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X5409YL1A — REGULATOR,THERMOSTATIC TEMPERATU

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

X5409YL1A: REGULATOR,THERMOSTATIC TEMPERATU.

REGULATOR,THERMOSTATIC TEMPERATU. Key specifications include usage_design: REGULATES PRESSURE AND TEMPERATURE IN ALCO CONTROLS THERMAL EXPANSION VALVES, mounting_method: FLANGE, special_features: INTERNAL EQUALIZER, capillary_tube_length: 60.000 INCHES NOMINAL IN, end_item_identification: TICONDEROGA CLASS CG (47), part_name_assigned_by_controlling_agency: POWER ASSY.. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-450-7273, 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
X5409YL1A
NSN: 4820-01-450-7273
FSC: 4820 — Valves, Nonpowered
CAGE: 70255 — EMERSON ELECTRIC CO ALCO CONTROLS DIV (USA)
SPECIFICATIONS
usage_designREGULATES PRESSURE AND TEMPERATURE IN ALCO CONTROLS THERMAL EXPANSION VALVES
mounting_methodFLANGE
special_featuresINTERNAL EQUALIZER
capillary_tube_length60.000 INCHES NOMINAL IN
end_item_identificationTICONDEROGA CLASS CG (47)
part_name_assigned_by_controlling_agencyPOWER ASSY.
NSN4820-01-450-7273
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: X5409YL1A · 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
•
MOUNTING METHOD: FLANGE
•
CAPILLARY TUBE LENGTH: 60.000 INCHES NOMINAL IN
•
USAGE DESIGN: REGULATES PRESSURE AND TEMPERATURE IN ALCO CONTROLS THERMAL EXPANSION VALVES
TECHNICAL CHARACTERISTICS
MOUNTING METHODFLANGE
CAPILLARY TUBE LENGTH60.000 INCHES NOMINAL IN
SPECIAL FEATURESINTERNAL EQUALIZER
PART NAME ASSIGNED BY CONTROLLING AGENCYPOWER ASSY.
END ITEM IDENTIFICATIONTICONDEROGA CLASS CG (47)
USAGE DESIGNREGULATES PRESSURE AND TEMPERATURE IN ALCO CONTROLS THERMAL EXPANSION VALVES
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
X54091YL1AReference document
Same NSN cross-reference
Reference document — Secondary reference
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 X5409YL1A?
X5409YL1A is a REGULATOR,THERMOSTATIC TEMPERATU.
What parts can replace X5409YL1A?
There is 1 known substitute for X5409YL1A: X54091YL1A. Substitute compatibility should be verified for your specific system.
What is the NSN for X5409YL1A?
X5409YL1A is cataloged in the U.S. Government catalog under NSN 4820-01-450-7273. 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.