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Technical Data Sheet
PartsTable / COMPONENT / 055959ITEM5
055959ITEM5 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304, outside_diameter: 4.375 INCHES NOMINAL IN, special_features: NHA: 4820-01-141-5054; VALVE, STOP-CHECK, style_designator: POPPET, end_item_identification: NUCLEAR REACTOR BOUNDRY AREA., part_name_assigned_by_controlling_agency: DISC ASSEMBLY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-540-3000, 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
055959ITEM5
NSN: 4820-01-540-3000
FSC: 4820
CAGE: 48422 — WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 304
outside_diameter4.375 INCHES NOMINAL IN
special_featuresNHA: 4820-01-141-5054; VALVE, STOP-CHECK
style_designatorPOPPET
end_item_identificationNUCLEAR REACTOR BOUNDRY AREA.
part_name_assigned_by_controlling_agencyDISC ASSEMBLY
NSN4820-01-540-3000
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 055959ITEM5 · 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
•
STYLE DESIGNATOR: POPPET
•
OUTSIDE DIAMETER: 4.375 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 304
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORPOPPET
PART NAME ASSIGNED BY CONTROLLING AGENCYDISC ASSEMBLY
OUTSIDE DIAMETER4.375 INCHES NOMINAL IN
MATERIALSTEEL COMP 304
SPECIAL FEATURESNHA: 4820-01-141-5054; VALVE, STOP-CHECK
END ITEM IDENTIFICATIONNUCLEAR REACTOR BOUNDRY AREA.
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
G210722-4Interchangeable
interchangeable cross-reference
interchangeable
D9578-1-27Interchangeable
interchangeable cross-reference
interchangeable
121574Interchangeable
interchangeable cross-reference
interchangeable
5573538Interchangeable
interchangeable cross-reference
interchangeable
131574Interchangeable
interchangeable cross-reference
interchangeable
16TX609Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 055959ITEM5?
055959ITEM5 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 055959ITEM5?
There are 6 known substitutes for 055959ITEM5: G210722-4, D9578-1-27, 121574 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 055959ITEM5?
055959ITEM5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-540-3000. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026