Features: 1) Sizes: 15mm - 250mm 2) Seal: brass / cast iron / stainless steel 3) Body: cast iron 4) Standards: JB, JB/T, DIN 5) Type: two-way cast iron rise fall check valve 6) Pressure: 1.6MPa (16kg) 7) Connection type: flange end 8) Control method: automatic 9) Advantages: good appearance, long service life and flexible switch