閥門由于要適應各種不同工況條件的要求廣泛應用于國計民生的各個領域。200X減壓閥因而它品種繁多數量巨大。國的閥門制造業十分龐大，閥門廠家數以千計，普及全國，目前我國已成為全球閥門產量和市場需求量最大的國家之一。 從我們上個世紀的“十閥九漏”，到現在不少產品出口國外，我國閥門行業取得很大進步。
       據不完全統計，當前我國閥門企業約6000余家，而其中年產值超過500萬元的有900余家。閥門的產值是風機壓縮機和泵三者的總和，是占整個機械工業產值約5％。同時，作為技術裝備的重要組成部分，尤其是在石化、電力、冶金、石化、城市供排水系統中，閥門更是起著非常關鍵作用，而且用量非常大。但是國內閥門行業大多為中小企業，良莠不齊300X緩閉止回閥，年產值超億元的不到10家，即使與國內其他機械行業相比，無論在裝備上還是技術水平上也存在很大的差異，真正具有獨立研究開發高端產品能力的單位很少。 但來自中國通用機械工業協會閥門分會的資料顯示，在我國每年閥門成交額高達500億元上下，卻有100多億元的閥門被國外閥門企業占領，想要改變這種現狀，就得通過提高閥門質量創新技術是關鍵的關鍵。
        我國現有廠辦研究所12個，專業研究所2個，從事產品開發及閥門研究的科研人員約6000人，一個部級檢測中心和兩個分中心，能進行通用閥門、通用閥門和疏水閥的性能試驗以及對其的功能性研究，相信國內的閥門行業將會得到迅速地發展。

Valves are widely used in various fields of national economy and people's livelihood due to the requirements of various working conditions. The 200X pressure reducing valve therefore has a huge variety of products. China's valve manufacturing industry is very large, with thousands of valve manufacturers spreading across the country. At present, China has become one of the countries with the largest valve output and market demand in the world. From our “ten valves and nine leaks” in the last century, to now many products are exported abroad, China's valve industry has made great progress.
       According to incomplete statistics, there are currently more than 6,000 valve companies in China, of which more than 900 have an annual output value of more than 5 million yuan. The output value of the valve is the sum of the blower compressor and the pump, which accounts for about 5% of the output value of the entire machinery industry. At the same time, as an important part of technical equipment, especially in petrochemical, electric power, metallurgy, petrochemical, and urban water supply and drainage systems, valves play a very key role, and the amount is very large. However, most of the domestic valve industry is small and medium-sized enterprises. Good and bad 300X slow-closing check valves are uneven. There are less than 10 companies with an annual output value of more than 100 million yuan. Even compared with other domestic machinery industries, there is a great deal of equipment and technical level. The difference is that there are few units that truly have the ability to independently research and develop high-end products. However, data from the Valve Branch of the China General Machinery Industry Association shows that the annual turnover of valves in China is as high as 50 billion yuan, but more than 10 billion yuan of valves are occupied by foreign valve companies. If you want to change this situation, you must improve Valve quality innovation technology is the key to it.
        There are 12 factory-run research institutes and 2 professional research institutes in China. There are about 6000 scientific researchers engaged in product development and valve research. There is one ministerial-level inspection center and two sub-centers, which can carry out general valves, general valves and traps. The performance test and functional research on it, I believe that the domestic valve industry will develop rapidly.