Filter Regulator YT-200• General purpose • 1/4" • Aluminum • Non or self-relieving • -40 °C to +120 °C operating temperature (optional) YT-205• General purpose • 1/4" • 316 construction • Non or self-relieving • -40 °C to +120 °C operating temperature (optional) YT-220• General purpose • 1/2" • Aluminum • Non or self-relieving • -40 °C to +120 °C operating temperature (optional) YT-225• General purpose • 1/2" • 316 construction • Non or self-relieving • -40 °C to +120 °C operating temperature (option)