Double Disc Non Slam Micro Pressure Drop Buffer Slow Shut Butterfly Clapper Non Return Check Valve (HH46X/H)

MODEL: HDH46 / HYH46 Micro Resistance Slow shut Butterfly type Check Valve Δ This valve is outstanding for its structure, reasonable design, small profile, light weightness, good sealing performance, strong recycling capability, small flow resistance. it can slowly shut with no slamming, no vibration and no noise.The closing speed can be adjusted according to the specific condition at your site in order to eliminate pressure surge at the best closing speed.This model is popularly used in water supply and drainage pipeline of high-rise building and fire protection system. It is mounted at the outlet of pump to cut off backflow, preventing destructive pressure surge and securing the operation of the pipeline and pump. It is very energy-saving.  Medium applicableWater, Source water etc.Main materialCast Iron, Ductile Iron, Carbon Steel, Alloy Steel etc.Temperature applicable≤80ºCNominal Pressure150lb--900lbNominal Diameter2"--48"Flange DimensionANSI B16.42BS4504, ISO2531, ISO7005 etc. Face to Face LengthBS5155, ISO5752, DIN3352 etc.  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1