MOD1/1X073-003#产品新闻

Vickers威格士EHHAMP702J20
Vickers威格士EHHAMP702K20
Vickers威格士EHHAMP712D20
Vickers威格士EHHAMP712G20
Vickers威格士EEAPAM513A32
Vickers威格士EEAPAM525A32
Vickers威格士EEAPAM581A32
Vickers威格士EEAPAM511B32
Vickers威格士EEAPAM513B32
Vickers威格士EEAPAM523B32
Vickers威格士EEAPAM525B32
Vickers威格士EEAPAM533B32
Vickers威格士EEAPAM535B32
Vickers威格士EEAPAM561B32
Vickers威格士EEAPAM568B32
Vickers威格士EEAPAM571B32
Vickers威格士EEAPAM581B32
Vickers威格士EEAPAM523C32
Vickers威格士EEAPAM525C32
Vickers威格士EEAPAM533C32
Vickers威格士EEAPAM535C32
Vickers威格士EEAPAM561C32
Vickers威格士EEAPAM568C32
Vickers威格士EEAPAM581C32
Vickers威格士EEAPAM511D32
Vickers威格士EEAPAM513D32
Vickers威格士EEAPAM523D32
Vickers威格士EEAPAM525D32
Vickers威格士EEAPAM533D32
Vickers威格士EEAPAM535D32
Vickers威格士EEAPAM541D32
Vickers威格士EEAPAM553D32
Vickers威格士EEAPAM561D32
Vickers威格士EEAPAM568D32
Vickers威格士EEAPAM571D32
Vickers威格士EEAPAM581D32
Vickers威格士EEAPAM523E32
Vickers威格士EEAPAM533E32为什么切断阀应尽量选用硬密封？切断阀门要求泄漏越低越好，软密封阀的泄漏是低的，切断效果当然好，但不耐磨、可靠性差。从泄漏量又小、密封又可靠的双重标准来看，软密封切断就不如硬密封切断好。如全功能超轻型调节阀，密封而堆有耐磨合金保护，可靠性高，泄漏率达1-7，已经能够满足切断阀的要求。为什么双密封阀不能当作切断阀使用？双座阀门阀芯的优点是力平衡结构，允许压差大，而它突出的缺点是两个密封面不能同时良好接触，造成泄漏大。