Detailed Product Description Pressures:: 0-100-300....15,000 psi Flanges:: Front, back, & U-Clamp Sizes:: 1.5, 2, 2,5, 4, & 6 inch Cases:: SST, ABS, Chrome, etc Connections:: Center Back with flange or filled or dry but fillableExported to England, America and other Western countries, attained ISO9001 certification and environmentally friendly.