Sloan Royal Water Closet Diaphragm Assembly (1.28 GPF) for Royal Flushometers vs Replacement flush valve cartridge kit for Flushmate 503H

Overall winner: Replacement flush valve cartridge kit for Flushmate 503H

Key Differences

Duravit Flushmate (A) offers adjustable gallons-per-flush and broader use across pressure-assisted Flushmate systems, while Sloan Royal (B) uses PERMEX synthetic rubber and dual-filtered fixed bypass designed specifically for Royal Flushometers. Choose A if you need a replacement valve cartridge for pressure-assisted toilets and adjustable flow; choose B if you have a Royal Flushometer and require a diaphragm assembly with PERMEX material

Sloan Royal Water Closet Diaphragm Assembly (1.28 GPF) for Royal Flushometers

Sloan Royal Water Closet Diaphragm Assembly (1.28 GPF) for Royal Flushometers

Sloan • ★ 3.7/5 • Mid-Range

Replacement diaphragm assembly for Sloan Royal flushometers with PERMEX rubber and dual-filtered bypass. Designed to ensure consistent flush amounts and reduce water waste. Customer note: high-quality fit and good value

Pros

  • PERMEX synthetic rubber diaphragm
  • Dual-filtered fixed bypass
  • consistent flushing amounts
  • designed as replacement for Royal Flushometers

Cons

  • compatibility limited to Royal line
  • mentions 1.28 gpf variant; other variants vary
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Replacement flush valve cartridge kit for Flushmate 503H

Replacement flush valve cartridge kit for Flushmate 503H

Duravit • ★ 3.9/5 • Mid-Range

Replacement flush valve cartridge kit designed for Flushmate systems, delivering regulated water flow for consistent performance. Includes duckbill valve, filter screen & lower supply filter for easy maintenance. Customers note ease of installation and clear instructions

Pros

  • regulated water flow for consistent flush
  • includes duckbill valve, filter screen & lower supply filter
  • easy installation with clear instructions
  • durable corrosion-resistant materials

Cons

  • mixed durability and leak-prevention feedback
  • some failures reported after months of use
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Head-to-Head

CriteriaWinner
Price Tie
Durability Sloan
Versatility Duravit
User Reviews Duravit