PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

EV-377Valve,safety Relief

Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems · NSN 4820-01-220-6407 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-220-6407 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-220-6407. Primary manufacturer part number: EV-377.
Features
  • Valve,safety Relief — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-220-6407, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,safety Relief
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersIntegrated Distribution Systemslimited Partnershipdba Waterous Power Systems (CAGE 35683)
Technical Specifications
ParameterValue
NSN4820-01-220-6407
Primary Part NumberEV-377
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerIntegrated Distribution Systemslimited Partnershipdba Waterous Power Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5220-00-111-8324251-01 INTERCHANGEABLE
Gaging Member,comparator,air Plu
Hamilton Sundstrand Corporation
5133-00-189-9323 INTERCHANGEABLE
Drill,twist
5915-00-197-4753505527-2 INTERCHANGEABLE
Filter,band Pass
L3harris Technologies, Inc. Dba Harris Corporation
3433-00-223-74832-5-101 INTERCHANGEABLE
Tip,cutting Torch
Victor Equipment Co
2805-00-382-8021028379 INTERCHANGEABLE
Connecting Rod,piston
Caterpillar Inc Div Caterpillar Defense
5930-00-596-81157615K4 INTERCHANGEABLE
Switch,toggle
Eaton Electrical Inc. Dba Cuttler Hmmer Cmrcl Cntrls Div Div Vehicle Controls Business Unit
3020-00-962-018325101-1 INTERCHANGEABLE
Gear,spur
Solar Turbines Incorporated Dba Solar Turbines Incorporated
6220-01-167-77812510-1 INTERCHANGEABLE
Light,cockpit,aircraft
Aerospace Lighting Corporation
4720-01-219-5614S085-25-2707 INTERCHANGEABLE
Hose Assembly,nonmetallic
Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems
5935-01-286-130625101 INTERCHANGEABLE
Connector
Vaponics Inc
Cross-Reference Index
Part NumberManufacturer
25101 ITEM 12 Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems (CAN)
EV-377 PRIMARY Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems (CAN)
25101 Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems (CAN)
Related Parts
5220-00-111-8324INTERCHANGEABLE
GAGING MEMBER,COMPARATOR,AIR PLU
251-01
5133-00-189-9323INTERCHANGEABLE
DRILL,TWIST
5915-00-197-4753INTERCHANGEABLE
FILTER,BAND PASS
505527-2
3433-00-223-7483INTERCHANGEABLE
TIP,CUTTING TORCH
2-5-101
2805-00-382-8021INTERCHANGEABLE
CONNECTING ROD,PISTON
028379
5930-00-596-8115INTERCHANGEABLE
SWITCH,TOGGLE
7615K4
3020-00-962-0183INTERCHANGEABLE
GEAR,SPUR
25101-1
6220-01-167-7781INTERCHANGEABLE
LIGHT,COCKPIT,AIRCRAFT
2510-1
4720-01-219-5614INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
S085-25-2707
5935-01-286-1306INTERCHANGEABLE
CONNECTOR
25101
5945-01-374-5445INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
2510-1
5365-01-495-0659INTERCHANGEABLE
SHIM
3088A121

Frequently Asked Questions

What is NSN 4820-01-220-6407?

NSN 4820-01-220-6407 is a Valve,safety Relief, manufactured by Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-220-6407?

NSN 4820-01-220-6407 has 3 cross-referenced part numbers: 25101 ITEM 12 (Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems), EV-377 (Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems), 25101 (Integrated Distribution Systemslimited Partnershipdba Waterous Power Systems).

What NSN replaces 4820-01-220-6407?

There are 12 known substitutes for 4820-01-220-6407: 5220-00-111-8324, 5133-00-189-9323, 5915-00-197-4753 and 9 more. Verify interchangeability with system specifications before substitution.

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