Intensive progression of gate valves moved quickly forward

  • The term Gate Valve comes from the words gatan, gap, gasse and gat, and implies a passage having a barrier, that is hinged somewhere, allowing it to be OPENED and CLOSED.Some with the first known gate valves were utilised by the Egyptians, Greeks, and Romans when irrigating fields with water find more. These were simple wooden barriers, however they were well-suited with the requirements on the task.

    In the 1800s, intensive continuing development of gate valves moved quickly forward this can increasing used in industrial operations. Over time the type of material involved in their manufacture were improved and modified to accommodate different applications.

    Gate valves are given to the solid wedge or disc getting stuck between your seats as a result of differential contraction between your valve seats and also the wedge during shutdown of high temperatures piping system. The piping system has to be reheated for that disc to search smoothly again. This makes the gate valve unsuitable for used in piping systems be subject to high fluctuations in temperature. However, this concern can be overcome by making use of gate valve with flexible wedges.

    Solid wedge gate valves are understanding of thermal expansion loads or bending moments which could cause the wedge or disc to lock between your valve seats or cause improper seating of wedge relating to the seats and leakage along the valve seats.

    Gate valves being metal seated don't provide bubble-tight shut-off and must not be found in applications where small leakage through the seats usually are not permissible.

    Structural characteristics of rising-stem gate valve:
    The general gate valves applied to the market for a while generally have water leakage or rust. The company introduces the elastic seat seal gate valve made by European high-tech rubber and valve manufacturing technology, which overcomes the defects of poor sealing and rust of general gate valves gate valve. The sealing gate valve uses the compensation effect on the elastic disc to generate a small amount of elastic deformation to accomplish a good sealing effect. The valve gets the obvious features of light switch, reliable sealing, good elastic memory and service life. It may be widely used like a regulating and intercepting device within the pipelines of plain tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electrical energy, shipbuilding, metallurgy, energy system, etc.