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Technical Data Sheet
21509N-GROUP2/135 ACT.W/H.O.D. ✓ 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 21509N-GROUP2/135 ACT.W/H.O.D. is a the manufacturer industrial component. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-278-6253, 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-GROUP2/135 ACT.W/H.O.D.
NSN: 4810-01-278-6253
FSC: 4810
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
Part Number21509N-GROUP2/135 ACT.W/H.O.D.
NSN4810-01-278-6253
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 21509N-GROUP2/135 ACT.W/H.O.D. · 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 25
21509NInterchangeable
interchangeable cross-reference
interchangeable
30254Interchangeable
interchangeable cross-reference
interchangeable
21509N GROUP 3 PIECE 11Interchangeable
interchangeable cross-reference
interchangeable
N23949Interchangeable
interchangeable cross-reference
interchangeable
23949Interchangeable
interchangeable cross-reference
interchangeable
DWG/21509N PC 11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21509N-GROUP2/135 ACT.W/H.O.D.?
21509N-GROUP2/135 ACT.W/H.O.D. is a 21509N-GROUP2/135 ACT.W/H.O.D..
What parts can replace 21509N-GROUP2/135 ACT.W/H.O.D.?
There are 25 known substitutes for 21509N-GROUP2/135 ACT.W/H.O.D.: 21509N, 30254, 21509N GROUP 3 PIECE 11 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21509N-GROUP2/135 ACT.W/H.O.D.?
21509N-GROUP2/135 ACT.W/H.O.D. is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-278-6253. This indicates validated use in U.S. government and defense supply chains.
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