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855017P0520 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

855017P0520: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include special_features: PILOT OPERATED; SAE CROSS PORTS INLINE BODY; U/O WELL WATER DRILL, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, valve_operation_method: HYDRAULIC, media_for_which_designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-360-2345, 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
855017P0520
NSN: 4820-01-360-2345
FSC: 4820 — Valves, Nonpowered
CAGE: 0CA08 — ATLAS COPCO (USA)
SPECIFICATIONS
special_featuresPILOT OPERATED; SAE CROSS PORTS INLINE BODY; U/O WELL WATER DRILL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
valve_operation_methodHYDRAULIC
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
NSN4820-01-360-2345
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 855017P0520 · 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
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
VALVE OPERATION METHOD: HYDRAULIC
TECHNICAL CHARACTERISTICS
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SPECIAL FEATURESPILOT OPERATED; SAE CROSS PORTS INLINE BODY; U/O WELL WATER DRILL
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
VALVE OPERATION METHODHYDRAULIC
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 1
RPEC-JAN-YFISame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 855017P0520?
855017P0520 is a VALVE,SAFETY RELIEF.
What parts can replace 855017P0520?
There is 1 known substitute for 855017P0520: RPEC-JAN-YFI. Substitute compatibility should be verified for your specific system.
What is the NSN for 855017P0520?
855017P0520 is cataloged in the U.S. Government catalog under NSN 4820-01-360-2345. 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.