... : for drink water using. Size:24*2.3 20*2.3 32*3.0 50*4.6 63*5.8 ... 2.3 , 32*3.0 , 40*3.7 , 50*4.6 , 63*5.8 .2---S4 PN1.6 Mpa : 20*2.3 , 25*2.8 , 32*3 ... .6 , 40*4.5 , 50*5.6 , 63*7.1 .3---S3.2 PN2.0Mpa: 20*2.8 , 25*3 ... 8.7.4---S2.5 PN2.5Mpa: 20*3.4 , 25*4.2 , 32*5.4 , 40*6.7 ... and sanitary , no worry .2. The highest temperaturer could reach 95degree.3. Generally , use life more than ...