PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

WWP541-1ABreaker,vacuum,flush Valve

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 4510-00-277-1018 · FSC 4510 · No Item Name Available
Verified by PartsTable
NSN 4510-00-277-1018 — this item is cataloged by the U.S. Government under National Stock Number 4510-00-277-1018. Primary manufacturer part number: WWP541-1A.
Features
  • Breaker,vacuum,flush Valve — FSC 4510
  • Material: COPPER ALLOY
  • Nominal Overall Length: 3.500 INCHES IN
  • 2 verified cross-references
  • Primary manufacturer: Federal Specifications Promulgated by General Services Administration Washington DC
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy construction
General Description

The Breaker,vacuum,flush Valve, cataloged under National Stock Number 4510-00-277-1018, is classified within Federal Supply Class 4510 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 2 verified specifications, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4510-00-277-1018
Primary Part NumberWWP541-1A
Item NameBreaker,vacuum,flush Valve
FSC / FSG4510 / 45 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
MaterialCOPPER ALLOY
Nominal Overall Length3.500 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4510-00-278-9537 INTERCHANGEABLE
Urinal,stationary
Cross-Reference Index
Part NumberManufacturer
WWP541-1A Federal Specifications Promulgated by General Services Administration Washington DC (USA)
WW-P-541E/GEN Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
4510-00-278-9537INTERCHANGEABLE
URINAL,STATIONARY

Frequently Asked Questions

What is NSN 4510-00-277-1018?

NSN 4510-00-277-1018 is a Breaker,vacuum,flush Valve, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 4510 (No Item Name Available). Status: active.

What are the part numbers for NSN 4510-00-277-1018?

NSN 4510-00-277-1018 has 2 cross-referenced part numbers: WWP541-1A (Federal Specifications Promulgated by General Services Administration Washington DC), WW-P-541E/GEN (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 4510-00-277-1018?

There is 1 known substitute for 4510-00-277-1018: 4510-00-278-9537. Verify interchangeability with system specifications before substitution.

What are the specifications of WWP541-1A?

Key specifications for WWP541-1A: Special Features: CHROME PLATED; END CONNECTIONS NOT IDENTICAL THD FEMALE TYPE 1.5 IN. SIZE NPT, COUPLING NUT SLIP JOINT TYPE IN; Material: COPPER ALLOY; Nominal Overall Length: 3.500 INCHES IN. 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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