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N11975 ✓ 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: 3.438 INCHES NOMINAL IN, outside_diameter: 4.732 INCHES NOMINAL IN, features_provided: THREADED, valve_design_control_activity: 35795, valve_size_for_which_designed: 4.000 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 4820-01-179-6376, 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
N11975
NSN: 4820-01-179-6376
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL
overall_length3.438 INCHES NOMINAL IN
outside_diameter4.732 INCHES NOMINAL IN
features_providedTHREADED
valve_design_control_activity35795
valve_size_for_which_designed4.000 INCHES IN
valve_type_for_which_designedPRESSURE REDUCING
valve_model_number_for_which_designedCLASS LNS-5
NSN4820-01-179-6376
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N11975 · 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
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: CLASS LNS-5
•
FEATURES PROVIDED: THREADED
•
VALVE DESIGN CONTROL ACTIVITY: 35795
•
VALVE SIZE FOR WHICH DESIGNED: 4.000 INCHES IN
•
VALVE TYPE FOR WHICH DESIGNED: PRESSURE REDUCING
•
OUTSIDE DIAMETER: 4.732 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
VALVE MODEL NUMBER FOR WHICH DESIGNEDCLASS LNS-5
FEATURES PROVIDEDTHREADED
VALVE DESIGN CONTROL ACTIVITY35795
VALVE SIZE FOR WHICH DESIGNED4.000 INCHES IN
VALVE TYPE FOR WHICH DESIGNEDPRESSURE REDUCING
OVERALL LENGTH3.438 INCHES NOMINAL IN
OUTSIDE DIAMETER4.732 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
10686Interchangeable
interchangeable cross-reference
interchangeable
17389NInterchangeable
interchangeable cross-reference
interchangeable
N10686Interchangeable
interchangeable cross-reference
interchangeable
10705Interchangeable
interchangeable cross-reference
interchangeable
N59921Interchangeable
interchangeable cross-reference
interchangeable
10737Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N11975?
N11975 is a PISTON,VALVE.
What parts can replace N11975?
There are 20 known substitutes for N11975: 10686, 17389N, N10686 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N11975?
N11975 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-179-6376. 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