• Lost-wax injection casting. • The most common product for low pressure application. • DIN3202 M3 face to face are available upon request. • Body materials : Carbon Steel / Stainless Steel. • Other seat materials are available upon request, please consult Terofox for your specific application. • Drain port ( For Guage use ) is available upon request. Current patterns : 1/2",3/4",1" ( guage port : 1/8" )