PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5995-G501Valve,purge

Howell Laboratories Inc Dba Howell Laboratories Inc · NSN 4820-01-387-9550 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-387-9550 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-387-9550. Primary manufacturer part number: 5995-G501.
Features
  • Valve,purge — FSC 4820
  • General Characteristics Item Description: STAINLESS STEEL; LEFT
  • 5 verified cross-references
  • Primary manufacturer: Howell Laboratories Inc Dba Howell Laboratories Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,purge, cataloged under National Stock Number 4820-01-387-9550, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-387-9550
Primary Part Number5995-G501
Item NameValve,purge
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHowell Laboratories Inc Dba Howell Laboratories Inc
StatusACTIVE
General Characteristics Item DescriptionSTAINLESS STEEL; LEFT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5950-00-032-0416663290 INTERCHANGEABLE
Transformer,power
Lockheed Martin Corporation Div Rms - Mitchel Field
5930-00-253-74500481214 INTERCHANGEABLE
Switch,push-Pull
Agco Corp Parts Opn
5940-00-834-1638 INTERCHANGEABLE
Terminal Board
4820-00-858-0476599-5 INTERCHANGEABLE
Cock,poppet Drain
Lockheed Martin Corp
5360-00-966-99065995-1 INTERCHANGEABLE
Spring,helical,extension
The Boeing Company Div Legacy Am&m
1680-01-134-03225995 INTERCHANGEABLE
Bracket,inboard Detector
Meggitt Safety Systems Inc
5998-01-152-47751488831-000 INTERCHANGEABLE
Extender Card,electronic Test
Lockheed Martin Corporation Div Rotary and Mission Systems
3460-01-479-15795995 INTERCHANGEABLE
Clamp,parallel,machinist's
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
5360-01-617-13535995 INTERCHANGEABLE
Spring,helical,compression
Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp.
Cross-Reference Index
Part NumberManufacturer
5725 ITEM 17 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
5995 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
4820PL0851437 Jednolity Indeks Materialowy - Uniform Material Index (POL)
5995-G501 PRIMARY Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
5995D-G501 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
Related Parts
5950-00-032-0416INTERCHANGEABLE
TRANSFORMER,POWER
663290
5930-00-253-7450INTERCHANGEABLE
SWITCH,PUSH-PULL
0481214
5940-00-834-1638INTERCHANGEABLE
TERMINAL BOARD
4820-00-858-0476INTERCHANGEABLE
COCK,POPPET DRAIN
599-5
5360-00-966-9906INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
5995-1
1680-01-134-0322INTERCHANGEABLE
BRACKET,INBOARD DETECTOR
5995
5998-01-152-4775INTERCHANGEABLE
EXTENDER CARD,ELECTRONIC TEST
1488831-000
3460-01-479-1579INTERCHANGEABLE
CLAMP,PARALLEL,MACHINIST'S
5995
5360-01-617-1353INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5995

Frequently Asked Questions

What is NSN 4820-01-387-9550?

NSN 4820-01-387-9550 is a Valve,purge, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-387-9550?

NSN 4820-01-387-9550 has 5 cross-referenced part numbers: 5725 ITEM 17 (Howell Laboratories Inc Dba Howell Laboratories Inc), 5995 (Howell Laboratories Inc Dba Howell Laboratories Inc), 4820PL0851437 (Jednolity Indeks Materialowy - Uniform Material Index), 5995-G501 (Howell Laboratories Inc Dba Howell Laboratories Inc), 5995D-G501 (Howell Laboratories Inc Dba Howell Laboratories Inc).

What NSN replaces 4820-01-387-9550?

There are 9 known substitutes for 4820-01-387-9550: 5950-00-032-0416, 5930-00-253-7450, 5940-00-834-1638 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5995-G501?

Key specifications for 5995-G501: General Characteristics Item Description: STAINLESS STEEL; LEFT. 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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