NSN 4820-01-535-1973 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-535-1973. Manufacturer of record part number: PRDB-LBN.
Also searched as4820-01-535-1973 ·
4820015351973 ·
NIIN 015351973 ·
01-535-1973 ·
FSC 4820 Valves, Nonpowered · CAGE 54035 · PRDB-LBN
Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Adjustable Pressure Range: +50.0 TO 1500.0 POUNDS PER SQUARE INCH LBS
Mounting Facility: THREADED FASTENER
Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT
Valve Operation Method: MANUAL
Identification
NSN: 4820-01-535-1973
NIIN: 015351973
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: PRDB-LBN
Manufacturer: Sun Hydraulics Corporation
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-535-1973, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sun Hydraulics Corporation. Government technical data includes 7 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
4820-01-535-1973
Primary Part Number
PRDB-LBN
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Sun Hydraulics Corporation
Status
ACTIVE
Flow Control Device
SPOOL
Style Designator
SCREW-IN CARTRIDGE
Operating Pressure
5000.0 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 4820-01-535-1973?
NSN 4820-01-535-1973 is a Valve,safety Relief, manufactured by Sun Hydraulics Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-535-1973?
NSN 4820-01-535-1973 has 1 manufacturer part number on file: PRDB-LBN (Sun Hydraulics Corporation).
What are the specifications of PRDB-LBN?
Key specifications for PRDB-LBN: Flow Control Device: SPOOL; Style Designator: SCREW-IN CARTRIDGE; Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Adjustable Pressure Range: +50.0 TO 1500.0 POUNDS PER SQUARE INCH LBS. 7 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-535-1973 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.