According to the working pressure of low vacuum valves, high vacuum valves and ultra-high vacuum valves.
According to the structural characteristics of butterfly valves, ball valves, diaphragm valves, flapper valves, flapper valves, angle valves, straight-through valves, three-way valve.
According to the principle of transmission manual, pneumatic, electric, electromagnetic. Pneumatic pneumatic pilot is generally the process of implementing the action cylinder can also be used to control the pilot valve cylinder to perform the action process. Electric hand, electric dual-use, when the power outage can be manually operated.
According to the material stainless steel, carbon steel, aluminum alloy as the main material of the valve.
According to the dynamic seal material can also be divided into metal seal and non-metallic seal valve.
Seal with O-shaped rubber ring General vacuum seal leak rate of 10-4Pa.L / S, the vacuum in the shaft movement is not high, can be used for less demanding conditions of high vacuum; shaft seal for the metal corrugated Tube seal, the leakage rate of 10-7Pa.L / S, suitable for use under ultra-high vacuum conditions.
Universal vacuum valve purposes:
Butterfly valve for the direct form, hand, gas, electricity three drive by the user decision. Manual butterfly valve opening angle adjustable; intelligent pneumatic and electric butterfly valve opening angle is also adjustable.
Flapper valve used in demanding vacuum or pipe size requirements of the occasion. All-pass, the valve leakage rate of 10-7Pa.L / S, two-way seal. Drive hand, gas, electric by the user's decision. Pneumatic and electric all with signal feedback device.
Diaphragm valves and ball valves for the straight-through, and can be used in the coexistence of positive pressure and vacuum occasions. Drive hand, gas, electric by the user's decision.
Flapper valve used in the vacuum pipe corner and tee. Drive mode for the hand, gas, electromagnetic, electric decisions by the user. One GDC-J electromagnetic high vacuum baffle valve for the metal bellows seal, its wide range of applications, but also when the inflatable valve; installation location can be arbitrary, can be anti-top atmospheric pressure, and a feedback signal output.
Electromagnetic vacuum valve with vacuum valve and electromagnetic vacuum pressure valve is designed to prevent mechanical vacuum pump back to the vacuum valve, installed in the mechanical vacuum pump inlet, and opened and closed simultaneously with the pump. Generally can not be used elsewhere, that can not be used for deflation in the vacuum system. The advantage of using electromagnetic vacuum pressure differential valve is small power consumption, energy saving; DN50 body material is aluminum, light weight, small size, the valve plate closing speed.
Suitable
for UV resistant finishing of various fabrics.
It maximally retains the
fluorescence of the whitening fabric, has little influence on the whiteness of
the fabric, does not affect the shade. It can prevent the fiber from
degradation and brittle damage due to sunlight irradiation, and improve the
anti-aging performance.
UV resistant finishing, Ultraviolet Protection Factor, 280 ~ 320nm, anti UV finishing, sunlight fastness improving finish
Dymatic Chemicals, Inc. , https://www.dymachem.com