PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20RCap,valve

Psg California, Llc Div Dover Corporation · NSN 4820-01-118-8490 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-118-8490 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-118-8490. Primary manufacturer part number: 20R.
Features
  • Cap,valve — FSC 4820
  • Material: STEEL CORROSION RESISTING
  • 2 verified cross-references
  • Primary manufacturer: Psg California, Llc Div Dover Corporation
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Cap,valve, cataloged under National Stock Number 4820-01-118-8490, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Psg California, Llc Div Dover Corporation. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-118-8490
Primary Part Number20R
Item NameCap,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPsg California, Llc Div Dover Corporation
StatusACTIVE
MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
2640-00-158-5617938-696 INTERCHANGEABLE
Flap,inner Tube,pneumatic Tire
Specialty Tires & Wheels
5120-00-889-205020R INTERCHANGEABLE
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Petersen Mfg Co Inc
4510-01-027-4739 INTERCHANGEABLE
Valve,float,water Closet Tank
3040-01-294-863620-R INTERCHANGEABLE
Shaft,shouldered
Thermal Engineering Co a Div of Sea Kay Co Inc
5120-01-431-626120R INTERCHANGEABLE
Clamp,plier
Stanley Tools Div of Stanley Works
9905-01-461-775320-R INTERCHANGEABLE
Reflector,indicating,clearance
J. W. Speaker Corporation Dba Jw Speaker Corp
4320-01-664-118820RSB INTERCHANGEABLE
Pump Unit,centrifugal
Itt Rule Industries Inc Danforth Div
4820-01-690-1047 INTERCHANGEABLE
Cap,valve
Cross-Reference Index
Part NumberManufacturer
20R Psg California, Llc Div Dover Corporation (USA)
M-8-B-20R Psg California, Llc Div Dover Corporation (USA)
Related Parts
2640-00-158-5617INTERCHANGEABLE
FLAP,INNER TUBE,PNEUMATIC TIRE
938-696
5120-00-889-2050INTERCHANGEABLE
PLIERS,CHAIN WRENCH
20R
4510-01-027-4739INTERCHANGEABLE
VALVE,FLOAT,WATER CLOSET TANK
3040-01-294-8636INTERCHANGEABLE
SHAFT,SHOULDERED
20-R
5120-01-431-6261INTERCHANGEABLE
CLAMP,PLIER
20R
9905-01-461-7753INTERCHANGEABLE
REFLECTOR,INDICATING,CLEARANCE
20-R
4320-01-664-1188INTERCHANGEABLE
PUMP UNIT,CENTRIFUGAL
20RSB
4820-01-690-1047INTERCHANGEABLE
CAP,VALVE

Frequently Asked Questions

What is NSN 4820-01-118-8490?

NSN 4820-01-118-8490 is a Cap,valve, manufactured by Psg California, Llc Div Dover Corporation, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-118-8490?

NSN 4820-01-118-8490 has 2 cross-referenced part numbers: 20R (Psg California, Llc Div Dover Corporation), M-8-B-20R (Psg California, Llc Div Dover Corporation).

What NSN replaces 4820-01-118-8490?

There are 8 known substitutes for 4820-01-118-8490: 2640-00-158-5617, 5120-00-889-2050, 4510-01-027-4739 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20R?

Key specifications for 20R: End Item Identification: WILDEN PUPM M8; Material: STEEL CORROSION RESISTING; Special Features: TOP PUMP. 3 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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