性能优势performance advangate

1. 阀体采用精密铸造工艺，先进的工艺了确保阀体无砂眼，表现光滑，质量更可靠。

the valve body adopts investment casting technology.

advanced technology to ensure that the valve body has no sand holes, surface more smooth  and quality more reliable.

2. 上密封结构，当阀门全开时，上密封结构将起到额外的密封作用，具有行程定位和抗振功能。

back seat structure. in the fully open position, back seat will form a extra sealing, with stroke locate and anti-vibration function.

3. 堆焊阀座，即使在恶劣工况下，也能确保可靠的密封。

overlay welded seat can keep reliable sealing under severe conditions.

4. 人体工程学设计手轮，使用寿命更长，操作轻松便捷且安全可靠。

ergonomic hand wheel. it provide longer service life and easier

operation.

技术规范technical specification

设计标准design standard: din en 13709:2003

结构长度face to face dimension: din en 558-1:1995

连接法兰flanged ends: din en 1092-1:2002

对焊连接welded ends: din en 12627

试验与检验test & inspection: din en 12266:2003

应用application

热油系统、蒸汽系统、冷热水系统等等

thermal oil system, steam system, hot and cold water system etc.