Intensive growth and development of gate valves moved quickly f

  • The term Gate Valve originated in the words gatan, gap, gasse and gat, and implies a passage using a barrier, which is often hinged on one hand, allowing it to be OPENED and CLOSED.Some on 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, nevertheless they were well-suited for that requirements on the task.

    In the 1800s, intensive growth of gate valves moved quickly forward greatly assist increasing used in industrial operations. Over time the types of materials involved in their manufacture were improved and modified to accommodate different applications.

    Gate valves are inclined to the solid wedge or disc getting stuck between your seats on account of differential contraction between your valve seats as well as the wedge during shutdown of hot temperature piping system. The piping system should be reheated to the disc to visit smoothly again. This makes the gate valve unsuitable for used in piping systems governed by high fluctuations in temperature. However, this matter 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 may cause the wedge or disc to lock relating to the valve seats or end in improper seating of wedge relating to the seats and leakage along the valve seats.

    Gate valves being metal seated usually do not provide bubble-tight shut-off and may not be utilised in applications where small leakage along the seats usually are not permissible.

    Structural characteristics of rising-stem gate valve:
    The general gate valves officially used on 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 create a small amount of elastic deformation to realize a good sealing effect. The valve contains the obvious attributes of light switch, reliable sealing, good elastic memory and service life. It is usually widely used like a regulating and intercepting device about the pipelines of regular water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electrical power, shipbuilding, metallurgy, energy system, etc.