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Technical Data Sheet

AAE21/2HCA — VALVE,EXPANSION

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

AAE21/2HCA: VALVE,EXPANSION.

The VALVE,EXPANSION is a the manufacturer industrial component. Key specifications include material: STEEL BODY, body_style: STRAIGHT THRU, face_to_face_distance: 3.4844 INCHES NOMINAL IN, end_item_identification: SHELTER, NONEXPANDABLE, LIGHTWEIGHT, MULTIPURPOSE / S-832/G, valve_equalizer_location: EXTERNAL, valve_expansion_control_type: THERMOSTATIC. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-493-7740, 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
AAE21/2HCA
NSN: 4820-01-493-7740
FSC: 4820 — Valves, Nonpowered
CAGE: 70255 — EMERSON ELECTRIC CO ALCO CONTROLS DIV (USA)
SPECIFICATIONS
materialSTEEL BODY
body_styleSTRAIGHT THRU
face_to_face_distance3.4844 INCHES NOMINAL IN
end_connection_quantity2
end_item_identificationSHELTER, NONEXPANDABLE, LIGHTWEIGHT, MULTIPURPOSE / S-832/G
valve_equalizer_locationEXTERNAL
valve_expansion_control_typeTHERMOSTATIC
refrigeration_capacity_in_btu_per_hour30.0
valve_evaporator_temp_range_designationHIGH
NSN4820-01-493-7740
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: AAE21/2HCA · 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
•
VALVE EQUALIZER LOCATION: EXTERNAL
•
BODY STYLE: STRAIGHT THRU
•
FACE TO FACE DISTANCE: 3.4844 INCHES NOMINAL IN
•
REFRIGERATION CAPACITY IN BTU PER HOUR: 30.0
•
END CONNECTION QUANTITY: 2
•
VALVE EVAPORATOR TEMP RANGE DESIGNATION: HIGH
•
MATERIAL: STEEL BODY
TECHNICAL CHARACTERISTICS
VALVE EQUALIZER LOCATIONEXTERNAL
BODY STYLESTRAIGHT THRU
FACE TO FACE DISTANCE3.4844 INCHES NOMINAL IN
REFRIGERATION CAPACITY IN BTU PER HOUR30.0
END CONNECTION QUANTITY2
VALVE EVAPORATOR TEMP RANGE DESIGNATIONHIGH
END ITEM IDENTIFICATIONSHELTER, NONEXPANDABLE, LIGHTWEIGHT, MULTIPURPOSE / S-832/G
MATERIALSTEEL BODY
VALVE EXPANSION CONTROL TYPETHERMOSTATIC
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AAE21/2HCA?
AAE21/2HCA is a VALVE,EXPANSION.
What is the NSN for AAE21/2HCA?
AAE21/2HCA is cataloged in the U.S. Government catalog under NSN 4820-01-493-7740. 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.