The OilMiser Fill-or-Drain from JLM Systems Ltd., Richmond, B.C., is a breather assembly that also allows filling and draining through a 1-in. pipe. Features include an aluminum body with two separate internal cavities, 1-in. NPT outlet port, all-weather molded plastic cap, and replaceable air filter. The mechanisms are suitable for industrial and mobile applications. A companion device mounts to 2-in. pipe bungs on standard oil drums. Fluids are transferred through portable transfer pumps, which reduces the risk of contamination and spillage.