Product Description
This has EPDM 'O' rings which makes the valve suitable for use with water and some dilute chemicals. The valve inlet is in the bottom (the male thread) and you set the pressure that you want to the valve to open at via the grey big nut on the top and a pressure gauge, once you have adjusted to the correct opening pressure, move the smaller "Lock Nut" to lock the large grey adjustment nut, that's it. To download the spec sheet and drawing - click here.