P V C-Creations

Project 002

Space Saving Fitting Configuration

When building PVC pipe systems, whether your doing new installations or replacing older systems, the space you get to work in is often at a premium. You can spend hours trying to fit your new system in the space allotted and find your always short of room to do the things you'd like, such as adding service unions or valves.

Today, I use a computer with a software package called AutoCad that costs $ 3000.00 along with an engineering program add-on from the pipe Representative that allows me to draw the system to scale. It tells me how much pipe and how many of each fitting are on the drawing, how much it costs and how much it weighs with water in it !

You get to go to Hugh M Woods or General Hardware with your pencil sketch and hope they have the fittings you need or the fittings you can get to make up the fittings you needed. With some advanced planning and some ingenuity, you can get what you need and have a better chance of putting it in the space you have.

For the piping projects I do, which are mainly chemical feed systems such as Chlorine, Sulfur-Dioxide, Fluoride or Coagulants, I use Schedule 80 PVC pipe and fittings. I also do my small booster pump stations this way.

I do not use schedule 40 PVC because I feel it's too light physically to start with and it won't tolerate the chemicals as long as the thicker-walled schedule 80 pipe. It takes a better lickin' as it were; more of the abuse you'd see in a plant with people moving things around and bumping and kicking it.

First of all comes the planning! Find you local pipe supplier and get a catalogue that has pictures of the fittings available and their measurements. It will also have chemical resistance charts to help you with selection of intermediate tubing and tube fittings for the final flexible connections to your equipment.

I buy my Spears PVC fittings and tube fittings from the suppliers below, depending on stock availability and where I'm coming from ! They are both very good companies to deal with, but each has a slightly different inventory and are usually complementary in filling a complex order. Both will provide you with catalogues that should have the info I mentioned. Ask also for any engineering manuals they might have !!

Harrington Plastics 303-371-4480 / North of I-70 in East Denver

Plastics Inc. 303-289-2557 / North of I-270 off Hwy 85 in Commerce City.

Some of the tricks I've used are shown below and they work for me.

Right click the Thumbnail and pick "Save Target As.." to download the drawing.
Left Click on the Thumbnail picture to ENLARGE it.
After ENLARGING it, Right click the picture and pick "Save Picture As.." to download the drawing.

The 1.5" fittings shown here are assembled to reduce the overall length required. There is also a greater stability inherent in this configuration as the otherwise threaded joints, 2 more of which would have existed in the double male adapter, which we glued, have been eliminated. TWO LESS threaded joints to move on you. TWO LESS threaded joints to leak.
DCP01235.JPG (5383 bytes)

These Ejector Check Valves use the Ell Fitting described above, but in these cases the length was made specific to assist in the actual application, which was to move the Check Valve away from the the Ejector and place it in a vertical position to allow it to drain.

On the right, there are two of these cascaded using these ell's, eliminating 4 threaded joints!! This is significant because the check valve weighs about 5 pounds, a lot of plastic to have hanging on threaded joints.

DCP01236.JPG (23617 bytes)

 

For info, Click on the E-MAILBOX below
or call Thom @ 303-431-7294.

 


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