Detect and exclude outliers in a pandas DataFrame

I have a pandas data frame with few columns.

Now I know that certain rows are outliers based on a certain column value.

For instance

column ‘Vol’ has all values around 12xx and one value is 4000 (outlier).

Now I would like to exclude those rows that have Vol column like this.

So, essentially I need to put a filter on the data frame such that we select all rows where the values of a certain column are within, say, 3 standard deviations from mean.

What is an elegant way to achieve this?