bosco
Full time employment: Posting here.
- Joined
- Jul 10, 2005
- Messages
- 987
How much water do you have, and how often is there water needing to be pumped?
The suggestion above of 1 1/2" pvc line seems huge. This is more appropriate for a continuous dewatering effort, or a very large area. Rather than worrying about the volume of water in the line constantly cycling the pump (as alluded to by a previous poster), if you need a line this big, you would want to install a check valve just on the downstream side of the pump. If you do that, you don't have to worry so much about the grade of the discharge either, since it won't matter if the discharge line sits full--it won't drain back into your sump.
Usually, you don't need timers and such--you need a pump with a float switch. Again, this being for intermittant water. This also prevents dry pumping--very hard on the equipment.
I'm talking about a situation where you are not normally below the water table but need a pump to kick on during the relatively infrequent times when there is water collecting.
The suggestion above of 1 1/2" pvc line seems huge. This is more appropriate for a continuous dewatering effort, or a very large area. Rather than worrying about the volume of water in the line constantly cycling the pump (as alluded to by a previous poster), if you need a line this big, you would want to install a check valve just on the downstream side of the pump. If you do that, you don't have to worry so much about the grade of the discharge either, since it won't matter if the discharge line sits full--it won't drain back into your sump.
Usually, you don't need timers and such--you need a pump with a float switch. Again, this being for intermittant water. This also prevents dry pumping--very hard on the equipment.
I'm talking about a situation where you are not normally below the water table but need a pump to kick on during the relatively infrequent times when there is water collecting.
