● 阀体结构有三种：铸造，焊接和锻造。
● 阀门采用带O-形圈密封和施加预紧力的浮动阀座的结构，使平板闸阀进出口双向密封。
● 该结构的启闭力矩仅为普通阀门的1/2，所以可以轻松打开和关闭阀门。
● 阀门的阀座采用软密封圈，具有软密封面对金属和金属对金属的双重密封,软密封面同时擦拭闸板脏物的作用。
● 阀门的一侧带有注脂阀，油脂通过注脂器、阀座注脂孔进入密封面从而达到紧急密封的作用。
● 为延长使用寿命，闸板带有导流孔，可以保护密封面不受介质侵蚀，并且无论是阀门全开或是全关始终与密封面契合。
● 当阀门全开状态时，阀门通道平滑为直线，流阻系数极小，几乎无压力损失，可以通过清管器清扫管线。
● 本阀门采用带自密封能力的填料结构，不需要经常调节，开、关极为轻便。
● 密封性可靠，填料处设有辅助密封油脂注入结构，解决了通用阀门填料处最容易外漏的弊病。
● 阀门关闭时能自动卸掉内腔高压，保证使用安全。
● 产品为全封闭结构，防护性能好，可适用于全天候使用条件。
● 阀门带有位置指示器，以显示阀启闭位置。
● 上装式可在维修时节省时间和费用。
◎ 主体材质：碳钢、不锈钢、合金钢
◎ 公称通径：NPS 2"~60"、 DN 50~1500
◎ 压力范围：Class 150~2500、PN 100~420
◎ 工作温度：-60°C~ +538°C
◎ 驱动方式：手动、电动等
◎ 应用范围：自来水、污水、建筑、石油、化工、食品、医药、轻纺、电力、船舶、冶金、能源系统等
◎ Design Standard: ASME B16.34, GB/T 12234
◎ Pressure Temperature Rate: ASME B16.34, GB/T 12224
◎ Face to Face: ASME B16.10, GB/T 12221, EN558
◎ Flange Standard: ASME B16.5, ASME B16.47, GB/T 9113, JB/T 79, HG/T 20592, EN 1092, GOST 33259
◎ Butt Weld: ASME B16.25, GB/T 12224
◎ Pressure Test: API 598, API 6D, GB/T 13927, JB/T 9092, GOST 9544
RAYS bellows sealed globe valve adopts international advanced technology and double sealing design. It has the characteristics of high-performance elastic metal bellows and extremely long expansion fatigue life. Pipe shut-off valves: improve the use of energy efficiency, increase the safety of production equipment, reduce maintenance costs & frequent maintenance, and also provide a clean & safe work environment. Bellows sealed globe valve are suitable for class 150~2500, working temperature -46°C~538°C pipeline. Using carbon steel, stainless steel and other different main materials can be suitable for various media. The optional drive devices are: hand wheel, electric, pneumatic, etc. Bellows sealed globe valves are suitable for pipelines under various working conditions in petroleum, chemical, pharmaceutical, fertilizer, electric power, and other industries.
The quality of forged steel parts is higher than that of cast steel parts, and they can withstand large impact forces. Their plasticity, toughness, and other mechanical properties are higher than those of cast steel parts. The diameter of forged steel stop valves is generally not more than DN80, and most of them are reduced-diameter designs. Compared with cast steel stop valves of the same diameter, the flow rate is slightly lower, but the pressure and temperature range they can withstand are higher than those of cast steel valves, and their sealing performance is much better than that of cast steel stop valves, and their service life is longer. Like other stop valves, they are subject to the restrictions of the flow direction of the medium. Forged steel stop valves can be divided into straight-through stop valves (type stop valves) and direct-flow stop valves (Y-type stop valves) according to installation positions.
双瓣式止回阀具有两个半圆形，弹簧加载阀瓣安装在中央垂直枢轴上。当阀门打开时，流体和弹簧的力作用于阀瓣的中心，使其首先从底座打开。这种设计最大限度地减少了密封在开启过程中的磨损，提高了其耐用性。当流量减少时，由于弹簧的力量，阀瓣缓慢地向阀座移动，确保逐渐关闭。在回流过程中，阀瓣上的作用力增加，关闭速度更快，有效降低了水锤和液压冲击的风险。弹簧的力量首先关闭阀瓣的顶端，防止阀瓣底部的损坏，延长密封的使用寿命。