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Technical Data Sheet

859FFU-3:CPL-551 — UNION,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

859FFU-3:CPL-551: UNION,PIPE.

The UNION,PIPE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, seat_type: GASKET, reducer_type: CONCENTRIC, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: STREAMLINED W/ TWO BRAZING RINGS (PIPE) ALL ENDS, style_designator: UNTHREADED. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-877-9606, 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
859FFU-3:CPL-551
NSN: 4730-00-877-9606
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0JC12 — BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
seat_typeGASKET
reducer_typeCONCENTRIC
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSTREAMLINED W/ TWO BRAZING RINGS (PIPE) ALL ENDS
style_designatorUNTHREADED
operating_pressure1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
coupling_flange_shapeHEXAGON
maximum_operating_temp65.6 CELSIUS SINGLE RESPONSE DEGC
nominal_overall_length1.980 INCHES IN
media_for_which_designedWATER-OIL-GAS SINGLE RESPONSE
furnished_items_and_quantity1 PREFORMED PACKING AND 2 BRAZING RING
NSN4730-00-877-9606
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 859FFU-3:CPL-551 · 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
•
FURNISHED ITEMS AND QUANTITY: 1 PREFORMED PACKING AND 2 BRAZING RING
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.500 INCHES ALL ENDS IN
•
CONNECTION STYLE: STREAMLINED W/ TWO BRAZING RINGS (PIPE) ALL ENDS
•
COUPLING FLANGE SHAPE: HEXAGON
•
NOMINAL OVERALL LENGTH: 1.980 INCHES IN
•
CONNECTION TYPE: UNTHREADED INTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: UNTHREADED
•
OPERATING PRESSURE: 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 PREFORMED PACKING AND 2 BRAZING RING
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES ALL ENDS IN
CONNECTION STYLESTREAMLINED W/ TWO BRAZING RINGS (PIPE) ALL ENDS
COUPLING FLANGE SHAPEHEXAGON
NOMINAL OVERALL LENGTH1.980 INCHES IN
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATORUNTHREADED
OPERATING PRESSURE1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SEAT TYPEGASKET
MAXIMUM OPERATING TEMP65.6 CELSIUS SINGLE RESPONSE DEGC
SUBSTITUTES & CROSS-REFERENCES 2
810-1385859PC1T03-6 1/2INSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
810-1385859PC1T03-6Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 859FFU-3:CPL-551?
859FFU-3:CPL-551 is a UNION,PIPE.
What parts can replace 859FFU-3:CPL-551?
There are 2 known substitutes for 859FFU-3:CPL-551: 810-1385859PC1T03-6 1/2IN, 810-1385859PC1T03-6. Substitute compatibility should be verified for your specific system.
What is the NSN for 859FFU-3:CPL-551?
859FFU-3:CPL-551 is cataloged in the U.S. Government catalog under NSN 4730-00-877-9606. This indicates validated use in U.S. government and defense supply chains.
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