1.suitable for small and medium hot water, steaming hot furnace type 2.adapt the rotary flange,easy to install.. Delivery ... 1.suitable for small and medium hot water, steaming hot furnace type 2.adapt the rotary flange,easy to installLB fuel ... description: Suitable for small and medium hot water, steaming hot furnace type, adapting the rotary flange, convenient to installation, maintenance, belongs ...