
NSN 4820-00-873-3585 is a Valve,gate, manufactured by Crane Co Div Valve Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-873-3585 has 2 manufacturer part numbers on file: 7HD95 (Oshkosh Defense Llc), 431UB-1/2 (Crane Co Div Valve Div).
1 possible match (shared part number, not a government interchangeability claim): 4940-01-327-3035. Verify interchangeability with system specifications before substitution.
Key specifications for 431UB-1/2: Inlet Relationship with Outlet: IDENTICAL; Maximum Operating Temp and Media for Which Designed: 365.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF; Operating Pressure and Type: 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS; Stem Type: RISING. 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.