Self Priming Pumps Self Priming Pumps Download the below PDF document with the different curve sizes for Self Priming Pumps. JSW Series 1 Self Priming Pumps: – 3 inch Curve – 4 inch Curve – 6 inch Curve – 12 inch Curve Request a QuotePlease enable JavaScript in your browser to complete this form.Name *FirstLast Business/Organisation *Email *Phone NumberYour Request *Submit