You alway worry about me. you head was covered by white hair. You have a warm heart. Which stared at me is alway full love;. You alway tell us to do the right.

When we use the cook top, the fire may be extinct because of the wind or overflowing water. In this case, the protector may cut off gas to prevent some accidents happening because of its leakage, such as poisoning, explosion or fire. In this way, it realizes its safety protection function. Cut off gas in sudden flameout condition.

This blog show about the valve! Monday, May 14, 2007. Also called cock or stop-cock valves, date back to ancient times, where they were developed for use in citywide Roman plumbing systems. Today, they remain one of the most widely used valves. Contact surfaces, and slightly lifts the plug to reduce the operating torque required to operate the valve. Are the three different types of rotary valves used in industrial plants. They are widely used in fluid-handling systems for flow co.

Retape dans le champ ci-dessous la suite de chiffres et de lettres qui apparaissent dans le cadre ci-contre.