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- Do I have a gravity-fed, rim-jet design toilet? Or do I have a gravity-fed, siphon jet toilet?
I was enrolled in an online plumbing course at Stratford University. My plumbing textbook lists four types of residential toilets: 1# upflush toilets 2# pressure assisted toilets 3# gravity-fed, rim jet toilets and 4# gravity-fed, siphon-jet toilets.
I know my toilet is not an upflush toilet because my toilet is not below the sewage line, and my toilet does not have a grinder and a pump next to it to propel waste upwards. I am about 99% sure that my toilet is not a pressure assisted toilet because I don't see any pump inside the tank of the toilet. All I see inside the toilet are the refill valve, the overflow tube, and the flapper. Here is a photograph of the inside of my toilet tank:
I think that my toilet is probably a gravity-fed, siphon jet toilet, but I don't know for sure. I think it is also possible that my toilet is a gravity-fed, rim-jet toilet.
Here is a photograph of the bottom of my toilet bowl:
There are two holes in the bottom of my toilet bowl. The hole on the right in the photograph is the hole that the waste goes through on its way to the p-trap and the building drain and then to the building sewer. The hole on the right in the photograph is a lot bigger than the hole on the left in the photograph. The hole in the right of my photograph is at the back of the toilet (closer to the tank of the toilet). If a person was peeing into the toilet, the hole on the left in the photograph is closer to where that person would stand. The existence of that (little) hole on the left in the photograph makes me think that I probably have a gravity-fed, siphon jet toilet. I don't think that my toilet is a gravity-fed rim-jet toilet because I don't think that gravity-fed, rim jet toilets have that little hole on the bottom for water to go through. I think that the only hole in the toilet bowl of a gravity-fed rim jet toilet is the hole that waste goes through on its way to the P-trap and to the building drain and then the building sewer. It's my understanding that when a gravity-fed, rim jet toilet is flushed, 100% of the water goes from the tank to the openings under the rim of the toilet, not through a little hole in the bottom of the toilet bowl.
Is my toilet a gravity-fed, siphon-jet toilet?
I know my toilet is not an upflush toilet because my toilet is not below the sewage line, and my toilet does not have a grinder and a pump next to it to propel waste upwards. I am about 99% sure that my toilet is not a pressure assisted toilet because I don't see any pump inside the tank of the toilet. All I see inside the toilet are the refill valve, the overflow tube, and the flapper. Here is a photograph of the inside of my toilet tank:
I think that my toilet is probably a gravity-fed, siphon jet toilet, but I don't know for sure. I think it is also possible that my toilet is a gravity-fed, rim-jet toilet.
Here is a photograph of the bottom of my toilet bowl:
There are two holes in the bottom of my toilet bowl. The hole on the right in the photograph is the hole that the waste goes through on its way to the p-trap and the building drain and then to the building sewer. The hole on the right in the photograph is a lot bigger than the hole on the left in the photograph. The hole in the right of my photograph is at the back of the toilet (closer to the tank of the toilet). If a person was peeing into the toilet, the hole on the left in the photograph is closer to where that person would stand. The existence of that (little) hole on the left in the photograph makes me think that I probably have a gravity-fed, siphon jet toilet. I don't think that my toilet is a gravity-fed rim-jet toilet because I don't think that gravity-fed, rim jet toilets have that little hole on the bottom for water to go through. I think that the only hole in the toilet bowl of a gravity-fed rim jet toilet is the hole that waste goes through on its way to the P-trap and to the building drain and then the building sewer. It's my understanding that when a gravity-fed, rim jet toilet is flushed, 100% of the water goes from the tank to the openings under the rim of the toilet, not through a little hole in the bottom of the toilet bowl.
Is my toilet a gravity-fed, siphon-jet toilet?
