Crafted from carbon steel and able to handle a maximum flow range up to 500gpm, Viking high-flow housings are optimized for high-flow applications and compatible with a wide range of fluids including gasoline, ethanol blends up to E15, biodiesel blends up to 20%, full 100% biodiesel, diesel fuel, ultra-low sulfur diesel (ULSD) and fuel oils. Vikings are also compatible with industrial fluids such as lube, gear, hydraulic, and synthetic oils. Differential gauge kits are available for monitoring serviceable life.