Camis CC00SL15 - 1-1/2" Clear Silent Check Valve

Thank you for your interest in Sump Pumps Direct.
The Camis check valve dimensions that you requested are:

Total Length including Rubber Unions: 11-1/4"
Total Length without Rubber Unions: 6-1/2"
Diameter with Rubber Unions: 2-1/8"
Diameter without Rubber Unions: 1-7/8"

Thank you for your interest in Sump Pumps Direct. While either installation is feasible and will work, my suggestion will reduce stress on the pump when starting due the the extra weight of the water sitting on top of that check valve when it's located at the pump discharge port. In addition, it makes for an easier access point for any servicing that may be needed on your system.

Thank you for your interest in Sump Pumps Direct. The Camis check valves can only be installed in a vertical position.

The purpose of the check valve is to keep any water that's inside that discharge or drain line, from returning to the sump basin once the pump shuts off. Typically, you will have a PVC discharge pipe connected to your sump pump that will extend vertically, usually anywhere from 5'-10' and then attach a 90 degree elbow to extend the run to your back yard or municipal drainage system. The check valve is generally installed on that vertical section about 1/2 - 2/3 up from the pump. It would really be your decision weather you think you may need one in your personal application but they can help avoid rapid or continuous cycling of the pump.

You definitely want to install a check valve along with your sump pump. The check valve will keep most of the water left in your discharge pipe from returning and emptying back into your sump basin once your pump shuts off, thereby preventing any rapid re-cycling or continuous cycling of your pump.