PartsTable
Technical Data Sheet
WWU-531-03TA ✓ 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 UNION,PIPE is a the manufacturer industrial component. Key specifications include material: IRON MALLEABLE SEAT, seat_type: GROUND-JOINT, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, special_features: GROUND JOINT SEAT TYPE IS COPPER ALLOY, style_designator: SCREWED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-266-3905, 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
WWU-531-03TA
NSN: 4730-00-266-3905
FSC: 4730
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialIRON MALLEABLE SEAT
seat_typeGROUND-JOINT
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
special_featuresGROUND JOINT SEAT TYPE IS COPPER ALLOY
style_designatorSCREWED
operating_pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
nominal_thread_size0.500 INCHES ALL ENDS IN
nominal_overall_length1.735 INCHES IN
media_for_which_designedWATER-OIL-GAS SECOND RESPONSE
thread_series_designatorNPT ALL ENDS
nondefinitive_spec/std_dataA TYPE AND 1 CLASS
NSN4730-00-266-3905
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: WWU-531-03TA · 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
MATERIAL: IRON MALLEABLE SEAT
MEDIA FOR WHICH DESIGNED: STEAM FIRST RESPONSE
STYLE DESIGNATOR: SCREWED
NOMINAL THREAD SIZE: 0.500 INCHES ALL ENDS IN
SEAT TYPE: GROUND-JOINT
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
NOMINAL OVERALL LENGTH: 1.735 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALIRON MALLEABLE SEAT
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
STYLE DESIGNATORSCREWED
SPECIAL FEATURESGROUND JOINT SEAT TYPE IS COPPER ALLOY
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
SEAT TYPEGROUND-JOINT
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
NOMINAL OVERALL LENGTH1.735 INCHES IN
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
22U531Interchangeable
interchangeable cross-reference
interchangeable
B16.39Interchangeable
interchangeable cross-reference
interchangeable
WWU531-22TBInterchangeable
interchangeable cross-reference
interchangeable
ASME-B16.39Interchangeable
interchangeable cross-reference
interchangeable
ASMEB16.39-02-T-AInterchangeable
interchangeable cross-reference
interchangeable
PT1280Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is WWU-531-03TA?
WWU-531-03TA is a UNION,PIPE.
What parts can replace WWU-531-03TA?
There are 24 known substitutes for WWU-531-03TA: 22U531, B16.39, WWU531-22TB and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for WWU-531-03TA?
WWU-531-03TA is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-266-3905. This indicates validated use in U.S. government and defense supply chains.
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