A multi-circuit protection valve is provided for a vehicle compressed-air supply device. A first port for a service brake includes two mutually separate service brake circuit ports for a first service brake circuit and a second service brake circuit. The two service brake circuit ports are protected by first and second service brake circuit overflow valves, respectively. A second port for a parking brake, is protected by an overflow valve, wherein one of the two service brake circuits can be filled preferentially. The overflow valve has two active surfaces which can be acted on with a valve inlet pressure and a valve outlet pressure, respectively. The overflow valve has a third active surface, which is acted on with the service brake pressure from the non-preferentially filled service brake circuit. Forces generated by the three active surfaces counteract a closing force in order to open or hold open the overflow valve. Multi Circuit Protection Valve Tractor Protection Valve,Trailer Protection Valve,Bendix Tractor Protection Valve,Circuit Protection Valves With Sensors SHANGQIU FLAT WORLD MACHINERY CO.,LTD , https://www.flatworldtrucks.com
It is understood that for the outstanding problems of the current small-scale equipment manufacturing enterprises, scattered distribution, and low industrial concentration, PetroChina will gradually promote joint reorganization among enterprises. Encourage related manufacturing companies to adopt horizontal reorganization through various means such as asset reorganization, mutual shareholding, custody, and joint procurement, and PetroChina will accelerate the demonstration and approval rhythm for the joint reorganization proposal put forward by the company. At the same time, it will increase investment support for restructured enterprises, prioritize investment projects, and increase the proportion of funds invested by group companies.
For the key technologies and equipment that restrict the development of the oil and gas industry, CNPC will jointly develop with related companies. The proportion of CNPC’s investment in the industrialization of key technology and equipment shall not be less than 50%. It is difficult to promote the application of major technology equipment for independent R&D and manufacturing. The status quo, China National Petroleum Corporation will encourage companies to purchase and use independently developed major technical equipment. For the internal companies that purchase the first prototype, the proportion of CNPC’s investment is no less than 70%. The support for major technical equipment in the stage of promotion and application shall be increased. For internal companies that purchase such equipment, PetroChina will prioritize the investment plan, and Give proper financial support.
PetroChina wants to make equipment manufacturing a main business
The reporter learned from China National Petroleum Corporation that CNPC will focus on building equipment manufacturing industry in the next five years, making it one of the main businesses of CNPC. During the “Eleventh Five-Year Plan†period, PetroChina’s equipment manufacturing industry’s sales revenue reached 26 billion yuan, and the sales profit rate and investment return rate reached more than 8%.
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