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185219 — SWITCH,SPECIAL

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

185219: SWITCH,SPECIAL.

The SWITCH,SPECIAL is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 0.638 INCHES NOMINAL IN, style_designator: PLAIN THREADED, seat_angle_in_deg: 45.000 NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-091-1392, 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→ 185219
NSN: 4820-01-091-1392
NIINs: 010911392, 013033304
FSC: 4820 — Valves, Nonpowered
CAGE: 99657 — MAROTTA CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height0.638 INCHES NOMINAL IN
style_designatorPLAIN THREADED
seat_angle_in_deg45.000 NOMINAL
nominal_thread_size2.250 INCHES SINGLE THREADED PORTION IN
body_inside_diameter1.700 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch12 SINGLE THREADED PORTION
thread_series_designatorUN SINGLE THREADED PORTION
NSN4820-01-091-1392
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 185219 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD LENGTH: 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
•
STYLE DESIGNATOR: PLAIN THREADED
•
BODY INSIDE DIAMETER: 1.700 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 2.250 INCHES SINGLE THREADED PORTION IN
•
THREAD CLASS: 2A SINGLE THREADED PORTION A
•
THREAD QUANTITY PER INCH: 12 SINGLE THREADED PORTION
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.638 INCHES NOMINAL IN
THREAD LENGTH0.500 INCHES NOMINAL SINGLE THREADED PORTION IN
STYLE DESIGNATORPLAIN THREADED
BODY INSIDE DIAMETER1.700 INCHES NOMINAL IN
NOMINAL THREAD SIZE2.250 INCHES SINGLE THREADED PORTION IN
THREAD CLASS2A SINGLE THREADED PORTION A
THREAD QUANTITY PER INCH12 SINGLE THREADED PORTION
MATERIALSTEEL CORROSION RESISTING OVERALL
SEAT ANGLE IN DEG45.000 NOMINAL
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
SUBSTITUTES & CROSS-REFERENCES 2
CS-4820-SV-0754Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
280903-001 ITEM 27Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 185219?
185219 is a SWITCH,SPECIAL. It is classified as a MRO (MRO_GENERAL).
What parts can replace 185219?
There are 2 known substitutes for 185219: CS-4820-SV-0754, 280903-001 ITEM 27. Substitute compatibility should be verified for your specific system.
What is the NSN for 185219?
185219 is cataloged in the U.S. Government catalog under NSN 4820-01-091-1392. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.