Features: 1) Sizes: 15mm - 250mm2) Seal: brass / cast iron / stainless steel3) Body: cast iron4) Standards: JB, JB/T, DIN5) Type: two-way cast iron rise fall check valve6) Pressure: 1.6MPa (16kg)7) Connection type: flange end8) Control method: automatic9) Advantages: good appearance, long service life and flexible switch