Product features：
Pipe straight-through glass sight glasses are generally divided into two types, one is a glass tube-type pipe mirror, and the other is a glass plate straight-through sight glass.
The pipe is directly connected to the glass sight glass, which is used for draining or receiving the backflow before the tank, and cooling water and other liquid pipes to observe the liquid flow.
Valve body materials: carbon steel, stainless steel, PVC, etc.
Nominal pressure range: 2.5 and 6 kg/cm2.
Working temperature: metal≤200℃, allowable sudden change temperature 80℃
Nominal diameter: DN15~DN150
The sight glass is made of tempered glass.