Basic valve plus 53mm x 1/2 inch male threaded nipple, back nut and washer. Acid corrosion and lime resistant. Pressure ratings: HP maximum 2000kPa, delivery at 1000kPa = 800 l/h. LP maximum 1000kPa, delivery at600kPa = 1200 l/h. XLP maximum 300kPa, delivery at 150kPa = 1800 l/h.