The Sloan Royal Flush Valve is one of the most popular flush valves in use all over the world today. There may be times when yours is not working properly. Here are five troubleshooting tips that may help you the next time you encounter a problem:
1) If you’re experiencing a valve that closes off immediately, you may have a ruptured or damaged diaphragm, or the by-pass orifice may be enlarged because of corrosion or some other damage. Either install a new diaphragm or a new inside parts kit to correct the problem.
2) Sometimes the valve might not flush at all. Check to make sure that the control stop or the main valve supply haven’t been mistakenly closed. If they have, open them. General wear and tear can be expected over time, so if your valve isn’t flushing, it could be because the handle assembly is worn out. To fix it, simply replace the handle assembly, or use a handle repair kit. The same goes for the relief valve. If it has become damaged over time, it needs to be replaced.
3) If the length of the flush is too short, there are several possible causes. First, the diaphragm assembly and guide assembly might not be hand tight. If this is the case, screw the two assemblies hand tight. Another cause might be that the by-pass orifice is enlarged from corrosion or damage. To fix, simply install a new diaphragm or inside parts kit. If it’s a closet flush valve that is short-flushing, check to see if a black urinal relief valve has been mistakenly installed. If so, replace with a white closet relief valve. Finally, you may have a low-consumption kit installed in a non-low consumption fixture. To fix, just replace with the proper inside parts kit.
4) Sometimes, the duration of a flush can be too long. One reason can be that the relief valve is not seating properly. Also, the by-pass orifice may be clogged by foreign material or closed by an invisible gelatinous film from over treated water. If one of these is the case, disassemble the working parts and wash thoroughly. Be aware that the size of the orifice in the by-pass is of UTMOST importance in the proper metering of water into the upper chamber of the valve. Do not enlarge or damage this orifice. If cleansing does not correct the problem, replace the inside kit. Another reason for a long flush could be that the line pressure has dropped and is not sufficient to force the relief valve to seat. To resolve that problem, shut off all control stops until pressure has been restored, then open them again. Finally, a white closet relief valve may have been installed instead of a black urinal relief valve. To fix, simply install a black urinal relief valve.
5) Lastly, there may be times when there is an insufficient volume of water to adequately siphon the fixture. The first thing to do is make sure that the control stop is open far enough. Another cause could be that you have a urinal parts kit installed in a closet valve. In that case, simply install the proper parts kit. You may also have a low-consumption valve installed on a non-low consumption fixture. Again, simply install the proper parts to correct the problem. If you have a water saver kit installed in an old, non-water saving bowl, that could cause insufficient water volume as well. Position the refill head on the guide so that side one is in the up position. Finally, there may be inadequate volume or pressure at the water supply. If no gauges are available to properly measure the supply pressure or volume of water at the valve, then completely remove the entire diaphragm assembly and open the control stop to allow water to pass through the empty valve. If the supply is adequate to supply the fixture in this manner, then the restriction ring (A-164 on plastic guides) should be removed from the bottom of the guide to provide additional flow. If additional flow is still required, the refill head (A-170) may be replaced with a brass low flow refill head (A-85). Should neither of these steps prove satisfactory, then steps should be taken to increase the pressure and/or supply.
For more tips on repairing Sloan flush valves, give us a call at 800-442-6622. You’ll talk to a knowledgeable human, not a machine! (During business hours, of course.) We promise!
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