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Technical Data Sheet
B321C ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The COMPRESSOR UNIT,RECIPROCATING is a the manufacturer industrial component. Key specifications include phase: THREE, mounting_type: HORIZONTAL TANK, silencer_type: INLET, unloader_type: AUTOMATIC, prime_mover_type: ELECTRIC MOTOR, features_provided: HEATING EQUIPMENT AND FUNGUS RESISTANT TREATMENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-00-069-1975, 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
B321C
NSN: 4310-00-069-1975
FSC: 4310
CAGE: 1XBP3 — LEROI INTERNATIONAL INC DBA COMPAIR LEROI (USA)
SPECIFICATIONS
phaseTHREE
mounting_typeHORIZONTAL TANK
silencer_typeINLET
unloader_typeAUTOMATIC
stage_quantity2
prime_mover_typeELECTRIC MOTOR
cylinder_quantity2
features_providedHEATING EQUIPMENT AND FUNGUS RESISTANT TREATMENT
discharge_pressure175.000 POUNDS PER SQUARE INCH GAGE LBS
frequency_in_hertz60.0
safety_device_typeRELIEF VALVE
compressor_quantity1
NSN4310-00-069-1975
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COMPRESSOR UNIT,RECIPROCATING TITLE COMPONENT PN B321C MFR COMPRESSOR UNIT,RECIPR
KEY FEATURES
GAS FOR WHICH DESIGNED: AIR
COOLING SYSTEM DESIGN: SINGLE
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 1 STYLE AND 1 CLASS AND 5 CFM AT 175 PSI SIZE
COMPRESSOR QUANTITY: 1
COMPRESSOR COOLING MEDIUM: AIR
DISCHARGE PRESSURE: 175.000 POUNDS PER SQUARE INCH GAGE LBS
CYLINDER QUANTITY: 2
INTAKE CONNECTION TYPE: THREADED FEMALE
TECHNICAL CHARACTERISTICS (FLIS)
GAS FOR WHICH DESIGNEDAIR
COOLING SYSTEM DESIGNSINGLE
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1 STYLE AND 1 CLASS AND 5 CFM AT 175 PSI SIZE
COMPRESSOR QUANTITY1
COMPRESSOR COOLING MEDIUMAIR
DISCHARGE PRESSURE175.000 POUNDS PER SQUARE INCH GAGE LBS
CYLINDER QUANTITY2
INTAKE CONNECTION TYPETHREADED FEMALE
VOLTAGE IN VOLTS AND CURRENT TYPE208.0 AC OR 440.0 AC
COMPRESSOR SPEED AT RATED CAPACITY IN RPM530.0
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
MILSTD431Interchangeable
Same NIIN cross-reference
interchangeable
MILC13874Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B321C?
B321C is a COMPRESSOR UNIT,RECIPROCATING.
What parts can replace B321C?
There are 2 known substitutes for B321C: MILSTD431, MILC13874. Substitute compatibility should be verified for your specific system.
What is the NSN for B321C?
B321C is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-00-069-1975. This indicates validated use in U.S. government and defense supply chains.
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