進口升降式止回閥(德國奧萊斯OLES閥門)
【進口升降式止回閥】詳細說明:
升降式止回閥選用于公稱壓力PN1.6~6.4MPa,工作溫度-29~550℃的石油、化工、火力電站等各種工況的管路上。適用介質為:水、油品、蒸汽等。
止回閥又稱為逆流閥、逆止閥、背壓閥、單向閥。這類閥門是靠管路中介質本身的流動產生的力而自動開啟和關閉的,屬于一種自動閥門。止回閥用于管路系統(tǒng),其主要作用是防止介質倒流、防止泵及其驅動電機反轉,以及容器內介質的泄放。止回閥還可用于給其中的壓力可能升至超過主系統(tǒng)壓力的輔助系統(tǒng)提供補給的管路上。
Lifting check valves are used in pipelines with nominal pressure PN1.6-6.4 MPa and working temperature - 29-550 C in petroleum, chemical and thermal power stations. Applicable medium: water, oil, steam, etc.
Check valves are also known as countercurrent valves, check valves, back pressure valves, one-way valves. This kind of valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, and belongs to an automatic valve. Check valves are used in pipeline systems. Their main functions are to prevent medium backflow, reverse pumps and their driving motors, and release of medium in containers. Check valves can also be used in pipelines to supply auxiliary systems where the pressure may rise to more than the pressure of the main system.
【進口升降式止回閥】結構特點:
1選材考究,材料的全面質量高。
2密封副配對*合理,閥瓣、閥座密封面采用鐵基合金或司太立(Stellite)鈷基硬質合金堆焊面成,耐磨、耐高溫、耐腐蝕、抗擦傷性能好,使用壽命長。
3可采用各種配管法蘭標準及法蘭密封型式,滿足各種工程需要及用戶要求。
4閥體材料品種齊全,墊片可根據(jù)實際工況或用戶要求合理選配,能適用于各種壓力、溫度及介質工況。
可按用戶要求設計制造不同結構形式和連接形式的止回閥,為各種設備配套使用。
【進口升降式止回閥】特點:
1、體積小,重量輕,結構緊湊、維修方便
2、閥板采用對偶式,在彈簧的彈性力下矩下可自行速閉
3、因速閉作用,可防止介質倒流
4、閥體結構長度尺寸小,剛性好
5、安全方便,可用于水平垂直兩個方向安裝