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Technical Data Sheet
PartsTable / COMPONENT / 4518-1 1/4X1
4518-1 1/4X1 ✓ 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 4518-1 1/4X1 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-456-1080, 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
4518-1 1/4X1
NSN: 4730-00-456-1080
FSC: 4730
CAGE: 61623 — NIBCO INC CHEMTROL DIV (USA)
SPECIFICATIONS
Part Number4518-1 1/4X1
NSN4730-00-456-1080
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4518-1 1/4X1 · 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 STYLE: SOCKET (PIPE) ALL ENDSSOCKET (PIPE) ALL ENDS
•
MAXIMUM OPERATING TEMP: 65.6 CELSIUS SINGLE RESPONSE65.6 CELSIUS SINGLE RESPONSE DEGC
•
REDUCER TYPE: CONCENTRICCONCENTRIC
•
CONNECTION TYPE: UNTHREADED INTERNAL PIPE ALL ENDSUNTHREADED INTERNAL PIPE ALL ENDS
•
OPERATING PRESSURE: 143.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE143.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL OVERALL LENGTH: 1.406 INCHES1.406 INCHES IN
•
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNED: SCHEDULE 80 SECOND ENDSCHEDULE 80 SECOND END
•
MATERIAL: PLASTIC POLYVINYL CHLORIDE (PVC) OVERALLPLASTIC POLYVINYL CHLORIDE (PVC) OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLESOCKET (PIPE) ALL ENDSSOCKET (PIPE) ALL ENDS
MAXIMUM OPERATING TEMP65.6 CELSIUS SINGLE RESPONSE65.6 CELSIUS SINGLE RESPONSE DEGC
REDUCER TYPECONCENTRICCONCENTRIC
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDSUNTHREADED INTERNAL PIPE ALL ENDS
OPERATING PRESSURE143.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE143.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL OVERALL LENGTH1.406 INCHES1.406 INCHES IN
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSCHEDULE 80 SECOND ENDSCHEDULE 80 SECOND END
MATERIALPLASTIC POLYVINYL CHLORIDE (PVC) OVERALLPLASTIC POLYVINYL CHLORIDE (PVC) OVERALL
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSCHEDULE 80 FIRST ENDSCHEDULE 80 FIRST END
NOMINAL PIPE SIZE ACCOMMODATED1.250 INCHES FIRST END1.250 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
W-L-101/31Interchangeable
interchangeable cross-reference
interchangeable
25A120VInterchangeable
interchangeable cross-reference
interchangeable
8473Interchangeable
interchangeable cross-reference
interchangeable
A-A-2542Interchangeable
interchangeable cross-reference
interchangeable
TT-S-223Interchangeable
interchangeable cross-reference
interchangeable
4518Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4518-1 1/4X1?
4518-1 1/4X1 is a 4518-1 1/4X1.
What parts can replace 4518-1 1/4X1?
There are 14 known substitutes for 4518-1 1/4X1: W-L-101/31, 25A120V, 8473 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4518-1 1/4X1?
4518-1 1/4X1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-456-1080. 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