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101B209RA — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

101B209RA: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL BODY, taper_length: 0.428 INCHES NOMINAL IN, flange_diameter: 2.281 INCHES NOMINAL IN, seat_angle_in_deg: 20.000 NOMINAL, under_flange_height: 0.750 INCHES NOMINAL IN, fsc_application_data: STEAM TURBINE,ELECTRIC GENERATION. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-993-5890, 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
101B209RA
NSN: 4820-00-993-5890
FSC: 4820 — Valves, Nonpowered
CAGE: 24446 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL BODY
taper_length0.428 INCHES NOMINAL IN
flange_diameter2.281 INCHES NOMINAL IN
seat_angle_in_deg20.000 NOMINAL
under_flange_height0.750 INCHES NOMINAL IN
fsc_application_dataSTEAM TURBINE,ELECTRIC GENERATION
taper_major_diameter1.562 INCHES NOMINAL IN
taper_minor_diameter1.250 INCHES NOMINAL IN
body_outside_diameter1.936 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
flange_seat_to_disk_end_height0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
material_document_and_classificationMIL-R-17131,TYPE-MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
NSN4820-00-993-5890
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 101B209RA · 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 SEAT TO DISK END HEIGHT: 0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
•
FLANGE DIAMETER: 2.281 INCHES NOMINAL IN
•
FSC APPLICATION DATA: STEAM TURBINE,ELECTRIC GENERATION
•
BODY OUTSIDE DIAMETER: 1.936 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN
•
TAPER MINOR DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-17131,TYPE-MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
•
TAPER MAJOR DIAMETER: 1.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
FLANGE DIAMETER2.281 INCHES NOMINAL IN
FSC APPLICATION DATASTEAM TURBINE,ELECTRIC GENERATION
BODY OUTSIDE DIAMETER1.936 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN
TAPER MINOR DIAMETER1.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,TYPE-MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18410 CLASS B,COND A MIL SPEC SINGLE MATERIAL RESPONSE BODY
TAPER MAJOR DIAMETER1.562 INCHES NOMINAL IN
TAPER LENGTH0.428 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.750 INCHES NOMINAL IN
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 101B209RA?
101B209RA is a SEAT,VALVE.
What is the NSN for 101B209RA?
101B209RA is cataloged in the U.S. Government catalog under NSN 4820-00-993-5890. 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.