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Technical Data Sheet
PartsTable / COMPONENT / BM11378-32
BM11378-32 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, reducer_type: CONCENTRIC, connection_type: UNTHREADED INTERNAL TUBE FIRST END, connection_style: PLAIN (TUBE) SECOND END, nominal_overall_length: 2.430 INCHES IN, nominal_outside_diameter_tube_accommodated: 2.125 INCHES SECOND END IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-7526, 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
BM11378-32
NSN: 4730-00-277-7526
FSC: 4730
CAGE: 19422 — DEMARKUS CORP REFRIGERATION ENGINEERING CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
reducer_typeCONCENTRIC
connection_typeUNTHREADED INTERNAL TUBE FIRST END
connection_stylePLAIN (TUBE) SECOND END
nominal_overall_length2.430 INCHES IN
nominal_outside_diameter_tube_accommodated2.125 INCHES SECOND END IN
NSN4730-00-277-7526
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: BM11378-32 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONNECTION TYPE: UNTHREADED EXTERNAL TUBE SECOND END
•
CONNECTION STYLE: CRIMPED (TUBE) FIRST END
•
MATERIAL: COPPER ALLOY OVERALL
•
NOMINAL OVERALL LENGTH: 2.430 INCHES IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 2.125 INCHES SECOND END IN
•
REDUCER TYPE: CONCENTRIC
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPEUNTHREADED EXTERNAL TUBE SECOND END
CONNECTION STYLECRIMPED (TUBE) FIRST END
CONNECTION STYLEPLAIN (TUBE) SECOND END
MATERIALCOPPER ALLOY OVERALL
NOMINAL OVERALL LENGTH2.430 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED2.125 INCHES SECOND END IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE FIRST END
REDUCER TYPECONCENTRIC
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.375 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
B16-22-1963Interchangeable
interchangeable cross-reference
interchangeable
WW-T-725Interchangeable
interchangeable cross-reference
interchangeable
ANSIB16.22Interchangeable
interchangeable cross-reference
interchangeable
845-2445071Interchangeable
interchangeable cross-reference
interchangeable
MS35927-25Interchangeable
interchangeable cross-reference
interchangeable
W1092Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BM11378-32?
BM11378-32 is a REDUCER,TUBE.
What parts can replace BM11378-32?
There are 15 known substitutes for BM11378-32: B16-22-1963, WW-T-725, ANSIB16.22 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BM11378-32?
BM11378-32 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-7526. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026