PartsTable
Technical Data Sheet
Download PDF

166198 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

166198: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include overall_height: 0.830 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN, flange_diameter: 0.511 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN, body_inside_diameter: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN, fsc_application_data: REGULATOR,ANTI&ICING AIR, body_outside_diameter: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN, end_item_identification: 2995008670625 496840 REGULATOR. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-396-4452, 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
166198
NSN: 4820-00-396-4452
FSC: 4820 — Valves, Nonpowered
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
overall_height0.830 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
flange_diameter0.511 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
body_inside_diameter0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
fsc_application_dataREGULATOR,ANTI&ICING AIR
body_outside_diameter0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
end_item_identification2995008670625 496840 REGULATOR
NSN4820-00-396-4452
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 166198 · 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
•
FLANGE DIAMETER: 0.511 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
•
FSC APPLICATION DATA: REGULATOR,ANTI&ICING AIR
•
BODY OUTSIDE DIAMETER: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
•
BODY INSIDE DIAMETER: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER0.511 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
OVERALL HEIGHT0.830 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
FSC APPLICATION DATAREGULATOR,ANTI&ICING AIR
BODY OUTSIDE DIAMETER0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
END ITEM IDENTIFICATION2995008670625 496840 REGULATOR
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 166198?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 166198?
166198 is a SEAT,VALVE.
What is the NSN for 166198?
166198 is cataloged in the U.S. Government catalog under NSN 4820-00-396-4452. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 166198

✓ 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.