F4 QT450 Elastic Seat Gate Valve PN16 Ductile Iron Sewage Gate Valve

F4 elastic seat seal gate valve QT450 water delivery high temperature resistance ≤180° PN16 sewage seawater

product description

The gate valve is usually suitable for the conditions that do not need to be opened and closed frequently, and the gate is kept fully open or fully closed. Not suitable for use as regulation and throttling.

For high-speed flowing media, when the gate is partially opened, it can cause vibration of the valve, and the vibration may damage the sealing surface of the gate and the valve seat, and throttling will cause the gate to be eroded by the medium.

From the structural form, the main difference is the form of the sealing element used.

According to the form of the sealing element, the gate valve is often divided into several different types, such as: wedge gate valve, parallel gate valve, parallel double gate gate valve, wedge double gate gate, etc. The most commonly used forms are the wedge gate valve and the parallel gate valve.