The Seat,valve, cataloged under National Stock Number 4820-01-274-8418, 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 Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-274-8418 |
| Primary Part Number | NL1188-1 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | CANCELLED |
| Seating Surface Shape | FLAT |
| Style Designator | PLAIN |
| Surface Treatment | CHROMIUM OVERALL |
| Material | NICKEL ALLOY OVERALL |
| Body Inside Diameter | 10.250 INCHES NOMINAL IN |
| Body Outside Diameter | 12.260 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 73683 | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
| NL1188-1 | Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA) |
| NL1188-1 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 73684 | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
| NL1188 | Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA) |
| 73683 ITEM 3 | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
| NL1188-1 | Dresser-Rand Company (USA) |
NSN 4820-01-274-8418 is a Seat,valve, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-01-274-8418 has 7 cross-referenced part numbers: 73683 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), NL1188-1 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp), NL1188-1 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 73684 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), NL1188 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp) and 2 more.
There are 9 known substitutes for 4820-01-274-8418: 5306-00-077-1775, 1680-00-332-7879, 6145-00-481-1953 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for NL1188-1: Seating Surface Shape: FLAT; Style Designator: PLAIN; Surface Treatment: CHROMIUM OVERALL; Material: NICKEL ALLOY OVERALL. 7 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-01-274-8418 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.