PP-R FEMALE THREADED UNION 1.Resistant to high temperatures, good impact strength. 2.High flow capacity: smooth interior walls result in lower pressure loss and higher volume than metal pipes. 3.Lower installation costs: light weight and ease of installation can reduce installation costs by as much as 50% over metal piping system. 4.Long life: more than 50 years under normal conditions. 5.Non-toxic:no heavy metal additives, would not be covered with dirt or contaminated by bacterium. 6.CorrosionResistant: resist chemical matters or electron chemical corrosion. 7.Recycled and Environment-frienfly. SpecificationS20*1/2''FS20*3/4''FS25*1/2''FS25*3/4''FS32*1/2''FS32*3/4''FS32*1''FS40*3/4''FS40*1''FS40*11/4''FS50*1''FS50*11/4''FS50*11/2''FS63*11/2''FS63*2''FS75*21/2''FS90*3''FS110*4''F