DTL插式止回阀常规型号参考:CCL-062-X0.2N , CCL-062-X1.0N , CCL-062-X0.2V , CCL-062-X1.0VDTL插式止回阀常规型号参考:CCL-082-X0.2N , CCL-082-X0.2V , CCL-082-X1.0N , CCL-082-X1.0V ,DTL插式止回阀常规型号参考:CCL-092-X0.2N , CCL-092-X0.2V , CCL-092-X2.0N , CCL-092-X2.0V