PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11521Disk,gate Valve

Flowserve Inc · NSN 3655-00-377-5014 · FSC 3655 · No Item Name Available
Verified by PartsTable
NSN 3655-00-377-5014 — this item is cataloged by the U.S. Government under National Stock Number 3655-00-377-5014. Primary manufacturer part number: 11521.
Features
  • Disk,gate Valve — FSC 3655
  • General Characteristics Item Description: NICKEL COPPER ALLOY; 0.718 IN. DIA IN
  • 3 verified cross-references
  • Primary manufacturer: Flowserve Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk,gate Valve, cataloged under National Stock Number 3655-00-377-5014, is classified within Federal Supply Class 3655 (No Item Name Available) of the Special Industry Machinery group. The primary manufacturer of record is Flowserve Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3655-00-377-5014
Primary Part Number11521
Item NameDisk,gate Valve
FSC / FSG3655 / 36 — No Item Name Available
ManufacturerFlowserve Inc
StatusACTIVE
General Characteristics Item DescriptionNICKEL COPPER ALLOY; 0.718 IN. DIA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-114-9496ER23 INTERCHANGEABLE
Bearing,ball,annular
Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co
2915-00-305-42171-152-1 INTERCHANGEABLE
Valve,float,aircraft Fuel Tank
Parker Hannifin Corporation Div Aerospace Group Headquarters
5935-00-392-7793SM-B-157243 INTERCHANGEABLE
Retainer,electrical Connector
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4730-00-403-995411521 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Mission Systems Orchard Park Inc
2520-00-530-7544121406R92 INTERCHANGEABLE
Parts Kit,universal Joint
Dressta North America Ltd
5136-00-585-6760 INTERCHANGEABLE
Tap,thread Cutting
5950-00-647-9858506-2971-002 INTERCHANGEABLE
Transformer,radio Frequency
Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems
5365-00-740-5979 INTERCHANGEABLE
Shim
6210-00-926-76801152-1 INTERCHANGEABLE
Light,indicator
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
3020-00-951-06851152-1 INTERCHANGEABLE
Gear,dial
Drs Signal Solutions, Inc.
Cross-Reference Index
Part NumberManufacturer
3-9-3C10 Gas Equipment Engineering Corporation, the Dba Geeco (USA)
F17897 Flowserve Inc (USA)
11521 PRIMARY Flowserve Inc (USA)
Related Parts
3110-00-114-9496INTERCHANGEABLE
BEARING,BALL,ANNULAR
ER23
2915-00-305-4217INTERCHANGEABLE
VALVE,FLOAT,AIRCRAFT FUEL TANK
1-152-1
5935-00-392-7793INTERCHANGEABLE
RETAINER,ELECTRICAL CONNECTOR
SM-B-157243
4730-00-403-9954INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
11521
2520-00-530-7544INTERCHANGEABLE
PARTS KIT,UNIVERSAL JOINT
121406R92
5136-00-585-6760INTERCHANGEABLE
TAP,THREAD CUTTING
5950-00-647-9858INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
506-2971-002
5365-00-740-5979INTERCHANGEABLE
SHIM
6210-00-926-7680INTERCHANGEABLE
LIGHT,INDICATOR
1152-1
3020-00-951-0685INTERCHANGEABLE
GEAR,DIAL
1152-1
5330-01-235-6293INTERCHANGEABLE
PACKING MATERIAL
11521
5970-01-525-0321INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
115-21

Frequently Asked Questions

What is NSN 3655-00-377-5014?

NSN 3655-00-377-5014 is a Disk,gate Valve, manufactured by Flowserve Inc, classified under FSC 3655 (No Item Name Available). Status: active.

What are the part numbers for NSN 3655-00-377-5014?

NSN 3655-00-377-5014 has 3 cross-referenced part numbers: 3-9-3C10 (Gas Equipment Engineering Corporation, the Dba Geeco), F17897 (Flowserve Inc), 11521 (Flowserve Inc).

What NSN replaces 3655-00-377-5014?

There are 12 known substitutes for 3655-00-377-5014: 3110-00-114-9496, 2915-00-305-4217, 5935-00-392-7793 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11521?

Key specifications for 11521: General Characteristics Item Description: NICKEL COPPER ALLOY; 0.718 IN. DIA IN; End Item Identification: HYDROGEN-CO2 GENERATOR. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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