The Seat,valve, cataloged under National Stock Number 4820-01-261-9742, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-261-9742 |
| Primary Part Number | 717252 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| Status | ACTIVE |
| Body Outside Diameter | 1.8765 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 0.375 INCHES NOMINAL IN |
| Under Flange Height | 0.250 INCHES NOMINAL IN |
| Seating Surface Shape | O-RING |
| Material Document and Classification | MIL-S-890 CLASS C MIL SPEC SINGLE MATERIAL RESPONSE SEAT |
| Style Designator | PLAIN FLANGED |
| Material | STEEL SEAT |
| Flange Diameter | 1.998 INCHES NOMINAL IN |
| Seal Accommodation Type | GROOVED |
| Body Inside Diameter | 1.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| H-8413 PIECE 181 | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| 717252 | Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA) |
| H-8413 PIECE 181 | Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (USA) |
| B-3411 | Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA) |
| H-8413 | Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA) |
| H-8413 PIECE 181 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 717252 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| H-8413 PIECE 181 | Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA) |
| 717252 | Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (USA) |
| 717252 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
NSN 4820-01-261-9742 is a Seat,valve, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-261-9742 has 10 cross-referenced part numbers: H-8413 PIECE 181 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 717252 (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture), H-8413 PIECE 181 (Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand), B-3411 (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture), H-8413 (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture) and 5 more.
There are 3 known substitutes for 4820-01-261-9742: 4530-00-391-8595, 4820-01-157-4361, 4820-01-157-4379. Verify interchangeability with system specifications before substitution.
Key specifications for 717252: Body Outside Diameter: 1.8765 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.375 INCHES NOMINAL IN; Under Flange Height: 0.250 INCHES NOMINAL IN; Seating Surface Shape: O-RING. 10 total characteristics are documented in the Federal Logistics Information System.