The assembly can be on an opposite side of the valve body/bonnet to create a backseat seal on a balancing stem/bonnet to allow changing the stem packing on the balance stem side while maintaining pressure integrity.doi:US20140000907Alfred Olvera...
释义: 全部,落座,后座,后座仰臣式,后座密封 更多例句筛选 1. The valve bonnet may now be removed. There may be a slight leakage, as the metal-to-metal backseating does not provide a drip-tight seal. 现在可以拆卸阀盖。如果金属-对-金属后座没有实现无滴漏密封,则可能会有轻微的泄漏。 www.h6688...
dear all, what is back seating of valve i would like to know , thankyou Post a Reply... Viewed 11458 timesThursday, February 23, 2006 By: Glencannon On the top of the valve spindle is cut a tapered plug which matches with a seat cut into the top of the bonnet. When the valve ...
发明名称: Back-seating of rotary valve stem 发明人: NEVREKAR, VENKATESH R. 申请人: 申请日期: 1994-03-10 申请公布日期: 1995-04-18 代理机构: 代理人: 地址: 摘要: A rotary valve assembly comprising a valve body having a stem passageway in communication with the valve body cavity which...
Seating load and resultant tightness is dependent uponback pressure. 阀座密封负载和组合的紧密性是与返回压力密切相关. 互联网 Back - pressure protection is needed to prevent damage to the regulator. 需要回压保护,以防止损坏调整器. 互联网 This means that on exhaust stroke, the engine has to push ...
A hard, durable valve seat or “valve seat protector” is provided in a plastic backwater valve with a flapper valve. The seating is more resistant to wear caused by cleaning, giving it a longer useful life despite the use of a less durable, less expensive plastic material for ...
To solve this problem,it is highly recommended to use a balanced bellows safety relief valve.The effective area of the bellows is substantially the same as the seating area of the disc on the nozzle and the bellows is vented to atmosphere through a hole drilled into the bonnet wall....
4.Back seating design protects the packing in fully open position 5.Non-rotating stem tip 6.100% factory tested Available in size: 1/16 - 2 in (2mm to 50mm) End Connections:NAILOK Compression, MNPT, FNPT, JIC, Tube Stub,BSPP, BSPT, Pipe Weld, Tube Buttweld, T...
pressurized fluid introduced from the air port; a first diaphragm coupled to the displacement mechanism, for making displacement integrally with the displacement mechanism; and a seat section provided to face to the fluid passage, for seating the first diaphragm or making separation from the first ...
Analysis and treatment for seal cast back problem of ball valve Cast back clamp and mounting component Use of Cast Magnesium Back Frames in Automotive Seating Method of Development, Assessment and Extension of Agriculture Technology by the Back-Cast Approach ...