The Plus Two Multi-Purpose Valve offers performance� low pressure drops that are equal to or better than any valve on the market today�and convenience: You can replace the stem seal packing under full system pressure. The Plus Two Multi-Purpose Valve is made of ductile iron with stainless steel and bronze fitted construction to provide years of trouble-free service. It is available in sizes ranging from 1 �� through 14?, with flanged connections (1 ��, 2? and 2 �� units are threaded connections).