with quick-closing shut-off valve with double O-ring seal, non-return valve in the return, brass housing, with mounting bracket, with transparent cup for suction operation (except spin-on filter and "Oilpur B"), burner side G 3/8" Male thread with internal taper for hose connection, on the tank side female thread G 3/8" for clamping ring connection 6, 8, 10, 12 mm (order connection sets separately)