"SKS 143" Pressure reducing valve with brass diaphragm.
Body : Forged brass Seal : Stainless steel "0" Ring : NBR. Ends : Screwed BSP female. Max inlet range: 25 Kg. Max outlet range: 0.5 to 6 Kg. Max operating temperature: 80°C Sizes: 1" (25mm) to 4"(1OOmm).