| "Universal Valve" in three categories
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| Release time：2014.04.28 News source：Taizhou Lixin Pneumatic Tool Plant Browsing number： |
According to informed Lixin fittings , valves, is one of the car parts, our universal valve into the following three categories:
( 1 ) threaded connection valves
This connection is usually out of the ends of the valve processed into cone or straight pipe thread , you can connect it to taper pipe thread fittings or piping. Because of this connection may appear larger leak channel , it can be used sealants, sealing tape or packing to block these channels . If the body of the material can be welded , but very different expansion coefficients , or large temperature variation amplitude range , honey threaded connection must be sealed welding. The main valve is threaded through the valve in nominal 50mm or less. If the diameter size is too large , installing and sealing the connection part is very difficult.
For ease of installation and removal of the valve threaded connection , the piping system in place on the available fittings. Nominal diameter less than 50mm valve tubes can be used as a hub fittings, threaded pipe sleeve section will connect the two parts together .
( 2 ) Flanged valves
Flanged valves , which are relatively easy to install and remove . But bulky valve threaded connection than the corresponding price high prices . Therefore, it is suitable for a variety of diameter and pressure pipe connections. However , when the temperature exceeds 350 degrees , since the bolts, washers and flange changed relaxation, but also significantly reduce the load on the bolt , to force the flange may have a large leak .
( 3 ) valve welded connections
This connection is suitable for all kinds of pressure and temperature , when used under the conditions of load moment is more reliable than the flange connection. However, removal and re- installation of the valve welded connections are more difficult, so its use is generally limited to long-term reliable operation , or use of the conditions could be carved , high temperature applications . If the pipe thermal power stations , nuclear engineering, ethylene project.
Nominal diameter less than 50mm welding socket weld valves typically have a flat side to undertake the charge pipe . Since the formation of the gap between the socket weld socket and pipe , and thus has the potential to crevice corrosion of certain media , while vibrating pipe joints causes fatigue , and therefore the use of socket weld subject to certain restrictions .
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Name：Taizhou Lixin Pneumatic Tool Plant
Add：Economic Development Zone, Yuhuan City, ZheJiang Province, China.
Mobile：+86-18967648088
+86-18969685855
Fax：0576-87253572
Web：http://www.lxqdgj.com |
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