PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15573Seat,valve

Haskel International, Llc Dba Haskel International, Llc · NSN 4820-01-235-8544 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-235-8544 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-235-8544. Primary manufacturer part number: 15573.
Features
  • Seat,valve — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Haskel International, Llc Dba Haskel International, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-235-8544, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Haskel International, Llc Dba Haskel International, Llc. This item has 4 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 NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersHaskel International, Llc Dba Haskel International, Llc (CAGE 81400)
Technical Specifications
ParameterValue
NSN4820-01-235-8544
Primary Part Number15573
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHaskel International, Llc Dba Haskel International, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6145-00-335-13364016206-0701 INTERCHANGEABLE
Braid,wire
Raytheon Company Dba Raytheon Co
5360-00-382-8168 INTERCHANGEABLE
Spring,helical,torsion
2915-00-817-445315573 INTERCHANGEABLE
Shaft and Seal Assy
Williams International Co., L.l.c.
4310-00-860-0663200122K PIECE NUMBER 151 INTERCHANGEABLE
Ring,piston
Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
3030-01-037-8351 INTERCHANGEABLE
Belt,v
3040-01-198-29381570 INTERCHANGEABLE
Guide,piston
Lawler Manufacturing Company, Inc.
4460-01-267-8979 INTERCHANGEABLE
Filter,air,electrostatic
5355-01-370-852766-21-75-3 INTERCHANGEABLE
Knob
Power Dynamics Inc
4610-01-388-3439 INTERCHANGEABLE
Detector,ion
5940-01-564-54183420-005N INTERCHANGEABLE
Terminal,lug
Texas Instruments Inc
Cross-Reference Index
Part NumberManufacturer
15573 Haskel International, Llc Dba Haskel International, Llc (USA)
27746-2 Haskel International, Llc Dba Haskel International, Llc (USA)
15570 ITEM 5 Haskel International, Llc Dba Haskel International, Llc (USA)
15570 Haskel International, Llc Dba Haskel International, Llc (USA)
Related Parts
6145-00-335-1336INTERCHANGEABLE
BRAID,WIRE
4016206-0701
5360-00-382-8168INTERCHANGEABLE
SPRING,HELICAL,TORSION
2915-00-817-4453INTERCHANGEABLE
SHAFT AND SEAL ASSY
15573
4310-00-860-0663INTERCHANGEABLE
RING,PISTON
200122K PIECE NUMBER 151
3030-01-037-8351INTERCHANGEABLE
BELT,V
3040-01-198-2938INTERCHANGEABLE
GUIDE,PISTON
1570
4460-01-267-8979INTERCHANGEABLE
FILTER,AIR,ELECTROSTATIC
5355-01-370-8527INTERCHANGEABLE
KNOB
66-21-75-3
4610-01-388-3439INTERCHANGEABLE
DETECTOR,ION
5940-01-564-5418INTERCHANGEABLE
TERMINAL,LUG
3420-005N
1375-01-715-9413INTERCHANGEABLE
DEMOLITION KIT,BREACHING SYSTEM,
15570
1375-01-715-9430INTERCHANGEABLE
DEMOLITION KIT,BREACHING SYSTEM,
15573

Frequently Asked Questions

What is NSN 4820-01-235-8544?

NSN 4820-01-235-8544 is a Seat,valve, manufactured by Haskel International, Llc Dba Haskel International, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-235-8544?

NSN 4820-01-235-8544 has 4 cross-referenced part numbers: 15573 (Haskel International, Llc Dba Haskel International, Llc), 27746-2 (Haskel International, Llc Dba Haskel International, Llc), 15570 ITEM 5 (Haskel International, Llc Dba Haskel International, Llc), 15570 (Haskel International, Llc Dba Haskel International, Llc).

What NSN replaces 4820-01-235-8544?

There are 12 known substitutes for 4820-01-235-8544: 6145-00-335-1336, 5360-00-382-8168, 2915-00-817-4453 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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