The pressure is lessen than atmospheric pressure, and the pressure drop on the disc should not exceed one kgf / cm2. The operating temperature of the medium depends on the method in which the device is utilized. The temperature typically does not exceed the assortment of -70 ~ + 150 ° C. The primary requirements for this kind of valve are to ensure a superior degree of tightness in the connection and the tightness of the composition and gasket substance. Vacuum valves can be divided into four teams according to media pressure:
1) Very low vacuum valve: medium strain p = 760 ~ 1mmHg
2) Medium vacuum valve: p = 1 × ten-3 mm Hg.
three) Significant vacuum valve: p = 1 × ten-four ~ one × ten-seven mm Hg
4) Extremely-superior vacuum valve: p≤1 × 10-8 mm H
>Vacuum valve greatly used in the valve stem for linear motion of vacuum bellows globe valve. Gate valves are far more limited, but for larger sized diameters, ball valves, plunger valves and butterfly valves are also offered. Plug valves for vacuum valves have not been promoted, since the plug valves require to be lubricated with oil, so that oil vapor may possibly enter the vacuum program, which is not authorized. Vacuum valve closures are sealed with rubber or metallic seals. The bellows of the bellows globe valve are built of stainless metal, significant zinc brass JI80, plastic and other materials. Compact-diameter (diameter underneath ten mm) world valve closures can be sealed with a diaphragm. Lower and medium vacuum can use spherical plug valve
>The vacuum valve has the next trait
>The tension is reduced than atmospheric strain, and the stress fall on the disc will have to not exceed 1 kgf / cm2. The operating temperature of the medium relies upon on the approach in which the machine is made use of. The temperature usually does not exceed the selection of -70 ~ + a hundred and fifty ° C. The principal valves of Shanghai Shenhong Valve Co., Ltd. are: strain cutting down valve (gasoline stress lowering valve, adjustable force cutting down valve, bellows lowering valve, piston minimizing valve, steam cutting down valve, pilot reducing valve, air Force cutting down valve, nitrogen tension cutting down valve, h2o strain decreasing valve, self-operated strain minimizing valve, proportional tension decreasing valve), basic safety valve, thermal insulation valve, cryogenic valve, ball valve, world valve, gate valve, verify valve, butterfly valve, filter Machine, discharge valve, diaphragm valve, plug valve, plunger valve, harmony valve, regulating valve, entice valve, pipe clamp valve, blow down valve, exhaust valve, mud discharge valve, pneumatic valve, electric powered valve, substantial tension valve, medium Pressure valve, very low force valve, hydraulic manage valve, vacuum valve, rubber lined valve, fluorine lined valve. The essential necessities for this form of valve are to guarantee a significant diploma of tightness in the connection and the tightness of the framework and gasket produc
>Vacuum valve greatly utilized in the valve stem for linear movement of vacuum bellows world valve. Gate valves are additional minimal, but for larger diameters, ball valves, plunger valves and butterfly valves are also accessible. Plug valves for vacuum valves have not been promoted, for the reason that the plug valves will need to be lubricated with oil, so that oil vapor could enter the vacuum program, which is not allowe
>Vacuum valve closures are sealed with rubber or metallic seals. The bellows of the bellows globe valve are made of stainless metal, large zinc brass JI80, plastic and other supplies. Tiny-diameter (diameter underneath ten mm) world valve closures can be sealed with a diaphragm. Lower and glove box medium vacuum can use spherical plug valve
>The vacuum valve has the adhering to features: The pressure is lower than atmospheric pressure, and the tension drop on the disc must not exceed 1 kgf / cm2. The working temperature of the medium relies upon on the system in which the device is utilised. The temperature generally does not exceed the range of -70 ~ + a hundred and fifty ° C. The simple needs for this style of valve are to make sure a substantial degree of tightness in the connection and the tightness of the composition and gasket substance.
1) Very low vacuum valve: medium strain p = 760 ~ 1mmHg
2) Medium vacuum valve: p = 1 × ten-3 mm Hg.
three) Significant vacuum valve: p = 1 × ten-four ~ one × ten-seven mm Hg
4) Extremely-superior vacuum valve: p≤1 × 10-8 mm H
>Vacuum valve greatly used in the valve stem for linear motion of vacuum bellows globe valve. Gate valves are far more limited, but for larger sized diameters, ball valves, plunger valves and butterfly valves are also offered. Plug valves for vacuum valves have not been promoted, since the plug valves require to be lubricated with oil, so that oil vapor may possibly enter the vacuum program, which is not authorized. Vacuum valve closures are sealed with rubber or metallic seals. The bellows of the bellows globe valve are built of stainless metal, significant zinc brass JI80, plastic and other materials. Compact-diameter (diameter underneath ten mm) world valve closures can be sealed with a diaphragm. Lower and medium vacuum can use spherical plug valve
>The vacuum valve has the next trait
>The tension is reduced than atmospheric strain, and the stress fall on the disc will have to not exceed 1 kgf / cm2. The operating temperature of the medium relies upon on the approach in which the machine is made use of. The temperature usually does not exceed the selection of -70 ~ + a hundred and fifty ° C. The principal valves of Shanghai Shenhong Valve Co., Ltd. are: strain cutting down valve (gasoline stress lowering valve, adjustable force cutting down valve, bellows lowering valve, piston minimizing valve, steam cutting down valve, pilot reducing valve, air Force cutting down valve, nitrogen tension cutting down valve, h2o strain decreasing valve, self-operated strain minimizing valve, proportional tension decreasing valve), basic safety valve, thermal insulation valve, cryogenic valve, ball valve, world valve, gate valve, verify valve, butterfly valve, filter Machine, discharge valve, diaphragm valve, plug valve, plunger valve, harmony valve, regulating valve, entice valve, pipe clamp valve, blow down valve, exhaust valve, mud discharge valve, pneumatic valve, electric powered valve, substantial tension valve, medium Pressure valve, very low force valve, hydraulic manage valve, vacuum valve, rubber lined valve, fluorine lined valve. The essential necessities for this form of valve are to guarantee a significant diploma of tightness in the connection and the tightness of the framework and gasket produc
>Vacuum valve greatly utilized in the valve stem for linear movement of vacuum bellows world valve. Gate valves are additional minimal, but for larger diameters, ball valves, plunger valves and butterfly valves are also accessible. Plug valves for vacuum valves have not been promoted, for the reason that the plug valves will need to be lubricated with oil, so that oil vapor could enter the vacuum program, which is not allowe
>Vacuum valve closures are sealed with rubber or metallic seals. The bellows of the bellows globe valve are made of stainless metal, large zinc brass JI80, plastic and other supplies. Tiny-diameter (diameter underneath ten mm) world valve closures can be sealed with a diaphragm. Lower and glove box medium vacuum can use spherical plug valve
>The vacuum valve has the adhering to features: The pressure is lower than atmospheric pressure, and the tension drop on the disc must not exceed 1 kgf / cm2. The working temperature of the medium relies upon on the system in which the device is utilised. The temperature generally does not exceed the range of -70 ~ + a hundred and fifty ° C. The simple needs for this style of valve are to make sure a substantial degree of tightness in the connection and the tightness of the composition and gasket substance.