PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1571Seat,valve

Lawler Manufacturing Company, Inc. · NSN 4820-01-198-2841 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-198-2841 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-198-2841. Primary manufacturer part number: 1571.
Features
  • Seat,valve — FSC 4820
  • Material: COPPER ALLOY OVERALL
  • 3 verified cross-references
  • Primary manufacturer: Lawler Manufacturing Company, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-198-2841, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lawler Manufacturing Company, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). 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.

Technical Specifications
ParameterValue
NSN4820-01-198-2841
Primary Part Number1571
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2805-00-119-0318 INTERCHANGEABLE
Ring,piston
5360-00-152-0334239627 INTERCHANGEABLE
Spring,helical,compression
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5965-00-222-0282H32A/U INTERCHANGEABLE
Headset,electrical
Joint Electronics Type Designation System
5945-00-396-2697142364HA INTERCHANGEABLE
Relay,electromagnetic
Navistar Intl Corp Truck Br Ohio Plant
5330-00-399-69411571 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
3040-00-457-8703 INTERCHANGEABLE
Pawl
5905-00-593-82541472230 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5905-00-867-09231571 INTERCHANGEABLE
Resistor Set,matched
Ballantine Laboratories Inc
5930-00-869-5931 INTERCHANGEABLE
Switch,push
5360-00-900-5161 INTERCHANGEABLE
Spring,by-Pass
Cross-Reference Index
Part NumberManufacturer
1571 PRIMARY Lawler Manufacturing Company, Inc. (USA)
71975 PIECE 22 Lawler Manufacturing Company, Inc. (USA)
71975 Lawler Manufacturing Company, Inc. (USA)
Related Parts
2805-00-119-0318INTERCHANGEABLE
RING,PISTON
5360-00-152-0334INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
239627
5965-00-222-0282INTERCHANGEABLE
HEADSET,ELECTRICAL
H32A/U
5945-00-396-2697INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
142364HA
5330-00-399-6941INTERCHANGEABLE
GASKET
1571
3040-00-457-8703INTERCHANGEABLE
PAWL
5905-00-593-8254INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
1472230
5905-00-867-0923INTERCHANGEABLE
RESISTOR SET,MATCHED
1571
5930-00-869-5931INTERCHANGEABLE
SWITCH,PUSH
5360-00-900-5161INTERCHANGEABLE
SPRING,BY-PASS
6105-00-995-4636INTERCHANGEABLE
MOTOR-TACHOMETER GENERATOR
MG10-1236-304
4330-01-152-1090INTERCHANGEABLE
FILTER,DENSITY
36-5510

Frequently Asked Questions

What is NSN 4820-01-198-2841?

NSN 4820-01-198-2841 is a Seat,valve, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-198-2841?

NSN 4820-01-198-2841 has 3 cross-referenced part numbers: 1571 (Lawler Manufacturing Company, Inc.), 71975 PIECE 22 (Lawler Manufacturing Company, Inc.), 71975 (Lawler Manufacturing Company, Inc.).

What NSN replaces 4820-01-198-2841?

There are 12 known substitutes for 4820-01-198-2841: 2805-00-119-0318, 5360-00-152-0334, 5965-00-222-0282 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1571?

Key specifications for 1571: Material: COPPER ALLOY OVERALL. 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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