... structure, light weight, acute movement, small pressure drop, large allowable differential pressure, large valve capacity, precise flow characteristic and ... , jacket insulated type, etc. Product nominal pressure (PN): 1.6, 4.0, 6.4 (MPA) Valve body caliber: 20- ... with a small axial unbalanced force, large allowable differential pressure and excellent stability. With good interchangeability, the sleeve ...