Description Electrical Contact pin - sold each Order; 1 for single pulsators 2 for alternating pulsators Pin only works with Surge round nipple pulsators. Surge part number was 10268 Original GEA Farm Technologies spare parts Related Spare Parts; 10224R Single Moveable Surge Electric Pulsator - Round Nipple 7750-0010-290 Alternating Moveable Surge Electric Pulsator - Round Nipple 7750-0221-536FT Twin Black Surge Pulsation Hose 7750-0221-537 Single Pulsation Hose - Original Surge Black 7750-9905-140 Rebuild Kit (2 required) 7750-0210-292E Round Gaskets 7750-0010-268 Electrical Contact Post 7750-0010-282 24v alternating coil 11/22