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Technical Data Sheet
PartsTable / COMPONENT / GD511S
GD511S ✓ 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

HEAD AND DISK,SAFETY,PRESSURE RE. Key specifications include end_item_identification: CABLE ASSEMBLY, part_name_assigned_by_controlling_agency: DISC ASSEMBLY, BURST. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-629-3233, 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
GD511S
NSN: 4820-01-629-3233
FSC: 4820
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
end_item_identificationCABLE ASSEMBLY
part_name_assigned_by_controlling_agencyDISC ASSEMBLY, BURST
NSN4820-01-629-3233
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: GD511S · 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)
END ITEM IDENTIFICATIONCABLE ASSEMBLY
PART NAME ASSIGNED BY CONTROLLING AGENCYDISC ASSEMBLY, BURST
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
660AInterchangeable
interchangeable cross-reference
interchangeable
660A4-125Interchangeable
interchangeable cross-reference
interchangeable
5051Interchangeable
interchangeable cross-reference
interchangeable
209-062-911-1Interchangeable
interchangeable cross-reference
interchangeable
18601Interchangeable
interchangeable cross-reference
interchangeable
922315Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GD511S?
GD511S is a HEAD AND DISK,SAFETY,PRESSURE RE.
What parts can replace GD511S?
There are 19 known substitutes for GD511S: 660A, 660A4-125, 5051 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GD511S?
GD511S is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-629-3233. 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