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Technical Data Sheet
PartsTable / COMPONENT / 426-FB
426-FB ✓ 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

DIAPHRAGM,ACTUATOR VALVE,SPECIAL. Key specifications include material: RUBBER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-127-8998, 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
426-FB
NSN: 4820-00-127-8998
FSC: 4820
CAGE: 04816 — AQUAMATIC INC (USA)
SPECIFICATIONS
materialRUBBER
NSN4820-00-127-8998
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 426-FB · 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: RUBBER
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
426FInterchangeable
interchangeable cross-reference
interchangeable
813CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 426-FB?
426-FB is a DIAPHRAGM,ACTUATOR VALVE,SPECIAL.
What parts can replace 426-FB?
There are 2 known substitutes for 426-FB: 426F, 813C. Substitute compatibility should be verified for your specific system.
What is the NSN for 426-FB?
426-FB is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-127-8998. 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