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Technical Data Sheet
PartsTable / COMPONENT / 1/2DDB
1/2DDB ✓ 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 1/2DDB is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-253-5794, 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
1/2DDB
NSN: 4730-00-253-5794
FSC: 4730
CAGE: 98441 — PARKER HANNIFIN CORP DBA PNEUTRONICS DIV STRATOFLEX PRODUCTS DIVISION (USA)
SPECIFICATIONS
Part Number1/2DDB
NSN4730-00-253-5794
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1/2DDB · 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
•
OPERATING PRESSURE: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
•
FLOW ANGLE: 90.0 DEGREES
•
MATERIAL: COPPER ALLOY OVERALL
•
NONDEFINITIVE SPEC/STD DATA: B CLASS
•
MEDIA FOR WHICH DESIGNED: STEAM FIRST RESPONSE
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY MATERIAL
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
FLOW ANGLE90.0 DEGREES
MATERIALCOPPER ALLOY OVERALL
OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
NONDEFINITIVE SPEC/STD DATAB CLASS
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY MATERIAL
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
MAXIMUM OPERATING TEMP65.6 CELSIUS SECOND RESPONSE DEGC
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
410967Interchangeable
interchangeable cross-reference
interchangeable
4-4-130238BInterchangeable
interchangeable cross-reference
interchangeable
L6289-11Interchangeable
interchangeable cross-reference
interchangeable
7701-1Interchangeable
interchangeable cross-reference
interchangeable
GF11S1010CUInterchangeable
interchangeable cross-reference
interchangeable
B16.15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1/2DDB?
1/2DDB is a 1/2DDB.
What parts can replace 1/2DDB?
There are 29 known substitutes for 1/2DDB: 410967, 4-4-130238B, L6289-11 and 26 more. Substitute compatibility should be verified for your specific system.
Is 1/2DDB still available?
1/2DDB is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026