The Nub,valve, cataloged under National Stock Number 4310-01-021-1790, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Siemens Energy, Inc. Dba Dresser-Rand. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-021-1790 |
| Primary Part Number | 7444B |
| Item Name | Nub,valve |
| FSC / FSG | 4310 / 43 — No Item Name Available |
| Manufacturer | Siemens Energy, Inc. Dba Dresser-Rand |
| Status | ACTIVE |
| General Characteristics Item Description | BLACK HARD PLASTIC;0.432 IN.O/A DIA;0.315 IN.LG;14 DEG TAPERS;CORNER BREAK 45 DEG BY 0.015 IN. DP IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 7444B | Siemens Energy, Inc. Dba Dresser-Rand (USA) |
| 200136UPC98 | Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA) |
| 200136U | Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA) |
| 7444B | Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA) |
| 7444B | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
NSN 4310-01-021-1790 is a Nub,valve, manufactured by Siemens Energy, Inc. Dba Dresser-Rand, classified under FSC 4310 (No Item Name Available). Status: active.
NSN 4310-01-021-1790 has 5 cross-referenced part numbers: 7444B (Siemens Energy, Inc. Dba Dresser-Rand), 200136UPC98 (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), 200136U (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), 7444B (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), 7444B (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions).
There are 12 known substitutes for 4310-01-021-1790: 5999-00-400-3286, 4310-01-057-7115, 4310-01-060-6908 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 7444B: General Characteristics Item Description: BLACK HARD PLASTIC;0.432 IN.O/A DIA;0.315 IN.LG;14 DEG TAPERS;CORNER BREAK 45 DEG BY 0.015 IN. DP IN; End Item Identification: WORTHINGTON NON-LUBE AIR COMPRESSOR 13NL45 AND 20NL30. 2 total characteristics are documented in the Federal Logistics Information System.