ISO Sub Base Valve ISO Sub Base Valve – SIZE 1Series DS4➝ Mounting interface suitable for ISO 5599-1➝ Manual override➝ Wide range of coil voltages➝ Optional – High temperature 150° C max. (Viton seals) ISO Sub Base Valve – SIZE 3 ISO SUB BASE VALVE – SIZE 3➝ Mounting interface suitable for ISO 5599-1➝ Manual override➝ Wide range of coil voltages ISO Sub Base Valve – SIZE 3 – Solenoid Pilot OperatedISO SUB BASE VALVE – SIZE 3➝ Mounting interface suitable for ISO 5599-1➝ Manual operator – Push type➝ Wide range of coil voltages