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Technical Data Sheet
PartsTable / COMPONENT / 21720N
21720N ✓ 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,WIRE WOUND,PRE. Key specifications include material: STEEL CORROSION RESISTING, bore_diameter: 1.3025 INCHES NOMINAL IN, overall_length: 0.870 INCHES NOMINAL IN, bore_counterbore: NOT INCLUDED, bore_countersink: NOT INCLUDED, outside_diameter: 2.300 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 4820-01-075-1875, 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
21720N
NSN: 4820-01-075-1875
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
bore_diameter1.3025 INCHES NOMINAL IN
overall_length0.870 INCHES NOMINAL IN
bore_counterboreNOT INCLUDED
bore_countersinkNOT INCLUDED
outside_diameter2.300 INCHES NOMINAL IN
special_featuresMATERIAL CORROSION RESISTING STEEL
style_designatorPLAIN FLANGED
attachment_methodBOLTS
counterbore_depth0.020 INCHES NOMINAL IN
counterbore_diameter1.750 INCHES NOMINAL IN
counterbore_locationAA END
NSN4820-01-075-1875
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21720N · 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
•
MATERIAL: STEEL CORROSION RESISTING
•
VALVE TYPE FOR WHICH DESIGNED: PRESSURE REDUCING
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING
VALVE TYPE FOR WHICH DESIGNEDPRESSURE REDUCING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
14401Interchangeable
interchangeable cross-reference
interchangeable
MS25055-1BInterchangeable
interchangeable cross-reference
interchangeable
5970PL1038298Interchangeable
interchangeable cross-reference
interchangeable
3L240Interchangeable
interchangeable cross-reference
interchangeable
0225Interchangeable
interchangeable cross-reference
interchangeable
37-811168-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21720N?
21720N is a RESISTOR,VARIABLE,WIRE WOUND,PRE.
What parts can replace 21720N?
There are 20 known substitutes for 21720N: 14401, MS25055-1B, 5970PL1038298 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21720N?
21720N is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-075-1875. 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