NSN 4820-01-325-3946 · NIIN 013253946 · Part number 591A-11ST
Superior Valve Co · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 58553
Government record, cited
NSN 4820-01-325-3946 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-325-3946. Manufacturer of record part number: 591A-11ST.
Also searched as4820-01-325-3946 ·
4820013253946 ·
NIIN 013253946 ·
01-325-3946 ·
FSC 4820 Valves, Nonpowered · CAGE 58553 · 591A-11ST
Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS
Style Designator: STRAIGHT THRU
Nominal Outside Diameter Tube Accommodated: 1.125 INCHES ALL ENDS IN
Operating Pressure: 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Maximum Operating Temp: 325.0 FAHRENHEIT SINGLE RESPONSE DEGF
Media for Which Designed: REFRIGERANT, HALOGENATED SINGLE RESPONSE
Identification
NSN: 4820-01-325-3946
NIIN: 013253946
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 591A-11ST
Manufacturer: Superior Valve Co
General Description
The Valve,ball, cataloged under National Stock Number 4820-01-325-3946, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Superior Valve Co. Government technical data includes 9 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
4820-01-325-3946
Primary Part Number
591A-11ST
Item Name
Valve,ball
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Superior Valve Co
Status
ACTIVE
Connection Style
SOCKET (TUBE) ALL ENDS
Connection Type
UNTHREADED INTERNAL TUBE ALL ENDS
Style Designator
STRAIGHT THRU
Nominal Outside Diameter Tube Accommodated
1.125 INCHES ALL ENDS IN
Operating Pressure
500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
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 4820-01-325-3946?
NSN 4820-01-325-3946 is a Valve,ball, manufactured by Superior Valve Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-325-3946?
NSN 4820-01-325-3946 has 1 manufacturer part number on file: 591A-11ST (Superior Valve Co).
What are the specifications of 591A-11ST?
Key specifications for 591A-11ST: Connection Style: SOCKET (TUBE) ALL ENDS; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS; Style Designator: STRAIGHT THRU; Nominal Outside Diameter Tube Accommodated: 1.125 INCHES ALL ENDS IN. 9 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-325-3946 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.