The Air scissor lift valve is a valve shaft movement guide section

the two gate valve sub intake valve and exhaust, its role is to open and close the intake and exhaust channel, which consists of a header portion and the rod components. A head for opening and closing the intake and exhaust passage, the valve stem portion is used to guide the movement. Ordinary alloy steel intake valves, exhaust valves are made ​​of heat-resistant alloy, because the exhaust valve head in direct contact with the combustion gases, heat seriously.
In order to ensure the use of the scissor pallet truck valve head and valve seat close fit between the tapered joints and thermal conductivity, valve head and valve seat, and by grinding. The angle between the cone and the top plane is called the taper angle of the valve, the valve cone angle of the commonly used 30 ° and 45 °. The valve is a valve shaft movement guide section. Common valve shaft with the rear cut grooves for the installation of the conical locking tabs.
Valve seat: the cylinder valve seat is on the (side-mounted valve) or cover (overhead valve), the direct electric pallet jack processing of the circular seat hole, play with it and the valve seal. Some wear-resistant alloy cast iron valve seats available for processing into the seat, mounted on the cylinder block or cylinder head.
Valve guide: its role is to guide the valve for proper axial movement, while the heat will be transmitted to the valve stem portion of indirect water jacket. To facilitate repair, replacement, valve guides made ​​separately and then pressed into the cylinder block (or cylinder head). When the valve guides pressed into the cylinder block (or cylinder head), there should be a certain amount of interference and indentation depth, in order to ensure good heat transfer.
Valve spring: its role is to ensure the valve and valve seat seal, and to mitigate and overcome the inertia forces the valve and other transmission parts produced, to prevent damage to normal working gas distribution agencies.