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Technical Data Sheet

AA 1/2 MC — VALVE,EXPANSION

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

AA 1/2 MC: VALVE,EXPANSION.

The VALVE,EXPANSION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, body_style: ANGLE GIVE "ADQN" IF FLANGED ENDS, special_features: NHA REFRIGERATOR; NAV-65-HT-B, flow_control_device: STEM AND INTEGRAL DISK, end_item_identification: NIMITZ CLASS CVN, valve_equalizer_location: INTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-455-6941, 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
AA 1/2 MC
NSN: 4820-01-455-6941
NIINs: 014556941, 014689891
FSC: 4820 — Valves, Nonpowered
CAGE: 14569 — COPELAND CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
body_styleANGLE GIVE "ADQN" IF FLANGED ENDS
special_featuresNHA REFRIGERATOR; NAV-65-HT-B
flow_control_deviceSTEM AND INTEGRAL DISK
end_connection_quantity2
end_item_identificationNIMITZ CLASS CVN
valve_equalizer_locationINTERNAL
first_end_connection_typeBUTT WELD TUBE
first_end_style_designatorBEVELED
valve_expansion_control_typeTHERMOSTATIC
valve_pressure_limiting_deviceNOT INCLUDED
second_end_relationship_with_first_endIDENTICAL
NSN4820-01-455-6941
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: AA 1/2 MC · 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
•
FLOW CONTROL DEVICE: STEM AND INTEGRAL DISK
•
VALVE EQUALIZER LOCATION: INTERNAL
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
BODY STYLE: ANGLE GIVE "ADQN" IF FLANGED ENDS
•
FIRST END STYLE DESIGNATOR: BEVELED
•
END CONNECTION QUANTITY: 2
•
SECOND CONNECTION FACE TO CENTERLINE DISTANCE: 0.750 INCHES NOMINAL IN
•
FIRST END CONNECTION TYPE: BUTT WELD TUBE
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICESTEM AND INTEGRAL DISK
VALVE EQUALIZER LOCATIONINTERNAL
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
BODY STYLEANGLE GIVE "ADQN" IF FLANGED ENDS
FIRST END STYLE DESIGNATORBEVELED
END CONNECTION QUANTITY2
SECOND CONNECTION FACE TO CENTERLINE DISTANCE0.750 INCHES NOMINAL IN
FIRST END CONNECTION TYPEBUTT WELD TUBE
VALVE EVAPORATOR TEMP RANGE DESIGNATIONLOW
FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES NOMINAL 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 AA 1/2 MC?
AA 1/2 MC is a VALVE,EXPANSION.
What is the NSN for AA 1/2 MC?
AA 1/2 MC is cataloged in the U.S. Government catalog under NSN 4820-01-455-6941. This indicates validated use in U.S. government and defense supply chains.
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