Suntec B2TA-8851N Two Stage Oil Pump 16 GPH @ 300 PSI 3450 RPM Specifications: Mounting Flange mounting Connection threads Inlet and return 1/4 NPTF Nozzle outlet 1/8 NPTF Pressure gauge port 1/8 NPTF Bleeder valve port 1/8 NPTF Valve function Pressure regulation Cut-off Solenoid Strainer 7 GPH Shaft 5/16 in By-pass plug Not inserted in return port, for one pipe system. To be inserted in return port with a 5/32 Allen key for two-pipe system Hydraulic Data Nozzle pressure range 100 - 200 psi (low fire) 200 - 300 psi (high fire) Delivery pressure setting 300 psi Capacity 16 GPH Oil temperature 50 - 115 F Inlet/return pressure 10 psi max Suction height Single pipe : 6" Hg max. vacuum, two-pipe : 17" Hg max. vacuum, to prevent air separation from oil Rated speed 3450 rpm max Solenoid Valve Characteristics Solenoid valve voltage 110 - 120 V 50/60 Hz Consumption 9 Watts Ambient temperature 50 - 115 F Certified cUL and UL Same As (Or Replaces) Beckett 21259U, Carlin 23556S, Carlin 7217 and Power Flame 100850, B2TA-8851, B2TA8851, B2TA8851N Specifications: B - Two Stage 2- 3450 RPM T - 23 GPH A- R.H. Rotation - R.H. Nozzle 88 - Hub 54 mm, Lip Seal 2 STEP SOLENOID NON-CUTOFF 51 - Mounting Style and Specialty Pumps