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PartsTable / COMPONENT / 4820PL1257469
4820PL1257469 ✓ 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 DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER AND PLASTIC POLYAMIDE NYLON, hole_diameter: 0.171 INCHES NOMINAL IN, outside_diameter: 3.145 INCHES NOMINAL IN, style_designator: FLAT, material_thickness: 0.032 INCHES NOMINAL IN, bolt_circle_diameter: 2.472 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 4820-00-411-2039, 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
4820PL1257469
NSN: 4820-00-411-2039
FSC: 4820
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialRUBBER AND PLASTIC POLYAMIDE NYLON
hole_diameter0.171 INCHES NOMINAL IN
outside_diameter3.145 INCHES NOMINAL IN
style_designatorFLAT
bolt_hole_quantity8
material_thickness0.032 INCHES NOMINAL IN
bolt_circle_diameter2.472 INCHES NOMINAL IN
center_hole_diameter0.375 INCHES NOMINAL IN
NSN4820-00-411-2039
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4820PL1257469 · 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
•
BOLT HOLE QUANTITY: 8
•
HOLE DIAMETER: 0.171 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.145 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.032 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.375 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 2.472 INCHES NOMINAL IN
•
MATERIAL: RUBBER AND PLASTIC POLYAMIDE NYLON
•
STYLE DESIGNATOR: FLAT
TECHNICAL CHARACTERISTICS (FLIS)
BOLT HOLE QUANTITY8
HOLE DIAMETER0.171 INCHES NOMINAL IN
OUTSIDE DIAMETER3.145 INCHES NOMINAL IN
MATERIAL THICKNESS0.032 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.375 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER2.472 INCHES NOMINAL IN
MATERIALRUBBER AND PLASTIC POLYAMIDE NYLON
STYLE DESIGNATORFLAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
831-C-FXC-4Interchangeable
interchangeable cross-reference
interchangeable
C7548Interchangeable
interchangeable cross-reference
interchangeable
26Interchangeable
interchangeable cross-reference
interchangeable
D26Interchangeable
interchangeable cross-reference
interchangeable
1632PInterchangeable
interchangeable cross-reference
interchangeable
7317Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4820PL1257469?
4820PL1257469 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 4820PL1257469?
There are 7 known substitutes for 4820PL1257469: 831-C-FXC-4, C7548, 26 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4820PL1257469?
4820PL1257469 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-411-2039. 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