PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 4820PL1290426
4820PL1290426 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY SEAT, flange_diameter: 2.500 INCHES NOMINAL IN, style_designator: THREADED FLANGED, under_flange_height: 0.562 INCHES NOMINAL IN, body_inside_diameter: 1.750 INCHES NOMINAL IN, seating_surface_shape: FLAT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-308-7200, 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
4820PL1290426
NSN: 4820-01-308-7200
FSC: 4820
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialCOPPER ALLOY SEAT
flange_diameter2.500 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
under_flange_height0.562 INCHES NOMINAL IN
body_inside_diameter1.750 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.281 INCHES NOMINAL IN
NSN4820-01-308-7200
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4820PL1290426 · 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: 2.500 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.562 INCHES NOMINAL IN
•
SEATING SURFACE SHAPE: FLAT
•
MATERIAL: COPPER ALLOY SEAT
•
STYLE DESIGNATOR: THREADED FLANGED
•
FLANGE SEAT TO DISK END HEIGHT: 0.281 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 1.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE DIAMETER2.500 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.562 INCHES NOMINAL IN
SEATING SURFACE SHAPEFLAT
MATERIALCOPPER ALLOY SEAT
STYLE DESIGNATORTHREADED FLANGED
FLANGE SEAT TO DISK END HEIGHT0.281 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
Y12044Interchangeable
interchangeable cross-reference
interchangeable
30370Interchangeable
interchangeable cross-reference
interchangeable
336MAS4Interchangeable
interchangeable cross-reference
interchangeable
30370-2Interchangeable
interchangeable cross-reference
interchangeable
7100122788Interchangeable
interchangeable cross-reference
interchangeable
2389 IN PIECE 14Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 4820PL1290426?
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 4820PL1290426?
4820PL1290426 is a SEAT,VALVE.
What parts can replace 4820PL1290426?
There are 6 known substitutes for 4820PL1290426: Y12044, 30370, 336MAS4 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4820PL1290426?
4820PL1290426 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-308-7200. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 4820PL1290426

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026