Cooperated with RD safety circulating valve, it can entirely take the place of APR-M2 tool with the character of accurate sampling,reducing construction period,simple and safe sampling etc.

• 与RD安全循环阀配合使用,完全可以替代APR-M_2工具,具有取样准确、缩短施工工期,取样过程简单、安全等特点。