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PBFB-LNN — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

PBFB-LNN: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, valve_operation_method: AUTOMATIC, end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS, adjustable_pressure_range: +60.0 TO 800.0 POUNDS PER SQUARE INCH LBS, valve_discharge_flow_rate: 20.0 GALLONS PER MINUTE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-421-0039, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
PBFB-LNN
NSN: 4820-01-421-0039
FSC: 4820 — Valves, Nonpowered
CAGE: 54035 — SUN HYDRAULICS CORPORATION (USA)
SPECIFICATIONS
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
valve_operation_methodAUTOMATIC
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
adjustable_pressure_range+60.0 TO 800.0 POUNDS PER SQUARE INCH LBS
valve_discharge_flow_rate20.0 GALLONS PER MINUTE
NSN4820-01-421-0039
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: PBFB-LNN · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONNECTION TYPE: THREADED CARTRIDGE ALL ENDS
•
STYLE DESIGNATOR: SCREW-IN CARTRIDGE
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
ADJUSTABLE PRESSURE RANGE: +60.0 TO 800.0 POUNDS PER SQUARE INCH LBS
•
VALVE DISCHARGE FLOW RATE: 20.0 GALLONS PER MINUTE
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
CONNECTION TYPETHREADED CARTRIDGE ALL ENDS
STYLE DESIGNATORSCREW-IN CARTRIDGE
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
ADJUSTABLE PRESSURE RANGE+60.0 TO 800.0 POUNDS PER SQUARE INCH LBS
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
VALVE DISCHARGE FLOW RATE20.0 GALLONS PER MINUTE
VALVE OPERATION METHODAUTOMATIC
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 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PBFB-LNN?
PBFB-LNN is a VALVE,SAFETY RELIEF.
What is the NSN for PBFB-LNN?
PBFB-LNN is cataloged in the U.S. Government catalog under NSN 4820-01-421-0039. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.