... in the pressure, suck or return pipeline of hydraulic system to filter solid particleThreaded :NPT , BSPT, BSPP, DIN2999, ISO 228/ ... 3,Investment casting 4,Easy installation and operationCompany profileXinxiang Wanhe Filter CO.,LTD , is located in the Filtration Zone ... sale of industrial fitlers, which including oil filter, oil separator and air filter applied in refrigeration and coal mine equipment. ...