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Technical Data Sheet
PartsTable / MRO / 183649
183649 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 SWITCH,FLOW is a the manufacturer industrial component. Key specifications include mounting_method: THREADED HOLE(S) AND THREADED STUD(S), contact_adjustability: DEACTUATION POINT NOT ADJUSTABLE, contact_action_stimulus: DECREASE, media_for_which_designed: LIQUID. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-693-9412, 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
MRO→ MRO_GENERAL→ 183649
NSN: 4730-00-693-9412
FSC: 4730
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
mounting_methodTHREADED HOLE(S) AND THREADED STUD(S)
special_featuresGENERAL PURPOSE STRAIGHT THROUGH FLOW PATH ON A BRONZE 2 INCH LINE; FLOW EQUALS 13 GPM; FS-200 IDENTIFYS THE SHUTTLE TYPE SERIES IN
contact_adjustabilityDEACTUATION POINT NOT ADJUSTABLE
contact_action_stimulusDECREASE
media_for_which_designedLIQUID
NSN4730-00-693-9412
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 183649 · 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 3
126629Interchangeable
interchangeable cross-reference
interchangeable
183649Interchangeable
interchangeable cross-reference
interchangeable
FS-200Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 183649?
183649 is a SWITCH,FLOW. It is classified as a MRO (MRO_GENERAL).
What parts can replace 183649?
There are 3 known substitutes for 183649: 126629, 183649, FS-200. Substitute compatibility should be verified for your specific system.
What is the NSN for 183649?
183649 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-693-9412. 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