Gland Seal Globe Valve Pressure Seal - ASME | Valvosider Valvosider Globe Valve Pressure Seal - ASME | Valvosider The Globe Valve Pressure Seal by Valvosider is designed according to ASME standards and is available in various pressure classes and sizes. The valve is offered in Class 600 and 900, with sizes ranging from 2" to 16", and in Class 1500 and 2500, with sizes from 2" to 12". Each class corresponds to a specific figure number: P62 for Class 600, P63 for Class... View