burkert宝德 2030两位两通膜片阀，2030型先导控制膜片阀带活塞执行机构 密封膜片，回路功能A。The type 2030 pilot control with piston diaphragm valve actuatorsSeal diaphragm, A circuit function.

burkert宝德 3230两位两通膜片阀。适用于工艺过程中污染的介质和废水处理。Suitable for medium and waste water treatment process in the process of pollution.