Robertshaw's 2-stage 24 volt combination gas valves, standing pilot as well as intermittent pilot models, feature: reliability, performance, flexibility, and easy installation all in one compact control. These valves feature a manual valve (gas cock), inlet/outlet screens, pilot gas filter, and pilot adjustment key. Models that have a safety magnet have a "notched or slotted" magnet for applications requiring the use of an ECO (Energy Cut-Off) switch. Models with the automatic pilot safety magnet provide gas shut-off in case of pilot outage. VALVES CAN BE MOUNTED IN ANY POSITION EXCEPT UPSIDE DOWN.