1, flange connection, which is much used in the connection form of valve. According to the joint surface shape and can be divided into the following kinds: 1) Smooth type: used for low pressure valve. Processing more convenient lenticular: high work pressure, can be used in hard gasket mortise type: plastic deformation is larger washers are available, and in the corrosive medium is used more widely, the sealing effect is better. 4) Trapezoidal groove: with oval metal ring gasket, used to the work pressure of 64 kg/cm2 or valves, valve or high temperature. Lens: the washer is lens shape, made of metal. For a working pressure of 100 kg/cm2 or high pressure valve, or high temperature Industrial Valves. 6) O-ring type: this is a relatively new form of flange connection, it is with the emergence of a variety of rubber o-ring, and developed, it is reliable in sealing effect than ordinary flat washer. 2, connected to the clamp bolts directly to the Industrial Valves and pipe clamp wear together both ends of connection form. 3, butt welding. 4, threaded connection this is a simple connection method, often used for small valves. Divides two kind of situations: direct seal: internal and external screw thread sealing effect directly. In order to ensure that joint not leak, often filled with lead, cotton and ramie thread woven and ptfe teflon tape; The ptfe teflon tape, became more and more widely used; The corrosion resistance of the material is very good, good sealing effect, easy to use and preservation, remove, can be fully removed, it because it is a layer non-viscous film, much more superior than lead, cotton and ramie thread woven. Indirect seal: the power of the screw tight, transfer to the gasket between the two plane, plays a role of sealing washer. 5, card sets of connection, in our country developed in recent years, the connection and sealing principle of it is that when the screw nut, card sets of pressure, the blade is biting into the tube outer wall and card sets of male cone and cone closed and joint under pressure, and thus can be reliably prevent leakage. The advantages of this type of connection is: 1) Small volume, light weight, simple structure, disassembling easy; 2) The relay is strong, wide use, resistant to high pressure, 1000 kg/cm2) , high temperature ( 650℃) Shock and vibration 3) Can choose a variety of materials, suitable for corrosion protection; 4) Machining accuracy is not high; High altitude makes the pipes easier to install. At present, the card sets of connection form, has been used in some small valve products in China. 6, clamp connection this is a fast connection method, it only need two bolts, often apply to remove the low pressure valve. Within 7, since the tight connection above all kinds of connection form, all is the use of force to offset the medium pressure and sealed. Here using medium pressure since the tight connection. Its sealing ring with cone, with medium relative to one side with a certain Angle, within the medium pressure to the cone, and passed to the sealing ring, on the cone Angle, produce two component, a parallel to the center line of the body to the outside, another pressure to the valve body wall. This component is the force behind. The more the greater the medium pressure, since the tight force is big. So this kind of connection form, suitable for high pressure valves. Than the flange connection, to save a lot of material and manpower, but also need a certain pre-tightening force, so that the pressure in the valve is not high, the use of reliable. Use since the tight sealing principle of the Industrial Valves and is generally high pressure valve.
Mech allocates customer service resources to the platform where their customers are most vocal.
If you are looking for cast iron gate valve water gate valve, we have plenty of them in our store. We have resilient seal gate valve and many others. Visit Mech Valve to know more.
You can get more information from Mech Valve for on sale. welcome to visit us and send your inquiry!
Based on the rising stem gate valve, here are the top compliance challenges businesses face, and what you can do to make them easier on ourselves.