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E-40506 ✓ 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 STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include overall_length: 6.750 INCHES NOMINAL IN, largest_outside_diameter: 0.500 INCHES NOMINAL 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 4820-00-479-8835, 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
E-40506
NSN: 4820-00-479-8835
FSC: 4820
CAGE: 63220 — FLOWSERVE INC (USA)
SPECIFICATIONS
overall_length6.750 INCHES NOMINAL IN
largest_outside_diameter0.500 INCHES NOMINAL IN
NSN4820-00-479-8835
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: E-40506 · 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
•
LARGEST OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
LARGEST OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
OVERALL LENGTH6.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
19763AInterchangeable
interchangeable cross-reference
interchangeable
BB1035Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E-40506?
E-40506 is a STEM,FLUID VALVE.
What parts can replace E-40506?
There are 2 known substitutes for E-40506: 19763A, BB1035. Substitute compatibility should be verified for your specific system.
What is the NSN for E-40506?
E-40506 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-479-8835. 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