FluidMaster 9" Dual Flush Toilet Syphon Compact PROSY090 WC Valve WRAS

PRO compact dual flush toilet syphon in 9 Inch size made by Fluidmaster. This PROSY090 WC flush siphon for toilet tank comes with variable flush volumes, internal overflow and leak-free component and 2.5" C-Link.
Toilet syphon is suitable for majority of lever operated toilet cisterns with 1 1/2" BSP toilet cistern outlet fittings. This toilet siphon replacement unit is fully WRAS approved and it features internal overflow protection system and anti leak components.
9 inch dual flush syphon has variable nominal full flushing volumes from 6 litres to 9 litres and partial ("half") flush by holding the toilet cistern lever down until flush is complete.
The overall dimensions of the WC syphon are: 270mm height (from top to the beginning of cistern thread fitting), 190mm width, 95mm depth.

Main advantages of the Fluidmaster Dual Flush Toilet Siphon Compact PRO Series:
- Variable flushing volumes;
- Capable of full and partial flush;
- Internal overflow;
- Compact design also fits modern smaller cisterns.

How the Dual Flush operation for this syphon works.
The full flush volume is achieved by flushing the WC In the normal fashion of fully depressing the lever and immediately releasing once the flush has started.
The short flush volume Is achieved by fully depressing the handle in the normal fashion and holding the handle in the down position until the flushing cycle has finished.

Internal Overflow
If In the unlikely event that your filling valve fails open, all syphons feature an internal overflow which will be able to cope with up to 351/min of excess water.
As the water level rises so will the level of water within the syphon, until it reaches the "Spillover" point. At this point the water within the syphon will cascade down the down tube and into the pan preventing any further increase in the height of the water within the cistern. When choosing a syphon please make sure the bottom of the coloured cap (the "Spillover" point, point P) Is lower then any existing exit point within the cistern, i.e. lever handle / side lever / side inlet internal overflow and cistern rim.

Fitting the PRO Series Dual Flush Syphon:

STAGE 1 Pre Installation
1. Turn off water supply to cistern and remove cistern lid.
2. While still full, mark the normal water level on the inside of the cistern.
3. Flush the cistern and remove all remaining water with a sponge or cloth.
4. Disconnect the "C" link from the flushing lever and save for use again if required.
5. Remove old syphon.

STAGE 2 Fitting the Syphon

For high and low level cisterns
1. Undo the coupling nut below the cistern and undo the syphon backnut.
2. Take the old syphon unit out of the cistern and fit new syphon ensuring that the rubber washer Is on the inside of the cistern.
3. Hand tighten the backnut and tighten a further quarter of a turn using suitable grips.
4. Refit the "C" link.
5. Refit the flush-pipe sealing washer and coupling nut.

For close coupled cisterns
1. Disconnect the water supply from the tailpipe of the filling valve.
2. Undo the wingnuts at the rear of the WC pan, undo the wall fixing screws inside the cistern.
3. Carefully lift the cistern from the WC pan.
4. Remove the large "doughnut" shaped washer, then undo the syphon backnut.
5. Take the old syphon unit out of the cistern during which it may be necessary to remove some or all of the filling valve assembly.
6. Fit the new syphon into the cistern ensuring that the rubber washer is on the inside of the cistern.
7. Hand tighten the backnut and tighten a further quarter of a turn using suitable grips.
8. Place a new doughnut washer on the thread and carefully reposition the cistern on the WC pan.
9. Replace the wall fixing screws and the wingnuts.
10. Refit the "C" link.
11. Reconnect the water supply to the filling valve.