一、进口液化天然气截止阀概述

进口液化天然气截止阀，也叫LNG截止阀，液化天然气低温截止阀，是指用于低温液体液化天然气的贮运设备的管理系统的截止阀，具有开关灵活、密封可靠的特点，也可用于其他低温和深冷介质的管理系统。

液化天然气(Liquefied Natural Gas，简称LNG)，主要成分是甲烷，被公认是地球上最干净的能源。无色、无味、无毒且无腐蚀性，其体积约为同量气态天然气体积的1/625，液化天然气的重量仅为同体积水的45%左右。其制造过程是先将气田生产的天然气净化处理，经一连串超低温液化后，利用液化天然气船运送。燃烧后对空气污染非常小，而且放出热量大。

美国威盾VTON主要产品有进口液化天然气截止阀，进口低温短袖截止阀，进口低温长袖截止阀，进口低温不锈钢截止阀，进口低温焊接截止阀，进口低温法兰截止阀，进口LNG低温截止阀，进口液氮截止阀，进口液氧截止阀，进口液化天然气截止阀，进口低温深冷截止阀等。主要用于乙烯，液化天然气装置，天然气LPG LNG储罐，接受基地及卫星站，空分设备，石油化工尾气分离设备，液氧、液氮、液氩、二氧化碳低温贮槽及槽车、变压吸附制氧等装置上。

Liquefied natural gas cut-off valve, also known as LNG cut-off valve, refers to the cut-off valve used in the management system of low-temperature liquid liquefied natural gas storage and transportation equipment. It has the characteristics of flexible opening and reliable sealing, and can also be used in the management system of other low-temperature and cryogenic media.

Liquefied Natural Gas (LNG), mainly composed of methane, is recognized as the cleanest energy source on Earth. Colorless, odorless, non-toxic, and non corrosive, its volume is about 1/625 of the same amount of gaseous natural gas, and the weight of liquefied natural gas is only about 45% of the same amount of accumulated water. The manufacturing process involves purifying the natural gas produced by the gas field, undergoing a series of ultra-low temperature liquefaction, and then using liquefied natural gas ships for transportation. After combustion, it causes very little air pollution and releases a large amount of heat.

VTON's main products include liquefied natural gas globe valves, low-temperature short sleeved globe valves, low-temperature long sleeved globe valves, low-temperature stainless steel globe valves, low-temperature welding globe valves, low-temperature flange globe valves, LNG low-temperature globe valves, liquid nitrogen globe valves, liquid oxygen globe valves, liquefied natural gas globe valves, low-temperature cryogenic globe valves, etc. Mainly used in ethylene, liquefied natural gas equipment, natural gas LPG LNG storage tanks, receiving bases and satellite stations, air separation equipment, petrochemical tail gas separation equipment, low-temperature storage tanks and tankers for liquid oxygen, liquid nitrogen, liquid argon, carbon dioxide, and pressure swing adsorption oxygen production equipment.

二、进口液化天然气截止阀参数