Submersible Pumps Submersible Pumps Download the below PDF document with the different curve sizes for by selecting the curve on the dropdown below for Submersible Pumps. Different Curve Sizes: – 4SD2 – 4SD4 – 4SD6 – 4SD6 42, 4SD 6 52 – 4SD8 – 4SD10 – 4SD12 – 4SD16 Request a QuotePlease enable JavaScript in your browser to complete this form.Name *FirstLast Business/Organisation *Email *Phone NumberYour Request *Submit