More Views

Siamp Optima 49 Dual Flush Cistern Valve


Quick Overview

  • Can be installed into plastic or ceramic cisterns
  • Push button: dual flush
  • Actuation effort below 20 Newton
  • For lid holes ranging from 16 to 50mm, with or without collar depending on the diameter
  • Button off-center +/- 15mm
  • Stirrup: adjustable in increments of 12 mm
  • Overflow can be cut in increments of 4mm
  • Adjustable small flush, from 2l to 4.5l
  • Adjustable deadwater level
  • High flush rate of 3.5l/s
  • Foam pan seal supplied for compensating pan irregularity


Technical Details
  • Lid hole: Ø16 - Ø50mm
  • Drainage hole: Ø58 - Ø72mm
  • Height with collar: 282 - 430mm (Lid hole Ø16 - Ø38mm)
  • Height without collar: 300 - 448mm (Lid hole Ø39 - Ø42mm)


Write Your Own Review

Only registered users can write reviews. Please, log in or register

Product Tags

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.


Delivery estimate.

Please enter the required quantity and delivery postcode.

This product appears in the following categories:  Toilet Valves & Syphons

The pictures above are for illustration purposes only, the actual product may vary. For more information about a product please contact us.