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Technical Data Sheet
B16 11-73 ✓ 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,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_type: BEVELED, flow_angle: 45.0 DEGREES, leg_length: 1.750 INCHES NOMINAL ALL ENDS IN, reducer_type: CONCENTRIC, connection_type: UNTHREADED EXTERNAL PIPE SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-595-3978, 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
B16 11-73
NSN: 4730-00-595-3978
FSC: 4730
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_typeBEVELED
flow_angle45.0 DEGREES
leg_length1.750 INCHES NOMINAL ALL ENDS IN
reducer_typeCONCENTRIC
connection_typeUNTHREADED EXTERNAL PIPE SECOND END
connection_styleSOCKET (PIPE) FIRST END
special_featuresMATERIAL = ASTM A105 GRADE II, FOR USE WITH SCH 80 PIPE
style_designatorUNTHREADED
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
coupling_flange_shapeHEXAGON
maximum_operating_temp37.8 CELSIUS SINGLE RESPONSE DEGC
NSN4730-00-595-3978
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B16 11-73 · 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
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNED: SCHEDULE 80 SECOND END
MATERIAL: STEEL OR IRON OVERALL
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY MATERIAL
MEDIA FOR WHICH DESIGNED: FLUID SECOND RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A182-57T ASSN STD 1ST MATERIAL RESPONSE OVERALL
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
FLOW ANGLE: 45.0 DEGREES
CONNECTION STYLE: SOCKET (PIPE) ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSCHEDULE 80 SECOND END
MATERIALSTEEL OR IRON OVERALL
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY MATERIAL
MEDIA FOR WHICH DESIGNEDFLUID SECOND RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A182-57T ASSN STD 1ST MATERIAL RESPONSE OVERALL
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
FLOW ANGLE45.0 DEGREES
CONNECTION STYLESOCKET (PIPE) ALL ENDS
MAXIMUM OPERATING TEMP538.0 FAHRENHEIT FIRST RESPONSE DEGF
LEG LENGTH0.812 INCHES MAXIMUM SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
B16-11SCHEDULE80Interchangeable
interchangeable cross-reference
interchangeable
75131AInterchangeable
interchangeable cross-reference
interchangeable
B16.11Interchangeable
interchangeable cross-reference
interchangeable
B16.11-73Interchangeable
Same NIIN cross-reference
interchangeable
B16-11-1-2IN-IPS1500PSI45ELLInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B16 11-73?
B16 11-73 is a REDUCER,PIPE.
What parts can replace B16 11-73?
There are 5 known substitutes for B16 11-73: B16-11SCHEDULE80, 75131A, B16.11 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B16 11-73?
B16 11-73 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-595-3978. This indicates validated use in U.S. government and defense supply chains.
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