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PartsTable / COMPONENT / N21870
N21870 ✓ 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 color: RED SINGLE ACTUATOR, guide: NOT INCLUDED, diameter: 0.812 INCHES NOMINAL IN, material: STEEL LOCATION NOT OTHERWISE SPECIFIED, body_style: HOLE MOUNT, body_width: 0.795 INCHES MAXIMUM 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 4820-01-094-1687, 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
N21870
NSN: 4820-01-094-1687
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
colorRED SINGLE ACTUATOR
guideNOT INCLUDED
diameter0.812 INCHES NOMINAL IN
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
body_styleHOLE MOUNT
body_width0.795 INCHES MAXIMUM IN
flute_typeINTEGRAL
shank_typeMORSE TAPER
body_length1.236 INCHES NOMINAL IN
reamer_typeFLUTED CHUCKING
flute_designSPIRAL
flute_length2.500 INCHES NOMINAL IN
NSN4820-01-094-1687
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N21870 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
537.8125Interchangeable
interchangeable cross-reference
interchangeable
50-10158Interchangeable
interchangeable cross-reference
interchangeable
224C-13/16Interchangeable
interchangeable cross-reference
interchangeable
21870Interchangeable
interchangeable cross-reference
interchangeable
21935Interchangeable
interchangeable cross-reference
interchangeable
S6127-61801-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N21870?
N21870 is a PISTON,VALVE.
What parts can replace N21870?
There are 9 known substitutes for N21870: 537.8125, 50-10158, 224C-13/16 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N21870?
N21870 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-094-1687. 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