Gas water heaters , volume i , storage water heaters with input ratings of 75 , 000 btu per hour or less same as csa 4 . 1 容量i额定输入每小时75 , 000btu或低于75 , 000btu的贮水式燃气热水器
9.
A . s . m . e rated * , csa listed . self - closing t & p relief valves for water heaters up to 100 , 000 btu / hr 2合1温度压力安全阀,对于温度过高,压力过大的紧急状态提供成本最低,最有效的保护方案。
10.
Csa 4 . 1b gas water heaters , volume i , storage water heaters with input ratings of 75 , 000 btu per hour or less same as csa 4 . 1b 燃气热水器.卷i .每小时输入额定值为75 , 000btu或更少的储水式加热器