Air cryogenic pneumatic valve _ electric pneumatic valve _ stainless steel at low temperature low temperature air valve industry valve _ pneumatic components factory

Pneumatic pneumatic valve pneumatic cryogenic pneumatic valve overview: pneumatic pneumatic valve is widely used in molecular sieve at low temperature, low temperature cooler, low temperature methanol washing, such as liquefied natural gas (LNG), and ventilation systems; Structure of long neck, long neck length is calculated according to the actual working condition, can also be designed according to customer's requirements. （ The process parameters) Electric pneumatic valve technology at low temperature parameters: pressure rating: Class150 ~ Class2500 extremely low temperature: - 196 ℃ nominal size: floating pneumatic valve as NPS1 / fixed pneumatic valve is NPS2 ~ 2 ~ NPS4 NPS16 structure forms: castings, forgings, two chip, chip device: operation manual, worm gear, electric valve actuators, pneumatic valve actuator pneumatic valve technical specification of stainless steel low temperature: 1, design and manufacture according to API 6 d, BS5351 2, structure and specific length according to ASME B16. 10 rule 3, the size of the flange connection in accordance with the ASME B16. 4, the pressure of the shell material - five rules According to ASME B16 temperature. 5 rules, test and inspection according to provisions of API598 pneumatic cryogenic pneumatic valve features: (1) lumen automatic relief function: pneumatic pneumatic valve closed at low temperature, the free in pneumatic valve lumen of medium when temperature increases, can make the lumen abnormal pressure rise, lumen medium can through their own forces to push the seat automatic relief, ensure the safety of the stainless steel pneumatic valve at low temperature. (2) the electric pneumatic valve in low temperature of low temperature test: the low temperature test device for pneumatic valve test. (3) pneumatic cryogenic pneumatic valve parts after rough machining, cryogenic processing, to ensure the parts under the low temperature stability of shapes and sizes. Electric pneumatic valve in low temperature structural characteristics: 1, the pressure of a material can withstand the medium temperature change caused by the expansion and contraction, the structure of the sealing parts, when the temperature changes will not produce permanent deformation. Used for - The working condition of 100 ℃, electric pneumatic valve parts in low temperature should be carried out before finishing the cryogenic treatment, the parts in the liquid ammonia tank for cooling, when parts - temperature is reached , start insulation 1-192 ℃ 2 hours, and then remove the box outside natural treatment to room temperature, revisit cycle 2 times. 2, stainless steel, low temperature of the pneumatic valve bonnet with long neck design, its purpose to protect the function of the stuffing box, the packing box in a far away place at low temperature, to ensure that the packing sealing effect, at the same time can also be wrapped cold insulation materials, prevent cold energy loss. Long neck long neck can be used according to the temperature and the thickness of the insulating materials to choose different length. When packing seal effect to reduce, can add grease from among stuffing box form oil seal layer, reduce the pressure difference of stuffing box, improve the sealing performance. 3, using temperature below - 100 ℃, the valve stem material after chrome plating or nitriding process, to improve the surface hardness of the valve stem, improve the reliability of packing seal. 4, stainless steel, low temperature pneumatic valve is to prevent abnormal structure of booster, due to the electric pneumatic valve after gasification medium at low temperature, the volume swelling, abnormal pressure will rise, when stainless steel pneumatic valve lumen of low pressure, pneumatic valve lumen and imported connected, or in the air cryogenic pneumatic valve inlet side pressure relief valve, guarantee the safety of the pneumatic valve is used. 5, stainless steel, low temperature pneumatic valve with gasket at room temperature, low temperature condition and under the temperature change can reliable sealing and resilience. Pneumatic components factory specializing in the production of stainless steel valve industry cryogenic pneumatic valve manufacturer, has good sealing performance, long life and other characteristics, deeply the general customers trust and support. Customers can choose according to the pipe connection standard American standard low temperature pneumatic valve, also can choose according to drive electric cryogenic pneumatic valve and pneumatic pneumatic valve at low temperature; Configuration of the electric valve actuators are equipped with electric explosion-proof device, or a pneumatic valve actuator, pneumatic valve is equipped with triple pieces, so that our sales staff for selection and quotation. : cryogenic pneumatic valve working principle of low temperature electric cut-off valve pneumatic cut-off valve pneumatic butterfly valve at low temperature _ _ low temperature electric butterfly valve _ stainless steel low temperature at low temperature