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Technical Data Sheet
PartsTable / COMPONENT / 550400
550400 ✓ 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: PLASTIC AND STEEL CORROSION RESISTING, special_features: BLUE PROTRACTION FACEMASK; LIGHT-WEIGHT; FULLY ADJUSTABLE; TWO REPLACEMENT PADS; HEXAGON KEY INCLUDED, part_name_assigned_by_controlling_agency: CONSTANT FORCE HEADGEAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-147-6517, 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
550400
NSN: 4820-00-147-6517
FSC: 4820
CAGE: 96736 — AEROCONTROLEX GROUP, INC. DBA AERO FLUID PRODUCTS (USA)
SPECIFICATIONS
materialPLASTIC AND STEEL CORROSION RESISTING
special_featuresBLUE PROTRACTION FACEMASK; LIGHT-WEIGHT; FULLY ADJUSTABLE; TWO REPLACEMENT PADS; HEXAGON KEY INCLUDED
part_name_assigned_by_controlling_agencyCONSTANT FORCE HEADGEAR
NSN4820-00-147-6517
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 550400 · 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
•
DISK LOADING METHOD: SPRING
•
VALVE OPERATION METHOD: AUTOMATIC
•
FLANGE SHAPE: RECTANGULAR WITH HOLES SECOND END
•
FLANGE FACE DESIGN: PLAIN SECOND END
•
SURFACE TREATMENT: ANODIZE
•
NOMINAL THICKNESS: 0.281 INCHES SECOND END IN
•
STYLE DESIGNATOR: STRAIGHT THRU
•
CENTER TO CENTER NOMINAL DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 1.812 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
DISK LOADING METHODSPRING
VALVE OPERATION METHODAUTOMATIC
FLANGE SHAPERECTANGULAR WITH HOLES SECOND END
FLANGE FACE DESIGNPLAIN SECOND END
SURFACE TREATMENTANODIZE
NOMINAL THICKNESS0.281 INCHES SECOND END IN
STYLE DESIGNATORSTRAIGHT THRU
CENTER TO CENTER NOMINAL DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.812 INCHES SECOND END IN
CENTER TO CENTER NOMINAL DISTANCE BETWEEN BOLT HOLES ALONG WIDTH1.812 INCHES SECOND END IN
BOLT HOLE NOMINAL DIAMETER0.250 INCHES SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
919599Interchangeable
interchangeable cross-reference
interchangeable
2AE310Interchangeable
interchangeable cross-reference
interchangeable
0635501051Interchangeable
interchangeable cross-reference
interchangeable
358964-1Interchangeable
interchangeable cross-reference
interchangeable
550400Interchangeable
interchangeable cross-reference
interchangeable
6-52934-9Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 550400?
550400 is a BEARING,BALL,ANNULAR.
What parts can replace 550400?
There are 6 known substitutes for 550400: 919599, 2AE310, 0635501051 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 550400?
550400 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-147-6517. 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