, yongjia valve co. , LTD. , is set research and development, production, sales, service integration of manufacturing enterprises. Has a professional production of vacuum valve science and technology, advanced process equipment and testing equipment and strict quality management system. Product specifications complete, reliable performance, form a complete set of vacuum system is worth the preferred products. Briefly described under a vacuum valve: a, small high vacuum flapper valve body are high-tech precision casting precision casting technology and equipment, made of stainless steel castings is completely able to obtain dense structure. No & other; Porosity, loose, sand & throughout; Casting defects such as. Neat, beautiful shape. The valve leak rate is better than that of 10 - 10Pa. M3 / S。 Completely suitable for ultra high vacuum conditions. Second, GYC - JQ series electromagnetic high vacuum differential pressure type gas charging valve to prevent oil return performance improved greatly after the structure of high vacuum differential pressure type gas charging valve was improved, make product performance more reliable, more suitable for mechanical vacuum pump working condition requirements. There are three key can sex has improved: ( 1) 。 Close valve time shorten to < 0. 7 seconds, is more advantageous to prevent return oil; ( 2) 。 Open valve a slight delay time, only the vacuum degree reaches a certain value after the valve to open, if there is no pressure difference when back to normally open state, ( 3) 。 Products of vacuum leak rate was improved by the original low vacuum value to high vacuum, can satisfy completely the requirements of high vacuum conditions, such as higher requirements of the rotary vane pump inlet valve. Three, unique one-piece high vacuum regulating ball valve throttle mouth more superior one-piece high vacuum pumping speed regulating ball Industrial Valves adopts & other; V” Type throttle mouth makes adjusting pumping speed more superior, the main path of the exhaust tube mounted on single crystal furnace is used to adjust the extraction rate of furnace body, changed the old & other; Butterfly Industrial Valves + baffle valve & throughout; Combinations. Fourth, GDC - J and DDC - high vacuum flapper Industrial Valves JQ vacuum charging valve coil electricity for a long time will not produce high-temperature scientific circuit control and electromagnetic design makes the electromagnetic valve coil is always working in high efficient province work condition. Under the condition of room temperature 30 ℃ continuous work 72 hours of coil temperature appearance & le; 55 ℃, the product shell temperature is lower. And electronic components don't hot. That will never burn out the coil of phenomenon happens.

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