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Technical Data Sheet
PartsTable / COMPONENT / APR21-18
APR21-18 ✓ 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 VALVE ASSEMBLY is a the manufacturer industrial component. Key specifications include special_features: MANUFACTURERS SUGGESTED NAME IS VALVE, PRESSURE-REGULATING, end_item_identification: 9P10-4-9-3. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-601-1070, 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
APR21-18
NSN: 4810-00-601-1070
FSC: 4810
CAGE: 99193 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - PHOENIX (USA)
SPECIFICATIONS
special_featuresMANUFACTURERS SUGGESTED NAME IS VALVE, PRESSURE-REGULATING
end_item_identification9P10-4-9-3
NSN4810-00-601-1070
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: APR21-18 · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESMANUFACTURERS SUGGESTED NAME IS VALVE, PRESSURE-REGULATING
END ITEM IDENTIFICATION9P10-4-9-3
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
1084-20Interchangeable
interchangeable cross-reference
interchangeable
536645Interchangeable
interchangeable cross-reference
interchangeable
VT3435Interchangeable
interchangeable cross-reference
interchangeable
10B420Interchangeable
interchangeable cross-reference
interchangeable
CB594PInterchangeable
interchangeable cross-reference
interchangeable
1586AS451-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is APR21-18?
APR21-18 is a VALVE ASSEMBLY.
What parts can replace APR21-18?
There are 9 known substitutes for APR21-18: 1084-20, 536645, VT3435 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for APR21-18?
APR21-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-601-1070. 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