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4378178 — VALVE,BUTTERFLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

4378178: VALVE,BUTTERFLY.

The VALVE,BUTTERFLY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, valve_size: 4.0 INCHES IN, style_designator: STRAIGHT THRU, valve_operation_method: MANUAL, part_name_assigned_by_controlling_agency: VALVE BUTTERFLY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-674-7491, 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
4378178
NSN: 4820-01-674-7491
FSC: 4820 — Valves, Nonpowered
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
valve_size4.0 INCHES IN
style_designatorSTRAIGHT THRU
valve_operation_methodMANUAL
part_name_assigned_by_controlling_agencyVALVE BUTTERFLY
NSN4820-01-674-7491
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4378178 · 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: STRAIGHT THRU
•
VALVE SIZE: 4.0 INCHES IN
•
MATERIAL: STEEL OVERALL
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTRAIGHT THRU
VALVE SIZE4.0 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYVALVE BUTTERFLY
MATERIALSTEEL OVERALL
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 1
P401131Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4378178?
4378178 is a VALVE,BUTTERFLY.
What parts can replace 4378178?
There is 1 known substitute for 4378178: P401131. Substitute compatibility should be verified for your specific system.
What is the NSN for 4378178?
4378178 is cataloged in the U.S. Government catalog under NSN 4820-01-674-7491. 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.