PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50553Valve,vent

Williams International Co., L.l.c. · NSN 4820-01-711-0599 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-711-0599 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-711-0599. Primary manufacturer part number: 50553.
Features
  • Valve,vent — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Williams International Co., L.l.c.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,vent, cataloged under National Stock Number 4820-01-711-0599, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Williams International Co., L.l.c.. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-711-0599
Primary Part Number50553
Item NameValve,vent
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWilliams International Co., L.l.c.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5945-00-180-8330AE103-003-99 INTERCHANGEABLE
Relay,electromagnetic
Dare Electronics, Inc.
5815-00-356-3361SC-B-70068 INTERCHANGEABLE
Teletypewriter Subassembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
1660-00-536-25925055 INTERCHANGEABLE
Regulator,air,high
Aar Allen Services, Inc Dba Aar Component Services Wellington
5998-01-060-639050553 INTERCHANGEABLE
Circuit Card Assembly
Alliant Techsystems Operations Llc Div Defense Electronic Systems
4820-01-080-9603287298N INTERCHANGEABLE
Parts Kit,check Valve
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5365-01-239-3461 INTERCHANGEABLE
Spacer,plate
3040-01-448-929972235 INTERCHANGEABLE
Shaft,shouldered
Paccar Winch Inc Dba Paccar Winch Division
Cross-Reference Index
Part NumberManufacturer
50553 PRIMARY Williams International Co., L.l.c. (USA)
Related Parts
5945-00-180-8330INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
AE103-003-99
5815-00-356-3361INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
SC-B-70068
1660-00-536-2592INTERCHANGEABLE
REGULATOR,AIR,HIGH
5055
5998-01-060-6390INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
50553
4820-01-080-9603INTERCHANGEABLE
PARTS KIT,CHECK VALVE
287298N
5365-01-239-3461INTERCHANGEABLE
SPACER,PLATE
3040-01-448-9299INTERCHANGEABLE
SHAFT,SHOULDERED
72235

Frequently Asked Questions

What is NSN 4820-01-711-0599?

NSN 4820-01-711-0599 is a Valve,vent, manufactured by Williams International Co., L.l.c., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-711-0599?

NSN 4820-01-711-0599 has 1 cross-referenced part number: 50553 (Williams International Co., L.l.c.).

What NSN replaces 4820-01-711-0599?

There are 7 known substitutes for 4820-01-711-0599: 5945-00-180-8330, 5815-00-356-3361, 1660-00-536-2592 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50553?

Key specifications for 50553: Part Name Assigned by Controlling Agency: VALVE,VENT. 1 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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