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Technical Data Sheet
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J-447 ✓ 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 TRAP,STEAM is a the manufacturer industrial component. Key specifications include body_design: STRAIGHT PATTERN, design_type: THERMOSTATIC, special_features: W/PREINSERTED BRAZING RINGS, inlet_connection_type: FEMALE BRAZING NIPPLE, outlet_connection_type: FEMALE BRAZING NIPPLE, nondefinitive_spec/std_data: 2 CLASS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-142-1786, 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
J-447
NSN: 4730-01-142-1786
FSC: 4730
CAGE: 53059 — SPIRAX SARCO INC DBA SPIRAX SARCO (USA)
SPECIFICATIONS
body_designSTRAIGHT PATTERN
design_typeTHERMOSTATIC
special_featuresW/PREINSERTED BRAZING RINGS
inlet_connection_typeFEMALE BRAZING NIPPLE
outlet_connection_typeFEMALE BRAZING NIPPLE
nondefinitive_spec/std_data2 CLASS
maximum_steam_working_pressureERR-060
rated_capacity_at_maximum_working_pressure4500.000 POUNDS OF WATER PER HOUR LBS
NSN4730-01-142-1786
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: J-447 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
K4551-2Interchangeable
interchangeable cross-reference
interchangeable
MILT2118Interchangeable
interchangeable cross-reference
interchangeable
D4456Interchangeable
interchangeable cross-reference
interchangeable
S791N11-2Interchangeable
interchangeable cross-reference
interchangeable
C2C1960Interchangeable
interchangeable cross-reference
interchangeable
1633-37-30PC135Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is J-447?
J-447 is a TRAP,STEAM.
What parts can replace J-447?
There are 16 known substitutes for J-447: K4551-2, MILT2118, D4456 and 13 more. Substitute compatibility should be verified for your specific system.
Is J-447 still available?
J-447 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