Housings are of high strength aluminum die castings.
All models have been tested for multi-poise mounting and may be installed in any plane or angle without restriction. Other than a normal upright position will result in a slight difference of outlet pressure. They may be used with natural, manufactured, mixed, LP, or LP gas-air mixture. Different models have American Gas Association, German D.V.G.W., European EN-88, Canadian Gas Association, and Australian Gas Association certifications. To change settings from LP to natural gas simply unscrew the top cap and pull the plunger from it.