Intensive growth of gate valves moved quickly forward from aoaltwar's blog

The term Gate Valve came from the words gatan, gap, gasse and gat, and implies a passage having a barrier, which may be hinged on one hand, allowing it to be OPENED and CLOSED.Some in 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 progression of gate valves moved quickly forward because of their increasing easy use in industrial operations. Over time the type of material involved in their manufacture were improved and modified to fit different applications.

Gate valves are given to the solid wedge or disc getting stuck between seats on account of differential contraction relating to the valve seats plus the wedge during shutdown of temperature piping system. The piping system should be reheated to the disc to go smoothly again. This makes the gate valve unsuitable for utilization in piping systems governed by high fluctuations in temperature. However, this concern can be overcome by utilizing 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 between your valve seats or end in improper seating of wedge relating to the seats and leakage over the valve seats.

Gate valves being metal seated will not provide bubble-tight shut-off and will not be utilised in applications where small leakage over the seats will not be permissible.

Structural characteristics of rising-stem gate valve:
The general gate valves officially used on the market for quite a while generally have water leakage or rust. The company introduces the elastic seat seal gate valve manufactured 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 from the elastic disc to make a small amount of elastic deformation to accomplish a good sealing effect. The valve has got the obvious features of light switch, reliable sealing, good elastic memory and service life. It could be widely used being a regulating and intercepting device within the pipelines of plain tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, power, shipbuilding, metallurgy, energy system, etc.