Product : Forged Steel Piston Valve Screwed End Body Material : ASTM A 105 Pressure Rating : Class 800 Product Description : Bolted Bonnet O.S. Yoke Type Rising Stem Type of Piston : AISI-420 End Details : Screwed End NPT Threads Testing & Certification Body Test Pressure : 207barg (Hyd.) Seat Test Pressure : 152barg (Hyd.) (APS Marines & Logistics)