Cock pneumatic valve structure

with hole plug body as the opening and closing parts of pneumatic, hydraulic pneumatic control valve, plug valve pneumatic valve, butterfly valve, DF - C, DF - C type wafer fluorine-butterfly butterfly valve pneumatic valve. Plug with pneumatic valve rod rotation, in order to realize the opening and closing action. Small cock without packing pneumatic valve is also known as ''. More than cock pneumatic valve plug body for cone ( There are also the cylinder) , cooperate with pneumatic valve cone hole surface of sealing pair. Cock pneumatic valve is to use one of the first pneumatic valve, simple structure, switch quickly, fluid resistance is small. Ordinary cock pneumatic valve on finishing the metal plug body and direct contact between the pneumatic valve to seal, so the sealing is poorer, opening and closing force is big, easy to wear and tear, usually can only be used for low ( Is not higher than mpa and small diameter ( Less than mm) The occasion. In order to enlarge the application range of cock pneumatic valve, have developed many new type of structure. Oil lubrication cock pneumatic valve is one of the most important ( See figure [ Pneumatic valve oil lubrication cock] ） 。 Special grease from the top of the plug body into the pneumatic valve body between the taper hole and the plug body, forming oil film to reduce the open-close torque, improve the tightness and service life. Its working pressure of mpa, the highest working temperature can reach ℃, maximum diameter of mm.
cock pneumatic valve passage comes in many forms. Common straight-through type is mainly used for cutting fluid. Three and four general formula cock pneumatic valve is suitable for the fluid reversing

cock of the pneumatic valve opening and closing is a hole in the cylinder, perpendicular to the axis of rotation of the channel, so as to achieve the aim of opening and closing the channel. Cock pneumatic valve is mainly be used for opening and closing medium pipeline and equipment.
cock pneumatic valve main advantages as follows:
, suitable for frequent operation, opening and closing fast, lightweight.
, small fluid resistance.
, simple structure, relatively small size, light weight, easy to maintenance. Good seal performance

and, not limited by the installation direction, the flow of medium can be arbitrary.
, no vibration, low noise.
cock pneumatic valve structure can be divided into the form of the structure tight pattern cock pneumatic valve, sealing plug pneumatic valve, pneumatic valve and oil filler plug plug four kinds of pneumatic valve. Cock pneumatic valve structure form according to the passage, four general formula can be divided into straight-through, three general formula, and three.
cock pneumatic valve installation and maintenance should be paid attention to the following:
, should have the position of the pneumatic valve handle rotation
and cannot be used for throttling.
, belt transmission mechanism of pneumatic ball valve should be installed upright.
female cock - pneumatic valve - Internal thread filler plug, internal thread through filler plug, rolling LanSiTing Angle, gland revolving door, corker, cross the lot;
cock - pneumatic valve - Flange packing cock, flange straight cock, flange gland flange LanSiTing Angle, the revolving door.