Hello all, thanks for the add.
I hope this post is not duplicated and allowed. I do not operate a car wash, but this forum is the only place I've found where the 4040 is discussed. I have multiple issues with my residential well water, sediment, bacteria, methane, and salt intrusion. I have a fix in place for everything but the salt. I installed a BW 4040 membrane, and I have a couple questions. First, after flushing I began closing the wastewater valve and it back pressured my system to the point it broke a threaded PVC coupling and blew out a section of the PVC pipe. I have a 200psi gauge on the supply just upstream of the RO and the gauge was buried. I was running a boost pump at the time and supplying 120psi before I began closing the waste valve. I disconnected the boost pump electrically and fixed my broken connections and opened the water supply again supplying only well pressure (40-45psi), it immediately back pressured and buried the needle again. I removed the membrane and flowed water through the housing and everything worked as it should. Secondly the flow is pretty low. I have the wastewater open enough to hold pressure around 110psi, but the clean water flow is less than a gallon per minute. I haven't measured the waste flow as of yet.
My thought is that my flow rate being supplied to the membrane through 1" PVC is too much and is causing the back pressure. As a result, I am sending too much water through the waste stream which is why my clean flow is so low. So, here's my question, is there a way I can reduce flow to preserve my plumbing? I was thinking about installing another housing/membrane and splitting my supply between both filters? Would this lower my flow enough? Is there another method to lower the flow rate?
sorry for the lengthy post, any help would be greatly appreciated. Thanks.
I hope this post is not duplicated and allowed. I do not operate a car wash, but this forum is the only place I've found where the 4040 is discussed. I have multiple issues with my residential well water, sediment, bacteria, methane, and salt intrusion. I have a fix in place for everything but the salt. I installed a BW 4040 membrane, and I have a couple questions. First, after flushing I began closing the wastewater valve and it back pressured my system to the point it broke a threaded PVC coupling and blew out a section of the PVC pipe. I have a 200psi gauge on the supply just upstream of the RO and the gauge was buried. I was running a boost pump at the time and supplying 120psi before I began closing the waste valve. I disconnected the boost pump electrically and fixed my broken connections and opened the water supply again supplying only well pressure (40-45psi), it immediately back pressured and buried the needle again. I removed the membrane and flowed water through the housing and everything worked as it should. Secondly the flow is pretty low. I have the wastewater open enough to hold pressure around 110psi, but the clean water flow is less than a gallon per minute. I haven't measured the waste flow as of yet.
My thought is that my flow rate being supplied to the membrane through 1" PVC is too much and is causing the back pressure. As a result, I am sending too much water through the waste stream which is why my clean flow is so low. So, here's my question, is there a way I can reduce flow to preserve my plumbing? I was thinking about installing another housing/membrane and splitting my supply between both filters? Would this lower my flow enough? Is there another method to lower the flow rate?
sorry for the lengthy post, any help would be greatly appreciated. Thanks.
