The Union,pipe, cataloged under National Stock Number 4730-00-189-2635, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-189-2635 |
| Primary Part Number | B16.39 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | CANCELLED |
| Seat Type | GROUND-JOINT |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 2.110 INCHES IN |
| Thread Series Designator | NPT ALL ENDS |
| Nominal Overall Length | 2.110 INCHES IN |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Material | STEEL OR IRON BODY |
| Coupling Flange Shape | HEXAGON |
| Specification/standard Data | 81349-MIL-U-18250 GOVERNMENT SPECIFICATION |
| Style Designator | SCREWED |
| Reducer Type | CONCENTRIC |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Coupling Flange Shape | HEXAGON |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Material Document and Classification | QQ-S-633 OR QQ-I-666 OR ASTM 1-197 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-S-633 OR QQ-I-666 OR ASTM 1-197 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Nondefinitive Spec/std Data | XB TYPE |
| Material | COPPER ALLOY SEAT |
| Maximum Operating Temp | 218.3 CELSIUS SINGLE RESPONSE DEGC |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Style Designator | SCREWED |
| Nondefinitive Spec/std Data | XB TYPE |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Surface Treatment | ZINC OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Seat Type | GROUND-JOINT |
| Specification/standard Data | 81349-MIL-U-18250 GOVERNMENT SPECIFICATION |
| Material | COPPER ALLOY SEAT |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B16.39 | The American Society of Mechanical Engineers (USA) |
| 198E-3/4IN | Crane Co Div Valve Div (USA) |
| MIL-U-18250 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| B16.39 | American National Standards Institute Incorporated Dba American National Standards Institute (USA) |
NSN 4730-00-189-2635 is a Union,pipe, manufactured by The American Society of Mechanical Engineers, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-189-2635 has 4 cross-referenced part numbers: B16.39 (The American Society of Mechanical Engineers), 198E-3/4IN (Crane Co Div Valve Div), MIL-U-18250 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), B16.39 (American National Standards Institute Incorporated Dba American National Standards Institute).
There are 12 known substitutes for 4730-00-189-2635: 4730-00-189-2598, 4730-00-189-2599, 4730-00-189-2600 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for B16.39: Seat Type: GROUND-JOINT; Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 2.110 INCHES IN; Thread Series Designator: NPT ALL ENDS. 30 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-189-2635 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.