I. Overview 

 W100D water valve is determined by the main valve, pilot valve float, float and so on. This valve and float control, pump control valve is automatically closed down; reduce the water level and restart the pump automatically open the valve, stopping the pump effectively prevent the generation of water hammer, pipe production to avoid excessive pressure. For industrial and mining enterprises, high-rise building water tanks, pools, automatic air tower water systems. This valve, float and prompt action, level control with high accuracy, flexible and durable, the water level is not close watertight closure pressure and interference. The main valve part material as follows: 
 Part Name Material 
 Body, bonnet cast iron, cast steel, stainless steel 
 Bronze seat, stainless steel 
 Valve carbon steel, stainless steel + nitrile rubber 
 Stem aluminum bronze, chrome stainless steel 
 Nitrile rubber diaphragm 
 Diaphragm plate carbon steel, stainless steel 
 Stainless steel spring 



 Second, the main technical parameters: 
 1.0MPa 1.6MPa 2.5MPa Nominal Pressure 
 Shell test pressure 1.5MPa 2.4MPa 3.75MPa 
 Sealing test pressure 1.1MPa 1.76MPa 2.75MPa 
 Applicable temperature ≤ 80 ℃ 
 Minimum operating pressure P1 ≥ 0.07MPa 
 For medium water 


 Three main dimensions: 
 Nominal diameter size (mm) 
 DN (mm) L A1 A H1 HF 
 20 150 130,325,179,212,116 
 25 160 130,325,179,212,116 
 32 180 130,325,179,212,116 
 40 200 140,335,210,265,168 
 50 203 140,335,210,265,168 
 65 215 140,335,215,310,180 
 80 241 145,345,245,350,210 
 100 270 155,365,305,460,284 
 125,300