The Seat,valve, cataloged under National Stock Number 4820-00-389-7097, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 18 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-389-7097 |
| Primary Part Number | CS4620-SR-0700 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| Thread Length | 0.375 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | PLAIN THREADED |
| Body Inside Diameter | 0.938 INCHES NOMINAL IN |
| Nominal Thread Size | 1.250 INCHES SINGLE THREADED PORTION IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Material | COPPER OVERALL |
| Thread Series Designator | UNF SINGLE THREADED PORTION |
| Seating Surface Shape | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| CS4620-SR-0700 | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| E100-12PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE1800-18PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE1895-11PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| 2000019 | 3/9 Design control — primary reference Ecolaire Heat Transfer Co Div of Ecolaire Inc |
| NYE1990-10PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE2135-16PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| EE5-12PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE2255-17PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| EE1-11PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE2200-15PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| EE2-11PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| EE4-12PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE1895-11APC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE2175-11-29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE2125-16PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE3715-11PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE1950-25PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
| NYE2115-16PC29 | 5/9 Secondary reference Ecolaire Inc Baldwin-Hamilton Co Div |
NSN 4820-00-389-7097 is a Seat,valve, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-389-7097 has 1 manufacturer part number on file: CS4620-SR-0700 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
2 possible matches (shared part number, not a government interchangeability claim): 5315-00-819-3018, 6540-01-526-0956. Verify interchangeability with system specifications before substitution.
Key specifications for CS4620-SR-0700: Overall Height: 0.688 INCHES NOMINAL IN; Thread Length: 0.375 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: PLAIN THREADED; Body Inside Diameter: 0.938 INCHES NOMINAL IN. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.