Stainless steel forging manifold ,high strength and wear-resistance. Symmetrical inlet and outlet,convenient for left to right mounting pressure regulation/safety valve. Die-casting crankcase,anodized. Heat treatment and precision grinding crankshaft. German PARKER,U type full set moving seal assembly. Strengthened valve housing and stainless valve slice check valve. Integrated aluminum die-casting connecting rod. Material of pump head can be cutomized: Casting iron, ss304,ss316,ssd2205.ect The details of parameters, pls contact with me !!!!!!