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The Grundfos JP 3-42 PM1 is a jet assisted pump with stainless steel pump body. The jet assistance gives this pump a strong suction capability making it suitable for below or above ground tanks or long suction lines. This pump is ideal for 1 or 2 tap outlets to your garden, toilet or laundry. The JP 3-42 PM1 is fitted with a PM1 pressure controller which allows the pump to start and stop automatically according to demand and will also protect the pump by turning it off if your tank runs out of water.