Device steel flanged wedge gate valve

Typical for the heating season breakthroughs in teplotsentralnoe highways happen (for the most part) due to worn out pipes that don't withstand the high pressure and high temperatures. But the reason for the leakage of coolant can be the problems caused by the valving. for example, the most popular option - a valve to cover the work-flow of the V-principle.

Structural device regardless of the size represents:

the

• the
• Steel case with removable (bolted) cover. the
• the Cavity with the two (input and output) holes under a certain diameter of the pipe for the passage of fluid. the
• Vertically rising or descending wedges mounted between the two saddles.

change the position of the shutter by means of threaded pairs in the form of a spindle and spindle nut. Provided as a manual control rod, and electric or pneumatic transmission of force through a thrust.

Principal faults of wedge gate valves

Despite the simplicity of the device, the block valves are already installed on the water distribution systems require periodic revision of their status and condition. Cause premature failure of the valves is the poor quality of water, containing in its composition metal debris or sand, high pressure and high temperature. The most common issues are:

• the
• Complete jamming of the valve – closure elements, it is impossible to open or close. the
• Pass the working fluid at the site of fastening of a cover and casing – the weakening of the fastener or the wear strip. the
• Pass liquid through pipe in the closed position of the valve – contact with solid foreign substances between the wedge and the working surface of the body.

In some cases, repair of valves is not advisable because of its deterioration and require complete replacement of the valve. To select the model with the help of online directory site of companies engaged in supplying them to the domestic market from trusted manufacturers.