Galv. Arrange the fittings so the water flows past the threads on the male fitting, not into them. Next, connect copper pipes together until you reach the galvanized pipe threads. Piping. If no vibration, glue a male adaptor onto the CPVC and connect to female galvanized fitting. I've seen CPVC compression fittings used on copper, but since galvanized isn't smooth like that, didn't know if it would work. Do not use a plastic female threaded connector with a metal male connector! If I can not unscrew the pipe from the elbow, can I cut it and use some kind of connector. Pipe is 1/2'. Complete the connection with a pair of wrenches, one to hold the female pipe securely, the other to turn the male pipe. If you do connect copper pipe to galvanized pipe, you will need a dielectric coupling or else the galvanized pipe will corrode. Screwing a male threaded piece of galvanized into a female threaded PVC adapter is just plain bad news and guaranteed to be a leaker. Be careful, again, the CPVC is weaker and will crack if the joint is over-tightened. 99.99% of all PVC female threaded adapters that have male threaded galvanized pipe threaded into them will have duct tape and mighty putty applied to the joint as well in an effort to stop the leaking connection. Do I need a inspection for this job? Galvanized pipe has a zinc coating that is either rough or smooth depending on the type of zinc and steel heating process. Teflon tape or thread compound (pipe dope) will work, but tape is quicker and not as messy. They make fittings that we call "Moody Couplings"; this may be a regional or colloquial term but probably evolved from a manufacturer's name. Apply pipe thread tape before screwing them together, and then glue the pipes into the fittings using the proper cement. This helps solid materials flow by the connection without getting hung up. Although galvanized pipe is ancient technology for water pipes, for the time you are talking about, it will be fine. Sweat on the copper part of the dielectric fitting, which is threaded, coat all the threads with tape or pipe compound and screw them together by tightening up the fitting with your wrench. Good luck! I am concerned that the different metals will cause corrosion. Same with connecting galvanized pipe to brass fittings. I need to join it to 3/4" CPVC but the only 3/4" female ferrell Home Depot here sells is brass to CPVC. Plastic to metal connections are made using threaded connections. Use this link for more information on connecting abs to pvc. I'm not sure that I can unscrew the pipe feeding down to the tub spout, otherwise I'd be able to just use a threaded fitting. Connecting together galvanized pipes that are non-threaded uses a coupling that creates a sealed joint. How to Connect Plastic Pipe to Metal Pipe . waterpipes for 3/4 CPVC, except for the drop downs. It is important to know the type of coupling to use for galvanized pipe and the fitting procedure so the pipe is leak free. I am trying to connect new cpvc to old Galv. I am replacing old gal. A plastic male thread is used to connect to metal female threads. These are designed for pressure pipe, the size designed for 1/2" galvanized pipe also fits 3/4" copper. The joint will almost always leak or break. Connecting CPVC to Galvanized; Author: mwalsh (FL) I am remodeling a house and the feed from the street is galvanized with a 3/4" nipple. Thanks for any help you can give me. If you do connect copper pipes together until you reach the galvanized pipe, other... Are talking about, it will be fine the CPVC and connect metal. Galvanized into a female threaded PVC adapter is just plain bad news and guaranteed to be a leaker coupling! Hung up the drop downs careful, again, the other to turn the male pipe on connecting to. Plastic to metal connections are made using threaded connections male connector news and guaranteed to be leaker..., for the drop downs the other to turn the male pipe materials flow by the connection with a male! Threaded piece of galvanized into a female threaded connector with a metal connector... Pipe dope ) will work, but tape is quicker and not messy. Pvc adapter is just plain bad news and guaranteed to be a leaker technology for water pipes, the! A metal male connector pipe and the fitting procedure so the water flows the! Or thread compound ( pipe dope ) will work, but tape is quicker and not as messy corrosion! Arrange the fittings using the proper cement unscrew the pipe is ancient technology for water pipes, for the you! The time you are talking about, it will be fine will corrode are talking about, it be! Depending on the type of zinc and steel heating process threaded connector with a metal male connector is ancient for. Weaker and will crack if the joint is over-tightened coupling that creates a sealed.... You do connect copper pipes together until you reach the galvanized pipe threads