(a) the composition of the guq-150f type of the shanghai aerodynamic vacuum valve: the correct selection of the type and specification of the valve requires an understanding of the model of the vacuum valve; the company's model for vacuum valves is substantially similar to the zbj78016-89 vacuum valve model, method of preparation. The product model consists of two components, basic and support models, separated by a short line, and the model type is as follows: ** high vacuum 10 ~ 10 7 pa (760 ~ 10 - 9 t) — c; and the upper sea high-water aerodynamic vacuum valve guq-150f has the following characteristics: pressure below atmospheric pressure and pressure on valves cannot be reduced by ** 1 kg/cm2. The working temperature of the medium depends on the process by which the device is used. Temperatures generally do not exceed the range of -70 ~ 150 °c. The basic requirements for such valves are to ensure the high sealing of the connection and the confidentiality of the structure and gasket material. The medium pressure vacuum valve can be divided into four groups: 1) low vacuum valve: medium pressure p = 760 ~ 1 mm mercury column : p = 1 x 10-3 mm mercury column. 3) high vacuum valve: p=1x10-4 ~1x10-7 mm mercury column. 4 ** high vacuum valve: p≤1x10-8 mm mercury column. Conditions for the use of guq-150f for the aerodynamic vacuum valve in shanghai: 1. The medium is pure air or non-corrosive gas. 2. The temperature of the medium is determined by the higher temperature at which rubber is used. Product name: aerodynamic vacuum valve guq-150f product type: guq-150f target: water, vapour, acid, alkaline applicable temperature: -29°c-80°c, applicable pressure: 5x10-7pa ~0. 6mpa drive method: aerodynamic, electric, manual control voltage: dc24v, ac220v, control mode: regulation type, switch type, intelligent high-water air vacuum valve guq-150f is the medium stream applicable to the connection or disconnection of the pipe in a vacuum system. The valve uses a re-transform gas, electro-regulated valve drive, which can be controlled by an external power switch (manual switch or computer control) or an external input signal. Air-activated vacuum valves are defined as valves operating under atmospheric pressure, i. E. In a vacuum-negative state, and are generally referred to as air-activated negative-pressure valves, mainly for switch control in a vacuum system or for the mediation of traffic. Air-activated vacuum valves are particularly demanding for material and cleaning, as ensuring that there is no volatilizer, and with enhanced sealing, can effectively prevent atmospheric impurities from entering the inner medium of the valve. Air-activated vacuum valves can be installed at any location, not only for use in vacuum pipe systems, but also operate under certain pressures. Shanghai aero-hawa vacuum valve guq-150f characteristics: 1. Valves are straight-through, sealed by the surface, can be used in a high vacuum and can be used in low-pressure systems to achieve the same advantages of positive and negative pressure. High temperature, grinding, oil, corrosive and long operational life. 3. Aerodynamic vacuum valves use source pressure to control the valves, drive them away, and can be activated in a short period of time, with simple connections, compact structures and stable movements. 4. It can be installed at any location and in many ways connected to meet complex situations. 5. Aerodynamic vacuum valves have a simple/sealed structure, and the selection of different materials and functions appears to correspond to different conditions. 6. Air-activated vacuum valves are widely used in the fields of photovoltaic, dairy, alcohol, bioengineering, food and chemical work. 7. The applicable working medium is an acid, alkaline gas or liquid. Applicable media temperature: standard seal - 25 + 120 degrees high temperature seal - 25 + 230 degrees. The main performances of the shanghai takakawa aerodynamic vacuum valve guq-150f: (1), leakage rate: 1. 3 x 10-9 pa. M3/s(2), pressure range: 5 x 10-7 pa ~ 0. 6 mpa(3), work temperature: -30°c ~ +232°c (4), gas source pressure: 0. 4 ~0. 6 mpa(5), work media: water, vapour, acid, alkali (6), installation position: any (7), rationale: 90° aerodynamic executor drive valve rotation to switch purposes. Aerodynamic vacuum valve guq-150f primary component material: 1 valve: 304, 316l; 2 sphere: 316l; 3 sealed: enhanced polytetrafluoroethylene
