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Technical Data Sheet
PartsTable / COMPONENT / A21506
A21506 ✓ 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

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: COPPER ALLOY OVERALL, overall_height: 0.312 INCHES NOMINAL IN, style_designator: PLAIN, seat_angle_in_deg: 45.000 NOMINAL, body_inside_diameter: 1.469 INCHES NOMINAL IN, body_outside_diameter: 1.625 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 4820-00-069-9071, 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
A21506
NSN: 4820-00-069-9071
FSC: 4820
CAGE: 89326 — BARKSDALE, INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
overall_height0.312 INCHES NOMINAL IN
style_designatorPLAIN
seat_angle_in_deg45.000 NOMINAL
body_inside_diameter1.469 INCHES NOMINAL IN
body_outside_diameter1.625 INCHES NOMINAL IN
seating_surface_shapeANGULAR
NSN4820-00-069-9071
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A21506 · 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
•
SEATING SURFACE SHAPE: ANGULAR
•
MATERIAL: COPPER ALLOY OVERALL
•
STYLE DESIGNATOR: PLAIN
•
BODY OUTSIDE DIAMETER: 1.625 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 1.469 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
SEATING SURFACE SHAPEANGULAR
MATERIALCOPPER ALLOY OVERALL
STYLE DESIGNATORPLAIN
BODY OUTSIDE DIAMETER1.625 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.469 INCHES NOMINAL IN
OVERALL HEIGHT0.312 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.000 NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
51863Interchangeable
interchangeable cross-reference
interchangeable
R26343Interchangeable
interchangeable cross-reference
interchangeable
R1885SNInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A21506?
A21506 is a RESISTOR,VARIABLE,NONWIRE WOUND,.
What parts can replace A21506?
There are 3 known substitutes for A21506: 51863, R26343, R1885SN. Substitute compatibility should be verified for your specific system.
What is the NSN for A21506?
A21506 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-069-9071. 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