Maximum Operating Temp: 400.0 FAHRENHEIT SINGLE RESPONSE DEGF
Identification
NSN: 4820-01-503-1513
NIIN: 015031513
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-503-1513, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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
4820-01-503-1513
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Flow Control Device
POPPET
Furnished Items and Quantity
1 DEFLECTOR CAP
Connection Style
PLAIN (PIPE) FIRST END
Minimum Operating Temp
-20.0 FAHRENHEIT DEGF
Connection Type
THREADED EXTERNAL PIPE FIRST END
Style Designator
STRAIGHT THRU W/BAFFLE
Maximum Operating Temp
400.0 FAHRENHEIT SINGLE RESPONSE DEGF
Material
COPPER ALLOY BODY
Opening Pressure Setting
3.5 POUNDS PER SQUARE INCH LBS
Valve Operation Method
AUTOMATIC
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
D532B-4M-3.5
3/2Design control — primary reference
U.S. Government activity
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 4820-01-503-1513?
NSN 4820-01-503-1513 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
What are the specifications of 4820-01-503-1513?
Key specifications for 4820-01-503-1513: Flow Control Device: POPPET; Furnished Items and Quantity: 1 DEFLECTOR CAP; Connection Style: PLAIN (PIPE) FIRST END; Minimum Operating Temp: -20.0 FAHRENHEIT DEGF. 10 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-503-1513 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.