Are there any problems with the horizontal installation of the pneumatic butterfly valve on the horizontal pipe? Is it serious?
Horizontal pipe, pneumatic butterfly valve, valve level installation problems. Hidden security problems.1, pneumatic butterfly valve stem to vertical installation, horizontal installation, the valve stem sealing effect of internal gravity packing layer, resulting in loose packing, the risk of leakage, and the pneumatic valve of the valve positioner will reduce the accuracy of adjusting clearance, cause. Butterfly valve sealing surface may also be deformed because of the stem deformation and wear.2, the valve installation should be conducive to the safe and safe valve, valve operation is conducive to repair and disassembly.3, the horizontal pipe, the valve stem is best vertical upward, should not be installed down the valve stem. The valve stem is installed downwards, which is inconvenient to operate, inconvenient to maintain, and easy to corrode the valve and cause an accident. Landing valve should not be installed askew, so as not to operate awkwardly.4. Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valve is used with the valve stem rotation do open and close to the main valve shut-off valve used to do to enable the action of gas, can be designed to have a regulation or a section of the valve and control function, the butterfly valve in the low pressure large diameter pipeline on the use of more and more. Pneumatic butterfly valve classification: stainless steel pneumatic butterfly valve, hard sealing pneumatic butterfly valve, soft sealing pneumatic butterfly valve, carbon steel pneumatic butterfly valve.
Vertically installed, generally vertical installation, but in some places can not be installed vertically, but also installed horizontally, generally no impact.
Especially the butterfly valve pneumatic valve is generally installed vertically, horizontally mounted, the stem sealing effect of internal gravity packing layer, resulting in loose packing, the risk of leakage, and the pneumatic valve of the valve positioner will reduce the accuracy of adjusting clearance, cause.In addition, the butterfly valve sealing surface may also be deformed because of the stem deformation and wear.This is the danger, not necessarily be a problem, but the large-diameter valves such as DN150 or more dangerous, if you have a small caliber valve (butterfly valves are generally large, with a small caliber ball valve), will do some suggestions, safety, adjust the installation position.
Especially the butterfly valve pneumatic valve is generally installed vertically, horizontally mounted, the stem sealing effect of internal gravity packing layer, resulting in loose packing, the risk of leakage, and the pneumatic valve of the valve positioner will reduce the accuracy of adjusting clearance, cause.In addition, the butterfly valve sealing surface may also be deformed because of the stem deformation and wear.This is the danger, not necessarily be a problem, but the large-diameter valves such as DN150 or more dangerous, if you have a small caliber valve (butterfly valves are generally large, with a small caliber ball valve), will do some suggestions, safety, adjust the installation position.This answer is adopted by the questioner
