Product Name: Automatic Oblique Safety Quick Pressure Relief Valve (430X) Model NO.: 430X Material: Ci, Di, CS, Ss etc Structure: Diaphragm/ Piston Valve Seat: Single-Seat Connection: Flange Temperature: Ordinary Temperature Certification: ISO, CE Medium Applicable: Water, Oil etc Trademark: KARFAR Transport Package: Bubble Plastic Paper + Plywood Case Specification: DN50 ~ DN800 Origin: China Product Description NEW 400X SERIES Diaphragm actuated type Hydraulic Control ValveQuick Safety Pressure Relief ValveMODEL NO. 430X This valve functions to release excessive pressure when the system pressure is higher than the preset data by the pilot valve. It keeps the pipeline pressure under safe level and safeguides the pipeline equipment from damage of high pressure and burst pressure. It has self-reset function.Body &BonnetCast iron, Ductile iron, Cast steel, Stainless steel etcStemStainless steelDiscBrass, Carbon steel, Ductile iron etcSeatBrass, Stainless steel, Carbon steel etcSealingNBR, EPDM etcDiaphragmNBR, EPDM etcFlange DimensionANSI B16.42, BS4504, ISO2531, ISO7005 etc.Face to Face LengthANSI B16.10, BS5155, ISO5752, DIN3352 etc.Size: DN50 ~ DN800Pressure rating: PN10 (adjusting range 0.1 ~ 0.8Mpa) PN16 (adjusting range 0.2 ~ 1.4Mpa) PN25(adjusting range 0.3 ~ 2.0Mpa) We can do higher rating according to customer request.