Table of Contents
Can I connect PVC to cast iron?
Tying in to cast iron with PVC is a great way to add new waste lines. First, fabricate your PVC wye fitting. Using a regular wye, cut two lengths of PVC that will slip into the ends of the wye fitting and hold the no-hub fittings that attach the PVC to the cast iron.
Will 3 PVC fit inside 4 cast iron?
Re: pvc pipe inside old cast iron DWV? If the old timmer is talking about replacing all the the old 4″ cast iron above ground with 3″ PVC and then sleeving the 4″ cast iron underground using an approved transition fitting at the point where the cast iron meets the PVC, then yes it’s permitted.
How is cast iron pipe connected?
There are generally three methods used for joining cast iron soil pipe. Hub and spigot cast iron soil pipe may be joined by the compression gasket or a caulked joint. Hubless cast iron soil pipe are joined by using a hubless coupling. The gasket must be inserted into the hub completely.
How do you seal PVC to metal threads?
When making threaded joints you need to use a sealer/lubricant. This is a product that helps seal the joint and also serves as a lubricant to make it easier to screw the male end into the female. The standard products for this are either Teflon pipe dope, Teflon tape, or PTFE tape.
Can you screw PVC into galvanized pipe?
Yes just glue on a matching PVC threaded coupler and screw in the galvanized pipe. You are better off changing all the pipe over as if the galvanized pipe is leaking in one place the rest will soon start leaking.
How do you connect PVC conduit to metal electrical box?
Cut the pipe, apply PVC cement, and insert it into the electrical box, just as easy as that.Steps to Connecting the Conduit to the Electrical Box Power off. Cut the conduit. Smoothen it out. Install the fittings. Apply the PVC cement. Connect the pipe and the box.
How do you attach PVC conduit to metal box?
The PVC conduit is solvent welded (glued) to an adapter with male pipe threads on one end. The threaded end of the adapter is inserted into the knockout and a locknut is screwed on inside the box. If the box is a wet-location rated box with built-in threaded fittings, the adapter is threaded directly into the box.
How do you secure a cast iron pipe?
Wrap rebar tie wire or metal pipe strap above the section of pipe to be cut. Use nails or screws to secure each end of the wire or strap to a nearby joist or header board. When securing a vertical stack, wrap the wire or strap below a hub or an elbowed section of the pipe to keep the pipe from slipping down.
How do you support a cast iron drain pipe?
How is Cast Iron Supported? Vertical cast iron plumbing stacks transfer the weight to the floor using a simple riser clamp. The clamp tightens around the pipe and the strong metal legs spread out the weight onto the nearby floor. Horizontal runs of cast iron pipe are supported by clevis hangers that cradle the pipe.
Can you connect plastic pipe to metal pipe?
To successfully connect plastic and metal pipes, you need threaded connections. The plastic male thread must connect to the metal female thread. If you try to connect it the opposite way – a plastic female to metal male – then the connection will ultimately break or leak.
Can you cut cast iron with a Sawzall?
Yes. Cutting cast iron with a sawzall is an efficient way to cut cast iron. If you already own the tool, all you need is the blade designed for cutting cast iron. There are other tools that will also cut cast iron, but the reciprocating saw is the most versatile.
What year did they stop using cast iron pipes?
Modern Replacement Pipes Cast iron pipes finally went out of fashion in the 1980s. They were replaced by Polyvinyl Chloride plastic (PVC), which can be made quicker and more easily.
How do you separate cast iron pipe joints?
How to Take Apart Cast-Iron Plumbing Install a 14/-inch drill bit into a cordless drill. Pry out the lead, using a flathead screwdriver. Fit the chain on the snap-cutters around a cast-iron pipe to cut it into shorter sections. Compress the handles to snap-cut the pipe at that point.
How do you seal a cast iron pipe joint?
Step 1: Clean Away Corrosion. SCP_113_02.jpg. If water or a bad smell comes from an old leaded joint, use a cold chisel and hammer to gently tap the lead back into the joint. Step 2: Fill with Repair Paste. SCP_113_03.jpg. Fill the resulting void with cast-iron pipe repair paste. Step 3: Fill Any Holes. SCP_113_04.jpg.
Do you use thread tape on PVC to metal?
Don’t use Teflon tape, Teflon paste or pipe dope. Metal to metal fitting joints are more difficult to tighten than plastic; the surfaces tend to gall without the aid of such lubricants as Teflon or pipe dope. Plastic fittings do not need this lubrication.
Can you thread metal to PVC?
If a metal thread is put directly into a plastic thread, as the temperature of the fluid changes, the metal is going to expand and contract, and the plastic is going to expand and contract; but they don’t do it at exactly the same temperature nor amount.
