PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20197Lap Assembly,valve

Pneudraulics, Inc. · NSN 4820-01-239-9970 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-239-9970 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-239-9970. Primary manufacturer part number: 20197.
Features
  • Lap Assembly,valve — FSC 4820
  • General Characteristics Item Description: CONSISTS OF P/N 20199 SPOOL AND P/N 20198 SLEEVE
  • 1 verified cross-reference
  • Primary manufacturer: Pneudraulics, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Lap Assembly,valve, cataloged under National Stock Number 4820-01-239-9970, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Pneudraulics, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). 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
NSN4820-01-239-9970
Primary Part Number20197
Item NameLap Assembly,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPneudraulics, Inc.
StatusACTIVE
General Characteristics Item DescriptionCONSISTS OF P/N 20199 SPOOL AND P/N 20198 SLEEVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4310-00-168-871400350-S4902-595811PC197 INTERCHANGEABLE
Guard,valve Strip
Naval Ship Systems Command
4820-00-759-5386A7917-005 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-050-978107413001103 INTERCHANGEABLE
Guide,valve Stem
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5910-01-095-4000T370C685M010AS INTERCHANGEABLE
Capacitor,fixed,electrolytic
Kemet Electronics Corporation
4820-01-136-201420197BS51SS INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
6550-01-682-431120197 INTERCHANGEABLE
Control Set,blood Chemistry
Quidel Corp
6150-01-702-273520197 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Amerex Corporation Dba Amerex Corp
Cross-Reference Index
Part NumberManufacturer
20197 PRIMARY Pneudraulics, Inc. (USA)
Related Parts
4310-00-168-8714INTERCHANGEABLE
GUARD,VALVE STRIP
00350-S4902-595811PC197
4820-00-759-5386INTERCHANGEABLE
DISK,VALVE
A7917-005
4820-01-050-9781INTERCHANGEABLE
GUIDE,VALVE STEM
07413001103
5910-01-095-4000INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
T370C685M010AS
4820-01-136-2014INTERCHANGEABLE
VALVE,SAFETY RELIEF
20197BS51SS
6550-01-682-4311INTERCHANGEABLE
CONTROL SET,BLOOD CHEMISTRY
20197
6150-01-702-2735INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
20197

Frequently Asked Questions

What is NSN 4820-01-239-9970?

NSN 4820-01-239-9970 is a Lap Assembly,valve, manufactured by Pneudraulics, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-239-9970?

NSN 4820-01-239-9970 has 1 cross-referenced part number: 20197 (Pneudraulics, Inc.).

What NSN replaces 4820-01-239-9970?

There are 7 known substitutes for 4820-01-239-9970: 4310-00-168-8714, 4820-00-759-5386, 4820-01-050-9781 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20197?

Key specifications for 20197: End Item Identification: USED ON NSN 4820011837184 VALVE,B-1B ACFT; General Characteristics Item Description: CONSISTS OF P/N 20199 SPOOL AND P/N 20198 SLEEVE. 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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