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550412 — FLANGE,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

550412: FLANGE,VALVE.

The FLANGE,VALVE is a the manufacturer industrial component. Key specifications include material: LEATHER SEALING ELEMENT, case_style: SQUARE, seal_width: 0.562 INCHES NOMINAL IN, housing_bore_diameter: 5.501 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 4.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-003-5557, 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
550412
NSN: 4820-00-003-5557
NIINs: 000035557, 001548418
FSC: 4820 — Valves, Nonpowered
CAGE: 96736 — AEROCONTROLEX GROUP, INC. DBA AERO FLUID PRODUCTS (USA)
SPECIFICATIONS
materialLEATHER SEALING ELEMENT
case_styleSQUARE
seal_width0.562 INCHES NOMINAL IN
housing_bore_diameter5.501 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter4.625 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN4820-00-003-5557
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 550412 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: ALUMINUM ALLOY,HARD RED ANODIZED FINISH,2.375 IN. SQUARE,0.281 IN. THK,PLAIN FACE,4 MTG HOLES 0.266 IN. DIA,SPACED ON 1.812 IN. MTG CENTERS,1.312 IN. DIA HOLE THROUGH,2.017 IN. O/A LG IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONALUMINUM ALLOY,HARD RED ANODIZED FINISH,2.375 IN. SQUARE,0.281 IN. THK,PLAIN FACE,4 MTG HOLES 0.266 IN. DIA,SPACED ON 1.812 IN. MTG CENTERS,1.312 IN. DIA HOLE THROUGH,2.017 IN. O/A LG IN
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 550412?
550412 is a FLANGE,VALVE.
What is the NSN for 550412?
550412 is cataloged in the U.S. Government catalog under NSN 4820-00-003-5557. 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.