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125546B — VALVE,BUTTERFLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

125546B: VALVE,BUTTERFLY.

The VALVE,BUTTERFLY is a the manufacturer industrial component. Key specifications include valve_size: 4.000 INCHES IN, special_features: APPLICATION AND FIT, fsc_application_data: BODY ASSEMBLY-VALVE,FUEL SHUTOFF,4 INCHES BUTTERFLY;ROCKWELL PROCUREMENT SPEC L284C2074-1;T.O.1B-1B-4-28 IN, end_item_identification: B-1B AIRCRAFT FUEL SYSTEM, criticality_code_justification: FEAT, nuclear_hardness_critical_feature: HARDENED. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-180-6085, 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
125546B
NSN: 4810-01-180-6085
FSC: 4810 — Valves, Powered
CAGE: 73760 — ITT AEROSPACE CONTROLS LLC DBA ITT AEROSPACE CONTROLS UNIT S (USA)
SPECIFICATIONS
valve_size4.000 INCHES IN
special_featuresAPPLICATION AND FIT
fsc_application_dataBODY ASSEMBLY-VALVE,FUEL SHUTOFF,4 INCHES BUTTERFLY;ROCKWELL PROCUREMENT SPEC L284C2074-1;T.O.1B-1B-4-28 IN
end_item_identificationB-1B AIRCRAFT FUEL SYSTEM
criticality_code_justificationFEAT
nuclear_hardness_critical_featureHARDENED
NSN4810-01-180-6085
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 125546B · 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
•
FSC APPLICATION DATA: BODY ASSEMBLY-VALVE,FUEL SHUTOFF,4 INCHES BUTTERFLY;ROCKWELL PROCUREMENT SPEC L284C2074-1;T.O.1B-1B-4-28 IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
VALVE SIZE: 4.000 INCHES IN
•
NUCLEAR HARDNESS CRITICAL FEATURE: HARDENED
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATABODY ASSEMBLY-VALVE,FUEL SHUTOFF,4 INCHES BUTTERFLY;ROCKWELL PROCUREMENT SPEC L284C2074-1;T.O.1B-1B-4-28 IN
CRITICALITY CODE JUSTIFICATIONFEAT
VALVE SIZE4.000 INCHES IN
SPECIAL FEATURESAPPLICATION AND FIT
END ITEM IDENTIFICATIONB-1B AIRCRAFT FUEL SYSTEM
NUCLEAR HARDNESS CRITICAL FEATUREHARDENED
OTHER ITEMS IN FSC 4810 — Valves, Powered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4810-00-001-1247 4810-00-001-4499 4810-00-001-4531 4810-00-001-4532 4810-00-001-4554 4810-00-001-4555 4810-00-001-4556 4810-00-001-4611
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required — mutilation + specific procedure
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FREQUENTLY ASKED QUESTIONS
What is 125546B?
125546B is a VALVE,BUTTERFLY.
What is the NSN for 125546B?
125546B is cataloged in the U.S. Government catalog under NSN 4810-01-180-6085. 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.