SafeWay's S40 Series is a general purpose, double shutoff fluid transfer quick coupling available with either a rugged ball valve or leak-free, high flow poppet valve. The S40 was the first two-way (double acting) sleeve quick coupling, introduced by SafeWay in 1969 as our first product. The S40 Series is widely used wherever the ease and convenience of one-hand connection or disconnection is desired. It is original equipment on a wide variety of agricultural and mobile equipment.