SGL Series sliding vane pumps from Blackmer are available with optional neoprene mechanical seals and O-rings. Seal and O-ring resilience characteristics and high tensile-strength properties provide improved resistance to wear from various applications involving liquefied gases, refrigerants, and other chemicals. Pumps are available in five sizes with capacities of 4 to 300 gal/min (15 to 1135 L/min). Featuring a ductile iron construction with an internal relief valve and optional spring ranges, SGL Series pumps provide improved self-priming and dry run capabilities. The sliding vane design delivers performance over a range of temperatures and differential pressures. Pumps also are designed with a cavitation suppression liner for reducing the noise, vibration, and wear normally caused by entrained vapors.