Urban gas valves: Urban gas accounts for 22% of the entire natural gas market, with a large amount of valves and many types. We mainly need ball valves, plug valves, pressure reducing valves, and safety valves.

城市供熱用閥門：城市代熱系統中，需用大量的金屬密封蝶閥、水平平衡閥及直埋式球閥、因這類閥解決管道縱向、橫向水力失調問題，達到節能、代熱平衡的目的。

Valves for urban heating: In urban heat generation systems, a large number of metal sealed butterfly valves, horizontal balance valves, and directly buried ball valves are required to solve the problem of longitudinal and transverse hydraulic imbalance in pipelines, achieving the goal of energy conservation and heat generation balance.

城市建筑用閥門：城建系統一般采用低壓閥門，目前正向環保型和節能型方向發展。環保型的膠板閥、平衡閥及中線蝶閥、金屬密封蝶閥正在逐漸取代低壓鐵制閘閥。國內城市建筑需用閥門多為平衡閥、軟密封閘閥、蝶閥等。

Valves for urban construction: Urban construction systems generally use low-pressure valves and are currently developing towards environmentally friendly and energy-saving directions. Environmentally friendly rubber plate valves, balance valves, centerline butterfly valves, and metal sealed butterfly valves are gradually replacing low-pressure iron gate valves. The valves required for urban construction in China are mostly balance valves, soft sealing gate valves, butterfly valves, etc.

環保用閥門：國內環保系統中，給水系統主要需用中線蝶閥、軟密封閘閥、球閥、排氣閥（用于排除管道中的空氣）。污水處理系統主要需用軟密封閘閥、蝶閥。

Environmental protection valves: In domestic environmental protection systems, the water supply system mainly requires the use of centerline butterfly valves, soft sealing gate valves, ball valves, and exhaust valves (used to remove air from pipelines). The sewage treatment system mainly requires soft sealing gate valves and butterfly valves.

長輸管線用閥門：長輸管線主要為原油、成品沒及天然管線。這類管線需用量居多的閥門是鍛鋼三體式全通徑球閥、抗硫平板閘閥，安全閥，止回閥，針型閥。

Valves for long-distance pipelines: long-distance pipelines mainly include crude oil, finished oil, and natural pipelines. The valves that require the majority of this type of pipeline are forged steel three body full bore ball valves, sulfur resistant flat gate valves, safety valves, check valves, and needle valves.

石化裝置用閥門： a,煉油裝置，煉油裝置需用的閥門大多是管道閥門，主要為閘閥、截止閥、止回閥、安全閥、球閥、蝶閥。 b,化纖裝置，化纖產品主要有滌綸、晴綸、維綸三大類。其需用的閥門的球閥、夾套閥(夾套球閥、夾套閘閥、夾套截止閥)。 c,丙烯晴裝置。該裝置一般需用api標準生產的閥門，主要為閘閥、截止閥、止回閥、球閥、疏水閥。 d,合成氨裝置。由于合成氨原和凈化方法不同，其工藝流程不同，所需閥門的技術性能也不同。目前，國內合成氨裝置主要需用閘閥、截止閥、止回閥、調節閥。 e,乙烯裝置，乙烯裝置是石油化工的龍頭裝置，其需用閘閥等。

Valves used in petrochemical plants: a. Most of the valves used in refining plants are pipeline valves, mainly gate valves, globe valves, check valves, safety valves, ball valves, and butterfly valves. b. Chemical fiber equipment, chemical fiber products mainly include three categories: polyester, acrylic, and vinylon. The ball valve and jacketed valve (jacketed ball valve, jacketed gate valve, and jacketed globe valve) required for the valve. c. Acrylonitrile unit. This device generally requires valves produced according to API standards, mainly including gate valves, globe valves, check valves, ball valves, and drain valves. d. Synthetic ammonia plant. Due to different synthetic ammonia raw materials and purification methods, the process flow and technical performance of the required valves are also different. At present, domestic synthetic ammonia plants mainly require gate valves, globe valves, check valves, and control valves. e. Ethylene plant is a leading device in petrochemical industry, which requires the use of gate valves, etc.

電站用閥門：我國電站的建設正向大型化方向發展，所以需用大口徑及高壓的安全閥、減壓閥、截止閥、閘閥、蝶閥、緊急切斷閥及流量控制閥。

Valves for power plants: The construction of power plants in China is developing towards large-scale development, so large-diameter and high-pressure safety valves, pressure reducing valves, globe valves, gate valves, butterfly valves, emergency shut-off valves, and flow control valves are needed.

冶金用閥門：冶金行業中氧化鋁行為主要需用耐磨料漿閥(在流式截止閥)、調節疏水閥。煉鋼行業主要需用金屬密封球閥、蝶閥及氧化球閥、截止閥和四通換向閥。

Metallurgical valves: In the metallurgical industry, wear-resistant slurry valves (in flow stop valves) and regulating drain valves are mainly required for aluminum oxide behavior. The steelmaking industry mainly requires metal sealed ball valves, butterfly valves, oxidation ball valves, globe valves, and four-way directional valves.

海洋平臺用閥門：隨著海上油田開采的發展，其海洋平臺需用關斷球閥、止回閥、多路閥等。

Valves for offshore platforms: With the development of offshore oil field exploitation, offshore platforms need to use shut-off ball valves, check valves, multi way valves, etc.