NSN 4820-00-797-7583 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-797-7583. Manufacturer of record part number: H2372PC23.
Flange Seat to Disk End Height: 0.750 INCHES NOMINAL IN
Flange Diameter: 3.499 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
Body Outside Diameter: 2.489 INCHES MINIMUM AND 2.490 INCHES MAXIMUM IN
Style Designator: PLAIN FLANGED
Material Document and Classification: MIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE
Material Document and Classification: MIL-S-861,CLASS 405 MIL SPEC SINGLE MATERIAL RESPONSE BODY
Body Inside Diameter: 1.932 INCHES NOMINAL IN
Identification
NSN: 4820-00-797-7583
NIIN: 007977583
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: H2372PC23
Manufacturer: Siemens Energy, Inc.
General Description
The Seat,valve, cataloged under National Stock Number 4820-00-797-7583, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 12 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-00-797-7583
Primary Part Number
H2372PC23
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Siemens Energy, Inc.
Status
ACTIVE
Flange Seat to Disk End Height
0.750 INCHES NOMINAL IN
Flange Diameter
3.499 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
Body Outside Diameter
2.489 INCHES MINIMUM AND 2.490 INCHES MAXIMUM IN
Style Designator
PLAIN FLANGED
Material Document and Classification
MIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE
Material Document and Classification
MIL-S-861,CLASS 405 MIL SPEC SINGLE MATERIAL RESPONSE BODY
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-00-797-7583?
NSN 4820-00-797-7583 is a Seat,valve, manufactured by Siemens Energy, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-797-7583?
NSN 4820-00-797-7583 has 2 manufacturer part numbers on file: KJ62AJX1 (Siemens Energy, Inc.), H2372PC23 (Siemens Energy, Inc.).
What are the specifications of H2372PC23?
Key specifications for H2372PC23: Flange Seat to Disk End Height: 0.750 INCHES NOMINAL IN; Flange Diameter: 3.499 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN; Body Outside Diameter: 2.489 INCHES MINIMUM AND 2.490 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 12 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-797-7583 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.