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4912K54 — VALVE,BALL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

4912K54: VALVE,BALL.

The VALVE,BALL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, valve_size: 0.500 INCHES IN, surface_treatment: CHROMATE, operating_pressure: 450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, face_to_face_distance: 2.125 INCHES IN, maximum_operating_temp: 200.0 FAHRENHEIT SINGLE RESPONSE DEGF. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-645-0997, 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
4912K54
NSN: 4820-01-645-0997
FSC: 4820 — Valves, Nonpowered
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
valve_size0.500 INCHES IN
surface_treatmentCHROMATE
operating_pressure450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
face_to_face_distance2.125 INCHES IN
maximum_operating_temp200.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodMANUAL
end_item_identification5419-01-539-7177; EXPED TR SYS
part_name_assigned_by_controlling_agencyMINIATURE CHROME-PLATED BRASS BALL VALVE
NSN4820-01-645-0997
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4912K54 · 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: 450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
VALVE SIZE: 0.500 INCHES IN
•
MAXIMUM OPERATING TEMP: 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
SURFACE TREATMENT: CHROMATE
•
FACE TO FACE DISTANCE: 2.125 INCHES IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
OPERATING PRESSURE450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VALVE SIZE0.500 INCHES IN
MAXIMUM OPERATING TEMP200.0 FAHRENHEIT SINGLE RESPONSE DEGF
SURFACE TREATMENTCHROMATE
FACE TO FACE DISTANCE2.125 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYMINIATURE CHROME-PLATED BRASS BALL VALVE
END ITEM IDENTIFICATION5419-01-539-7177; EXPED TR SYS
MATERIALCOPPER ALLOY OVERALL
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE SEAT
VALVE OPERATION METHODMANUAL
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 4912K54?
4912K54 is a VALVE,BALL.
What is the NSN for 4912K54?
4912K54 is cataloged in the U.S. Government catalog under NSN 4820-01-645-0997. 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.