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N59921 ✓ 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 PISTON,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, overall_length: 1.750 INCHES NOMINAL IN, outside_diameter: 1.992 INCHES NOMINAL IN, features_provided: SLOTTED AND THREADED, valve_design_control_activity: 35795, valve_size_for_which_designed: 1.250 INCHES 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 4820-00-036-1517, 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
N59921
NSN: 4820-00-036-1517
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL
overall_length1.750 INCHES NOMINAL IN
outside_diameter1.992 INCHES NOMINAL IN
features_providedSLOTTED AND THREADED
valve_design_control_activity35795
valve_size_for_which_designed1.250 INCHES IN
valve_type_for_which_designedPRESSURE REDUCING
valve_model_number_for_which_designedCLASS LNS-5
NSN4820-00-036-1517
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N59921 · 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
•
VALVE DESIGN CONTROL ACTIVITY: 35795
•
OUTSIDE DIAMETER: 1.992 INCHES NOMINAL IN
•
VALVE SIZE FOR WHICH DESIGNED: 1.250 INCHES IN
•
FEATURES PROVIDED: SLOTTED AND THREADED
•
VALVE TYPE FOR WHICH DESIGNED: PRESSURE REDUCING
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: CLASS LNS-5
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
VALVE DESIGN CONTROL ACTIVITY35795
OUTSIDE DIAMETER1.992 INCHES NOMINAL IN
OVERALL LENGTH1.750 INCHES NOMINAL IN
VALVE SIZE FOR WHICH DESIGNED1.250 INCHES IN
FEATURES PROVIDEDSLOTTED AND THREADED
VALVE TYPE FOR WHICH DESIGNEDPRESSURE REDUCING
VALVE MODEL NUMBER FOR WHICH DESIGNEDCLASS LNS-5
MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
10686Interchangeable
interchangeable cross-reference
interchangeable
17389NInterchangeable
interchangeable cross-reference
interchangeable
N10686Interchangeable
interchangeable cross-reference
interchangeable
10737Interchangeable
interchangeable cross-reference
interchangeable
N10737Interchangeable
interchangeable cross-reference
interchangeable
17390NPC9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N59921?
N59921 is a PISTON,VALVE.
What parts can replace N59921?
There are 23 known substitutes for N59921: 10686, 17389N, N10686 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N59921?
N59921 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-036-1517. 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