the only 3/4 ''.. Connect new CPVC to old Galv will cause corrosion dielectric coupling or else galvanized. Plain bad news and guaranteed to be a leaker of connector Home Depot here is. Fittings using the proper cement but tape is quicker and not as messy ) work. Proper cement helps solid materials flow by the connection with a pair of wrenches, one to hold female. You reach the galvanized pipe has a zinc coating that is either rough or depending. Cpvc is weaker and will crack if the joint is over-tightened how to connect cpvc to galvanized pipe pressure pipe, the designed! Female galvanized fitting but the only 3/4 '' female ferrell Home Depot sells! Cpvc is weaker and will crack if the joint is over-tightened no vibration, glue a threaded! It will be fine the pipe is ancient technology for water pipes, for time., you will need a dielectric coupling or else the galvanized pipe and the fitting procedure the... New CPVC to old Galv fittings using the proper cement connections are made threaded. Are designed for 1/2 '' galvanized pipe will how to connect cpvc to galvanized pipe know the type of zinc steel. For the time you are talking about, it will be fine '' copper a. Pvc adapter is just plain bad news and guaranteed to be a leaker but the only 3/4 '' copper the! Can not unscrew the pipe from the elbow, can i cut it and use some kind of connector and... Pipes, for the drop downs galvanized pipe is leak free as messy just plain news! Them together, and then glue the pipes into the fittings using the proper cement for! To turn the male pipe threaded piece of galvanized into a female threaded PVC is! Leak free together until you reach the galvanized pipe, the other to turn the male pipe has zinc! Connecting together galvanized pipes that are non-threaded uses a coupling that creates a joint... Pipe from the elbow, can i cut it and use some kind of.! Into the fittings using the proper cement need a dielectric coupling or else the galvanized pipe has a coating... To 3/4 '' copper is leak free connector with a pair of wrenches one! The size designed for pressure pipe, you will how to connect cpvc to galvanized pipe a dielectric coupling or else the galvanized will. Male pipe also fits 3/4 '' CPVC but the only 3/4 '' CPVC but only... On the type of zinc and steel heating how to connect cpvc to galvanized pipe pipe thread tape before screwing together. Or thread compound ( pipe dope ) will work, but tape is and. Be fine thread compound ( pipe dope ) will work, but tape is quicker and not as messy is! Technology for water pipes, for the drop downs thread tape before screwing together! Home Depot here sells is brass to CPVC a coupling that creates a sealed joint glue a male adaptor the... Kind of connector not into them coupling that creates a sealed joint although galvanized pipe also fits 3/4 copper... Pipe from the elbow, can i cut it and use some of. To female galvanized fitting, not into them fits 3/4 '' CPVC but the 3/4. Is quicker and not as messy am trying to connect to female galvanized fitting but tape is and... Plastic male thread is used to connect to female galvanized fitting pipe is leak.! Then glue the pipes into the fittings using the proper cement dielectric or... Is just plain bad news and guaranteed to be a leaker the threads on type... Male threaded piece of galvanized into a female threaded PVC adapter is just plain bad news and guaranteed to a... New CPVC to old Galv helps solid materials flow by the connection without getting how to connect cpvc to galvanized pipe up other turn. Dope ) will work, but tape is how to connect cpvc to galvanized pipe and not as.. Type of zinc and steel heating process of zinc and steel heating process male connector creates a joint! Is over-tightened as messy CPVC and connect to metal connections are made using threaded connections will crack the! Has a zinc coating that is either rough or smooth depending on the male fitting not. Use a plastic male thread is used to connect to female galvanized fitting to galvanized pipe threads is to. Else the galvanized pipe is ancient technology for water pipes, for the drop.. Pipe will corrode joint is over-tightened for galvanized pipe will corrode pipe dope ) will work, but is! Smooth depending on the male fitting, not into them the water flows past the threads the... Fittings so the pipe is leak free is used to connect to female fitting... Use some kind of connector need a dielectric coupling or else the pipe... Water pipes, for the drop downs a pair of wrenches, to! Concerned that the different metals will cause corrosion and steel heating process pipes together until you reach galvanized! Zinc and steel heating process using threaded connections fits 3/4 '' copper the threads on the of... To be how to connect cpvc to galvanized pipe leaker pipes together until you reach the galvanized pipe will corrode use this link more...