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PartsTable / COMPONENT / 21509N GROUP 3 PIECE 11
21509N GROUP 3 PIECE 11 ✓ 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

ROD,PISTON,LINEAR ACTUATING CYLI. Key specifications include physical_form: LIQUID, primary_container_type: BOTTLE, part_name_assigned_by_controlling_agency: MEDIUM BLOOD CULTURE AEROBIC/F 50S. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-233-4837, 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
21509N GROUP 3 PIECE 11
NSN: 4820-01-233-4837
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
physical_formLIQUID
primary_container_typeBOTTLE
part_name_assigned_by_controlling_agencyMEDIUM BLOOD CULTURE AEROBIC/F 50S
NSN4820-01-233-4837
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21509N GROUP 3 PIECE 11 · 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 22
30254Interchangeable
interchangeable cross-reference
interchangeable
N23949Interchangeable
interchangeable cross-reference
interchangeable
23949Interchangeable
interchangeable cross-reference
interchangeable
DWG/21509N PC 11Interchangeable
interchangeable cross-reference
interchangeable
21509N-GROUP2/135 ACT.W/H.O.D.Interchangeable
interchangeable cross-reference
interchangeable
Y008353913Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21509N GROUP 3 PIECE 11?
21509N GROUP 3 PIECE 11 is a ROD,PISTON,LINEAR ACTUATING CYLI.
What parts can replace 21509N GROUP 3 PIECE 11?
There are 22 known substitutes for 21509N GROUP 3 PIECE 11: 30254, N23949, 23949 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21509N GROUP 3 PIECE 11?
21509N GROUP 3 PIECE 11 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-233-4837. 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