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101B209BAPIECE1 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

101B209BAPIECE1: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL BODY, seat_radius: 0.288 INCHES MINIMUM AND 0.294 INCHES MAXIMUM IN, flange_diameter: 2.626 INCHES MINIMUM AND 2.631 INCHES MAXIMUM IN, style_designator: PLAIN FLANGED, under_flange_height: 1.116 INCHES NOMINAL IN, body_outside_diameter: 2.062 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-858-0108, 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
101B209BAPIECE1
NSN: 4820-00-858-0108
FSC: 4820 — Valves, Nonpowered
CAGE: 03502 — GENERAL ELECTRIC CO NAVAL AND DRIVE TURBINE SYSTEMS DEPT (USA)
SPECIFICATIONS
materialSTEEL BODY
seat_radius0.288 INCHES MINIMUM AND 0.294 INCHES MAXIMUM IN
flange_diameter2.626 INCHES MINIMUM AND 2.631 INCHES MAXIMUM IN
style_designatorPLAIN FLANGED
under_flange_height1.116 INCHES NOMINAL IN
body_outside_diameter2.062 INCHES NOMINAL IN
seating_surface_shapeRADIAL
body_stepped_inside_diameter1.241 INCHES MINIMUM AND 1.244 INCHES MAXIMUM SECOND STEP IN
flange_seat_to_disk_end_height0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-763,CL 410,COND T FED SPEC SINGLE MATERIAL RESPONSE BODY
NSN4820-00-858-0108
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 101B209BAPIECE1 · 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: 0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
•
FLANGE DIAMETER: 2.626 INCHES MINIMUM AND 2.631 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 2.062 INCHES NOMINAL IN
•
BODY STEPPED INSIDE DIAMETER: 0.969 INCHES MINIMUM AND 0.971 INCHES MAXIMUM FIRST STEP IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-17131,TY MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
FLANGE DIAMETER2.626 INCHES MINIMUM AND 2.631 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER2.062 INCHES NOMINAL IN
BODY STEPPED INSIDE DIAMETER0.969 INCHES MINIMUM AND 0.971 INCHES MAXIMUM FIRST STEP IN
BODY STEPPED INSIDE DIAMETER1.241 INCHES MINIMUM AND 1.244 INCHES MAXIMUM SECOND STEP IN
STYLE DESIGNATORPLAIN FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,TY MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CL 410,COND T FED SPEC SINGLE MATERIAL RESPONSE BODY
SEAT RADIUS0.288 INCHES MINIMUM AND 0.294 INCHES MAXIMUM IN
UNDER FLANGE HEIGHT1.116 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 3
101B209BAPC1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
101B209BYPIECE1Reference document
Same NSN cross-reference
Reference document — Secondary reference
101B209BYPC1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 101B209BAPIECE1?
101B209BAPIECE1 is a SEAT,VALVE.
What parts can replace 101B209BAPIECE1?
There are 3 known substitutes for 101B209BAPIECE1: 101B209BAPC1, 101B209BYPIECE1, 101B209BYPC1. Substitute compatibility should be verified for your specific system.
What is the NSN for 101B209BAPIECE1?
101B209BAPIECE1 is cataloged in the U.S. Government catalog under NSN 4820-00-858-0108. 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.