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PartsTable / COMPONENT / 81320-A PIECE 2
81320-A PIECE 2 ✓ 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 DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, seat_angle: 60.0 DEGREES NOMINAL, overall_height: 9.042 INCHES NOMINAL IN, flange_diameter: 2.125 INCHES NOMINAL IN, inside_diameter: 0.415 INCHES NOMINAL IN, flange_seat_to_disk_end_height: 3.160 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-779-0777, 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
81320-A PIECE 2
NSN: 4820-00-779-0777
FSC: 4820
CAGE: 73475 — SCHNEIDER ELECTRIC SYSTEMS USA INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
seat_angle60.0 DEGREES NOMINAL
overall_height9.042 INCHES NOMINAL IN
flange_diameter2.125 INCHES NOMINAL IN
inside_diameter0.415 INCHES NOMINAL IN
flange_seat_to_disk_end_height3.160 INCHES NOMINAL IN
NSN4820-00-779-0777
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 81320-A PIECE 2 · 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
•
SEAT ANGLE: 60.0 DEGREES NOMINAL
•
FLANGE DIAMETER: 2.125 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 3.160 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.415 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE60.0 DEGREES NOMINAL
FLANGE DIAMETER2.125 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT3.160 INCHES NOMINAL IN
INSIDE DIAMETER0.415 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
OVERALL HEIGHT9.042 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
98203Interchangeable
interchangeable cross-reference
interchangeable
98303Interchangeable
interchangeable cross-reference
interchangeable
LM-HH4AS-H21Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81320-A PIECE 2?
81320-A PIECE 2 is a DISK,VALVE.
What parts can replace 81320-A PIECE 2?
There are 3 known substitutes for 81320-A PIECE 2: 98203, 98303, LM-HH4AS-H21. Substitute compatibility should be verified for your specific system.
What is the NSN for 81320-A PIECE 2?
81320-A PIECE 2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-779-0777. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026