Refund procedure after due date of varification expired

Either e-verify the ITR by either of options available like net banking, aadhar OTP, etc.; or wait for department to accept the ITR V.

Refer: https://cleartax.in/s/income-tax-e-verification-evc

But on E-login page it shows due date of varification expired.so, now if department receive copy after date, the status on login page will show varification after dua date.so it can possible get refund. 

Generally department accepts such normal delays and processes the ITR. In that case you will receive the refund, if everything be in order.

Otherise the status of the ITR will show as Invalid. In that case you will have to re-submit ITR u/s. 139(4), and claim refund.