Valve shall have a bronze body, include integral check valves and operate so the thermostat controls the cold and hot water ports.
这种阀门应该具有青铜阀体，包括整合的止回阀，使得温度控制装置能够控制冷水和热水端口。
2
Air is forced up from the buoy counterweight tube during downward motion causing the balls to seal the air ports in the valve, thus forcing the air to flow into the whistle.
空气在向下运动过程中受到浮标向上的推力，使阀球将阀门里的气舱密封住，这样迫使气流进入雾笛。
3
Mount valve against the motor with the ports in corresponding position.