Customers frequently ask me about Pool Plumbing and Valves

In a pool plumbing system, there are pipes that bring water from the pool (suction pipes), and one or more pipes that take water back to the pool (return pipes). Pool Valves are used to control the direction of water flow, to and from the pool, and in and out of equipment. In between the suction pipes and the return pipe are the pool equipment such as the pump and filter, salt chlorinator or chemical dosing system and maybe a heater.

I have included some photos of customers pool equipment set ups above to show you different examples of setups.

I recommend once you understand the flow of the water and know the source of each pipe above the ground, at your equipment area, label them with a permanent marker. You can write the names and use arrows to show water flow direction.

Suction Side vs. Pressure Side

Now that you understand the direction of the water flowing from the pool, through your equipment and back to the pool.

In front of the pump, or specifically in front of the pump impeller, the water is under a vacuum, and suction draws it up from the pool.

Any problems in the suction side pipes or valves will leak air when the pump is on.

After the impeller, the water is now under pressure. Any void in the pipes or valves will leak water.

The water FROM the pool is under a vacuum suction, being PULLED from the pool. After the water passes thru the eye of the pump impeller, it is under pressure and is being PUSHED through the filter and back to the pool.

Pool Non Return Valves

A pool check valve is a one-way flow valve, and is used for a variety of purposes. Installed in the pipe, it only permits water to flow in one direction only.

  1. For pool systems installed above the pool water level
  2. To prevent backflow from a chlorinator into a heater or filter
  3. To prevent cycling of water in a loop, e.g. solar heater systems

3 Way Valves

As you turn the handle, you are turning the diverter, or ‘door’ which can be in a position between the two pipes, splitting the flow equally among both incoming pipes, or the valve can be turned within a range of 180 degrees, to restrict or close off, one of the two incoming pipes. An example is above where they are installed so you can control how much water (if any) is going through a pool heat pump.

3 Way valve installation.

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Please feel welcome to also email us a diagram along with the answers below
Using the how to measure diagram, please provide the size of your pool in metres, please provide Pool Width (A) and Pool Length (B) in metres
Please include total length (B) in metres and total width (A) in metres if you have not listed it below the diagram
Does your pool have a step? Please note if your step is at the end of the pool and not on the side, you need to include it in the overall length of the pool as they cannot add to the length of the blanket for a step, only the width*
If your pool has a step is it on the RHS or LHS when looking from the shallow end of the pool?
What cover shall we quote you on? Note the thickest 525 micron covers do last longer*
If you need a quote on a roller, which roller shall we quote? If you choose one that does not suit the size of your pool, we will quote the closest option.*

If you already have a roller, do you need the attachment kit (refit kit) to reattach your new blanket to your existing roller? Please note if you are ordering a roller it will come with an attachment kit included*
If you already have a roller, do you need an over cover to protect the blanket once rolled up. You will likely already have one, but some customers find it has worn out so they need a new one to protect their new blanket. If you need an over cover we need to know the length of the roller tube in metres. Please note if you are ordering a roller it will come with an over cover included.*
Picture shows over cover (and roller leg)
The white material is the over cover protecting the blanket when rolled up
Delivery is $27.50 or you can choose to collect from Daisy in Welshpool
Do you want Daisy to install your item/s? We can organise the professionals at Daisy to install your items for you if you live in the metro area.*
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