Model Number | 
                                                                        N/A Z-4 | 
                                                                                Bore and Stroke (in) | 
                                                                        N/A H - 4 Cyl., 2.7" Bore, 2.4" Stroke J - 4 Cyl., 2.9" Bore, 2.4" Stroke K - 4 Cyl. , 2.7" Bore, 3" Stroke M - 4 Cyl. 2.9" Bore, 3" Stroke | 
                                                                                Compressor Type | 
                                                                        N/A Z | 
                                                                                Motor Sizes Available | 
                                                                        N/A A B C D E | 
                                                                                Motor Vendors Available | 
                                                                        N/A Leroy Somer A.O. Smith | 
                                                                                No. of Steps Unloading | 
                                                                        N/A 0, 1, 2 | 
                                                                                Voltages Available | 
                                                                        N/A 17 - 200, 3 Phase, 60 Hz 28 - 230, 3 Phase, 60 Hz 40 - 360, 3 Phase, 60 Hz 43 - 440, 3 Phase, 50 Hz 46 - 460, 3 Phase, 60 Hz 50 - 380/415, 3 Phase, 50 Hz 58 - 575, 3 Phase, 60 Hz 59 - 190, 3 Phase, 50 Hz 63 - 220, 3 Phase, 50 Hz 64 - 346, 3 Phase, 50 Hz 70 - 500, 3 Phase, 50 Hz | 
                                                                                No. of Cylinders | 
                                                                        N/A 4 | 
                                                                                Oil Charge (gal) | 
                                                                        N/A 1.75 | 
                                                                                Oil Pressure | 
                                                                        N/A 65-70 psi over suction | 
                                                                                Weight | 
                                                                        N/A 780 lb | 
                                                                                Catalog Number | 
                                                                        N/A YK478 |