高压角式止回阀

H42F101,H62F101,H82F101油田高压角式止回阀

H42H-250,H42Y-250高压直通止回阀

H62Y,H62H高压焊接止回阀

H63Y-250焊接角式止回阀

HG41A,微阻止回阀

卡箍角式止回阀H83Y-250

H82Y-250高压卡箍式止回阀

FHG83A高压微阻止回阀

H62Y-250,H62Y-350,H42Y-160I

H62Y-250I,H62Y-350I,H62Y-400I,

DH41B-160P,DH41B-250P,DH41B-160