Discharge Valve

We had some leaking at our discharge pipe (inground) and we replaced the spider gasket on the discharge valve and once we did that the handle on the valve was not firm. We then replaced the spring in the valve. That seemed to work for about a month and now there is a pencil size stream pouring out of our discharge line.  When we turn the power off we can hear air that we have not heard before.  Any suggestions?

Sheila, so those spider gaskets do need either clear RTV silicone or Loctite to make sure that they are glued into the channel where the gasket sits. If not they may move causing a leak. Here is a general guide that we put together for changing those gaskets that may assist.