Heat flow bypass valve through the heat and cold coolant of coolant mixed to make the air-freeze agent in the heat exchanger coolant temperature constant.
热气流旁通阀通过将热冷冻剂与冷的冷冻剂混合，使空气-冷冻剂热交换器中的冷冻剂温度保持恒定。
2
This control valve is a weir diaphragm valve and has created a clogging congestion point in the flow system that requires constant maintenance.
这个控制阀是一个堰式隔膜阀，在流体系统中形成一个堵塞点，需要经常进行维护。
3
A check valve that controls fluid flow rates to maintain a predetermined, constant pressure upstream from the valve.