Q21Y高温硬密封球阀的球和阀座都是通过喷焊STL合金后进行配合研磨。可以耐高温到650℃，高压42MPa,可以通过颗粒状介质。它具有旋转90度的动作，旋塞体为球体，有圆形通孔或通道通过其轴线。球阀在管路中主要用来做切断、分配和改变介质的流动方向，它只需要用旋转90度的操作和很小的转动力矩就能关闭严密。球阀很适宜做开关、切断阀使用，但近来的发展已将球阀设计成使它具有节流和控制流量之用，如V型球阀。

   Q21Y高温硬密封球阀的主要特点是结构紧凑，密封稳定，结构简单，维修方便，密封面与球面常在闭合状态，不易被介质冲蚀，易于操作和维修，适用于水、溶剂、酸和天然气等一般工作介质，而且还适用于工作条件恶劣的介质，如氧气、过氧化氢、甲烷和乙烯等，在各行业得到广泛的应用。球阀阀体可以是整体的，也可以是组合式的。

       Q21Y高温硬密封球阀优点：

1．流体阻力小，全通径的球阀基本没有流阻。

2．结构简单、体积小、重量轻。耐高温 耐高压 方便安装执行机构。

3．紧密稳定。它有两个密封面，而且目前球阀的密封面材料广泛使用各种塑料，密封性好，能实现完全密封。在真空系统中也已广泛使用。

4．操作方便，开闭迅速，从全开到全关只要旋转90°，便于远距离的控制。

5．维修方便，球阀结构简单，密封圈一般都是活动的，拆卸更换都比较方便。

6．在全开或全闭时，球体和阀座的密封面与介质隔离，介质通过时，不会引起阀门密封面的侵蚀。

7．适用范围广，通径从小到几毫米，大到几米，从高真空至高压力都可应用。

8．由于球阀在启闭过程中有擦拭性，所以可用于带悬浮固体颗粒的介质中。

高温硬密封球阀

高温硬密封球阀是一种适用于高温工况，采用金属对金属密封方式的阀门，广泛应用于石油、化工等行业。以下是其产品概述 ：

高温硬密封球阀- 结构组成：主要由阀体、球体、阀座、阀杆和执行机构等部件组成。阀体通常用铸钢等耐高温材料制成，内部设流道。球体是启闭件，由硬质合金制成。阀座与球体紧密配合形成密封面，多采用不锈钢等材料。阀杆连接球体和执行机构，传递驱动力。执行机构可选择手动、电动、气动等多种类型 。

高温硬密封球阀- 工作原理：关闭时，执行机构驱动阀杆带动球体旋转至与阀座通道垂直，球体与阀座的金属密封面贴合密封。开启时，阀杆反向旋转，球体转至与阀座通道平行，介质可通过 。

高温硬密封球阀- 特点优势：具有耐高温高压的特性，能承受高温介质冲刷和磨损。密封性能稳定，金属密封面硬度高、耐磨性好。操作简便，只需旋转球体即可控制介质通断，且操作力矩小。适用范围广，可用于含固体颗粒等多种苛刻工况，广泛应用于石油、化工等工业领域 。

高温硬密封球阀- 技术参数：公称通径通常有DN15-DN100等多种规格，球体和阀座表面经硬化处理后硬度可达HRC60以上，部分高温工况下耐温可超500℃ 。

High - temperature hard - seal ball valve is a kind of valve suitable for high - temperature working conditions, which adopts the metal - to - metal sealing mode is widely used in petroleum, chemical industry other industries. The product overview is as follows:

 High - temperature hard - seal ball- Structural composition: It is mainly composed of valve body, ball, valve seat, valve stem actuator other components. The valve body is usually made of high - temperature resistant materials such as cast steel, with a flow channel inside. The ball is the opening closing part, made of hard alloy. The valve seat closely cooperates with the ball to form a sealing surface, stainless steel other materials are mostly used. The valve stem connects the ball the actuator to transmit the driving force. The actuator can be of various types, such as manual, electric, pneumatic, etc.

High - temperature hard - seal ball- Working principle: When closing, the actuator drives the valve stem to drive the ball to rotate until it is perpendicular to the valve seat channel, the metal sealing surfaces of the ball the valve seat fit tightly for sealing. When opening, the valve stem rotates in the opposite direction, the ball rotates until it is parallel to the valve seat channel, the medium can pass through.

High - temperature hard - seal ball- Features advantages: It has the characteristics of high - temperature high - pressure resistance, can withstand the scouring wear of high - temperature media. The sealing performance is reliable, the metal sealing surface has high hardness good wear - resistance. It is easy to operate. Only by rotating the ball can the on - off of the medium be controlled, the operating torque is small. It has a wide range of applications, can be used in various harsh working conditions, such as those containing solid particles. It is widely used in petroleum, chemical industry other industrial fields.

High - temperature hard - seal ball- Technical parameters: The nominal diameter usually has a variety of specifications, such as DN15 - DN100. After the surface of the ball the valve seat is hardened, the hardness can reach above HRC60, it can resist temperatures of over 500℃ in some high - temperature working conditions.