NSN 4820-01-215-4207 · NIIN 012154207 · Part number 20020 R51SS
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 15187
Government record, cited
NSN 4820-01-215-4207 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-215-4207. Manufacturer of record part number: 20020 R51SS.
Operating Pressure: 180.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
1 manufacturer part number on file
Manufacturer of record: Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Identification
NSN: 4820-01-215-4207
NIIN: 012154207
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 20020 R51SS
Manufacturer: Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-215-4207, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-215-4207
Primary Part Number
20020 R51SS
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Status
ACTIVE
Operating Pressure
180.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
Reference documents
Reference
Meaning
20020 R51SS
5/9Secondary reference
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
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 4820-01-215-4207?
NSN 4820-01-215-4207 is a Valve,safety Relief, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-215-4207?
NSN 4820-01-215-4207 has 1 manufacturer part number on file: 20020 R51SS (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
What are the specifications of 20020 R51SS?
Key specifications for 20020 R51SS: Operating Pressure: 180.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-215-4207 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.