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PartsTable / COMPONENT / 6600D 21
6600D 21 ✓ 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,TOP is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: 17-4 STAINLESS STEEL,HEAT TREATED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-176-6049, 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
6600D 21
NSN: 4820-01-176-6049
FSC: 4820
CAGE: 62654 — GRENO INDUSTRIES, INC. DBA GRENO INDUSTRIES INC (USA)
SPECIFICATIONS
general_characteristics_item_description17-4 STAINLESS STEEL,HEAT TREATED
NSN4820-01-176-6049
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6600D 21 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 17-4 STAINLESS STEEL,HEAT TREATED
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTION17-4 STAINLESS STEEL,HEAT TREATED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
6666Interchangeable
interchangeable cross-reference
interchangeable
52803Interchangeable
interchangeable cross-reference
interchangeable
GGG-G-17 TY8CL4STBInterchangeable
interchangeable cross-reference
interchangeable
GGG-G-17Interchangeable
interchangeable cross-reference
interchangeable
T2500-06Interchangeable
interchangeable cross-reference
interchangeable
R502-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6600D 21?
6600D 21 is a VALVE ASSEMBLY,TOP.
What parts can replace 6600D 21?
There are 19 known substitutes for 6600D 21: 6666, 52803, GGG-G-17 TY8CL4STB and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6600D 21?
6600D 21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-176-6049. 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