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550648 — GUARD,FAN IMPELLER

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

550648: GUARD,FAN IMPELLER.

The GUARD,FAN IMPELLER is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include end_item_identification: DESIGNED FOR USE ON SPRITE,SPRITE DC FAN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-375-8316, 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
550648
NSN: 4820-00-375-8316
NIINs: 003758316, 011575471
FSC: 4820 — Valves, Nonpowered
CAGE: 59364 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - TEMPE (WEST WARNER ROAD) (USA)
SPECIFICATIONS
special_featuresGLASS REINFORCED POLYCARBONATE;RECTANGULAR PATTERN;SIX .20 IN.DIA STRIPS ON 1.26 IN.DIA CENTER OF SURFACE PLANE;3.140 IN.SQ;2.812 IN.INSIDE VENTURI; .12 IN.THK; IN
end_item_identificationDESIGNED FOR USE ON SPRITE,SPRITE DC FAN
NSN4820-00-375-8316
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 550648 · 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
•
SHOULDER HEIGHT: 0.120 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.220 INCHES NOMINAL IN
SHOULDER HEIGHT0.120 INCHES NOMINAL IN
OUTSIDE DIAMETER0.875 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
INSIDE DIAMETER0.250 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL: FIBER AND RESIN
SUBSTITUTES & CROSS-REFERENCES 6
548170PC550648Reference document
Same NSN cross-reference
Reference document — Secondary reference
4824-3113744PC550648Reference document
Same NSN cross-reference
Reference document — Secondary reference
550648PC550648Reference document
Same NSN cross-reference
Reference document — Secondary reference
547825PC550648Reference document
Same NSN cross-reference
Reference document — Secondary reference
4824-3113746PC550648Reference document
Same NSN cross-reference
Reference document — Secondary reference
4824-3130134PC550648Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 550648?
550648 is a GUARD,FAN IMPELLER.
What parts can replace 550648?
There are 6 known substitutes for 550648: 548170PC550648, 4824-3113744PC550648, 550648PC550648 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 550648?
550648 is cataloged in the U.S. Government catalog under NSN 4820-00-375-8316. 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.