NSN 4820-01-659-3570 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-659-3570. Manufacturer of record part number: RDBA-LWN/AP.
Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Surface Treatment: PASSIVATE LOCATION NOT OTHERWISE SPECIFIED
Material: STEEL STAINLESS - USE STB000 OVERALL
Valve Discharge Flow Rate: 12.0 GALLONS PER MINUTE
2 manufacturer part numbers on file
Manufacturer of record: Sun Hydraulics Corporation
Identification
NSN: 4820-01-659-3570
NIIN: 016593570
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: RDBA-LWN/AP
Manufacturer: Sun Hydraulics Corporation
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-659-3570, 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 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-659-3570
Primary Part Number
RDBA-LWN/AP
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Sun Hydraulics Corporation
Status
ACTIVE
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 4820-01-659-3570?
NSN 4820-01-659-3570 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 4820-01-659-3570?
NSN 4820-01-659-3570 has 2 manufacturer part numbers on file: 91984765 (Thales Sa), RDBA-LWN/AP (Sun Hydraulics Corporation).
What are the specifications of RDBA-LWN/AP?
Key specifications for RDBA-LWN/AP: Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Special Features: VALVE HEX SIZE 3/4 INCH;LOCKNUT HEX SIZE 1/2 INCH;SEAL IS BUNA-N;STANDARD SCREW ADJUSTMENT;MODEL WEIGHT 0.22 LB LBS; Surface Treatment: PASSIVATE LOCATION NOT OTHERWISE SPECIFIED; Part Name Assigned by Controlling Agency: DIRECT-ACTING RELIEF VALVE. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-659-3570 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.