Construction : Spring Loaded Angle pattern, Bolted Bonnet Body Materials : Cast Iron/Cast Steel Trims : Bronze / Stainless Steel End Connection : Flanged IS/BS/ASA Manufacturing Standard :Maker's Standard Pressure Class :PN : 1.0 & 1.6 Blow-Off-Pressure : 0 to 150 Psi upo 200 mm sizes o to 100 Psi above 200 mm sizes Sizes : 15 mm to 300 mm