NSN 4820-01-455-9550 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-455-9550. Manufacturer of record part number: 83C68-8L/SPL/660PSIG.
Also searched as4820-01-455-9550 ·
4820014559550 ·
NIIN 014559550 ·
01-455-9550 ·
FSC 4820 Valves, Nonpowered · CAGE 01343 · 83C68-8L/SPL/660PSIG
Nominal Pipe Size Accommodated: 0.750 INCHES SECOND END IN
Nominal Pipe Size Accommodated: 1.000 INCHES FIRST END IN
Connection Style: SOCKET ALL ENDS
Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS
Style Designator: ANGLE
Operating Pressure: 660.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Material: STEEL BODY
Identification
NSN: 4820-01-455-9550
NIIN: 014559550
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 83C68-8L/SPL/660PSIG
Manufacturer: Anderson Greenwood Lp Dba Anderson Greenwood Crosby
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-455-9550, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 10 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-455-9550
Primary Part Number
83C68-8L/SPL/660PSIG
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Status
ACTIVE
Nominal Pipe Size Accommodated
0.750 INCHES SECOND END IN
Nominal Pipe Size Accommodated
1.000 INCHES FIRST END IN
Connection Style
SOCKET ALL ENDS
Connection Type
UNTHREADED INTERNAL PIPE ALL ENDS
Style Designator
ANGLE
Operating Pressure
660.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
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
Related Parts in Valves
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
8171E-1/4HS2
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
D559A3M2
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 4820-01-455-9550?
NSN 4820-01-455-9550 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-455-9550?
NSN 4820-01-455-9550 has 1 manufacturer part number on file: 83C68-8L/SPL/660PSIG (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
What are the specifications of 83C68-8L/SPL/660PSIG?
Key specifications for 83C68-8L/SPL/660PSIG: Nominal Pipe Size Accommodated: 0.750 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 1.000 INCHES FIRST END IN; Connection Style: SOCKET ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 10 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-455-9550 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.