The mixing valve with filter provides below deck water tempering. The valve is furnished complete with integral filter, two back checks, and 3/8 in compression fitting inlets and outlets. Zurn Lead free products (-XL), is the line of durable, high quality brass faucets and fixtures that are designed and manufactured to comply with state laws and local codes that mandate lead content levels. Zurn Lead free products (-XL) are manufactured with less than one quarter of one percent (0.25 percent) total lead content by weighted average.