The old pump failed, so it was a good time to update to something more energy efficient. Intakes on the variable speed pumps are lower than the old pumps, a design change that increases performance. Since the intake valve is located very close to the ground in this system, it became an issue with the new pump having an intake that was 2" lower than the last pump. This would have put the valve partially underground if I glued it on after cutting out the old valve.
I raised the pad with paving stones 4.5". This was just enough to make up for the 3" I cut off when the old valve was removed and keep the valve above ground level. The old pump was plumbed in with out any straight pipe. There was no place to make a cut, making this install much more difficult. I like to add straight pipe in the event anything may need to be replaced in the future. With many places to cut, it is easy to add a union, or a coupler to make a repair if necessary. Unions on the pump, filter, return line and discharge pipe, also make it easy to remove sections of pipe. This allows easy access to the filter and pump when service is required.
I raised the pad with paving stones 4.5". This was just enough to make up for the 3" I cut off when the old valve was removed and keep the valve above ground level. The old pump was plumbed in with out any straight pipe. There was no place to make a cut, making this install much more difficult. I like to add straight pipe in the event anything may need to be replaced in the future. With many places to cut, it is easy to add a union, or a coupler to make a repair if necessary. Unions on the pump, filter, return line and discharge pipe, also make it easy to remove sections of pipe. This allows easy access to the filter and pump when service is required.
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