止回閥
Check valve
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。用于管路系統，其主要作用是防止介質倒流、防止泵及其驅動電機機反轉，以及容器內介質的泄放。根據材質的不同，可以適用于各種介質的管路上。 的工作特點是載荷變化大，啟閉頻率小，一投入關閉或開啟狀態，適用周期便很長，且不要求運動部件運動。但一旦又“切換"要求，則必須動之靈活，這一要求較常見的機械運動更為苛刻。
產品型號：H41W-16P
連接方式：法蘭 4
結構形式：升降直通式 1
密封面或襯里材料：密封面為閥體材料 W
閥體材料：不銹鋼（304） P
體系標準：國標
Check valve, also named reflux valve, cut off valve, back pressure valve, one-way valve, is automatic valve because the kind valve depends on flowing of pipeline media bringing force to automatic opening and close. Check valve is used in pipe system, the main role is to prevent media backing up, prevent pump and driving motors reversing, and container medium discharge. According to material, check valve can be installed in kinds of pipeline. Working characteristic is that changeable load , low frequency of opening and close. Long period usage and it doesn’t need moving parts move once it’s opened and closed. Once there is “switch" requirement, it must be flexible and dynamic, and this requirement is harsher on common mechanical movement.
Model:H41W-16P
Connection: flange 4
Structure: Lift straight-through 1
Sealing surface or liner material: sealing surface is body material W
Body material: stainless steel （304） P
System standard: GB
