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When you simply need an air-operated diaphragm pump, the JDI-DP1 and JDI-DP1-UL both come in an all-bolted durable construction for use in automotive applications among others. Rated for use with diesel, grease, kerosene and oil, these UL and non-UL Listed pumps feature O-ring seals and Nitrile diaphragm material, making it ideal for low-viscosity petroleum fluids.