Comparison Table about JINERJIAN butterfly valve DN100 with butterfly valve on the market
	DN100 4" market		DN100 4" Jinerjian butterfly valve
item	material		material and features
product	handle butterfly valve weight 3.14kg, worm one weight 5.44kg. Cold spray, only used indoor		handle butterfly valve weight 5.26kg, worm one weight 7.34kg Unique appearance, meets GB, ANSI, JIS standard, spraying under 2 times high temperature, never fade.                     24 months guarantee
body	cast iron, weight 1.56kg, hollow, rudeness, can' t ensure concentricity		cast iron, 3.14kg, be processed under CNC lathe. Solid, drilled by machine, ensure the concentricity, reduce friction effectively.                             can supply ductile iron, cast steel, stainless steel 304, 316, 316L etc
seat	renovated rubber, includes 5% natural rubber, hard, low flexibility, easy leakage after several times		EPDM seat, includes 50% natural rubber, -20-120℃, long service life, test results show rubber has no influence after open and shut 6000 times.   can supper NBR, PTFE, CSM, Viton, silicone rubber and CR
disc	weight 0.46kg, hollow, withstand 10bar pressure		0.56kg, solid, working pressure is 30 bar.                                                                                     can supply ductile iron, cast steel, stainless steel 304, 316, 316L etc
stem	0.28kg, length 275mm, diameter 12mm, black iron stem, easy to rust		0.44kg, 290mm, diameter 16mm, made from galvanized cold drawn steel, smooth and anti-rust, reduce friction effectively
bushing	only use 1 rubber O-ring		yellow bushing, made from waterproof and wear resistant material after 16 processes, each valve has 4 bushings+1 O-ring, 5 steps reach zero leakage
bolt+nut	2 sets 6*20 galvanized bolts and nuts		10*30  2 sets color bolts with two pairs gaskets to prevent loosen when pipe shock
handle	length 230mm, weight 0.32kg		length 260mm, scientific design, labour saving , weight 0.36kg                                                  can supply pressed chromium handle, aluminum handle etc
dick	1.2mm thickness		2mm thickness can supply pressed chromium plating disc and aluminum disc
gearbox	weight 1.7kg, cover with paint		weight 2.04kg, spraying frosting
test pressure	spot check, 10 bar test pressure		every butterfly valve has to tested on both sides before delivery, test pressure can reach 20 bar, national standard only request 17.6 bar