PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16-2PValve,regulating,fluid Pressure

Watts Regulator Company · NSN 4820-00-020-5057 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-020-5057 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-020-5057. Primary manufacturer part number: 16-2P.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Flow Control Device: STEM AND INTEGRAL DISK
  • Filter: NOT INCLUDED
  • Valve Loading Method: SPRING
  • End Connection Quantity: 4
  • Material: STEEL CORROSION RESISTING STEM
  • Temp Rating: 0.0 FAHRENHEIT MINIMUM AND 120.0 FAHRENHEIT MAXIMUM DEGF
  • Material: ZINC BODY
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Stem construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-020-5057, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Watts Regulator Company. Government technical data includes 8 verified specifications, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-020-5057
Primary Part Number16-2P
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWatts Regulator Company
StatusACTIVE
Flow Control DeviceSTEM AND INTEGRAL DISK
FilterNOT INCLUDED
Valve Loading MethodSPRING
End Connection Quantity4
MaterialSTEEL CORROSION RESISTING STEM
Temp Rating0.0 FAHRENHEIT MINIMUM AND 120.0 FAHRENHEIT MAXIMUM DEGF
MaterialZINC BODY
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND STEEL CORROSION RESISTING FLOW CONTROL DEVICE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4320-00-146-475610595 INTERCHANGEABLE
Rod Assembly,piston
Rps-Fl, Inc. Dba Rps Inc
Cross-Reference Index
Part NumberManufacturer
16-2P PRIMARY Watts Regulator Company (USA)
Related Parts
4320-00-146-4756INTERCHANGEABLE
ROD ASSEMBLY,PISTON
10595

Frequently Asked Questions

What is NSN 4820-00-020-5057?

NSN 4820-00-020-5057 is a Valve,regulating,fluid Pressure, manufactured by Watts Regulator Company, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-020-5057?

NSN 4820-00-020-5057 has 1 cross-referenced part number: 16-2P (Watts Regulator Company).

What NSN replaces 4820-00-020-5057?

There is 1 known substitute for 4820-00-020-5057: 4320-00-146-4756. Verify interchangeability with system specifications before substitution.

What are the specifications of 16-2P?

Key specifications for 16-2P: Flow Control Device: STEM AND INTEGRAL DISK; Filter: NOT INCLUDED; Valve Loading Method: SPRING; End Connection Quantity: 4. 8 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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