cast iron gate valves

cast iron gate valves   Product Description      It overcome phenomenon of general gate valve
bad seal,leakage and rust, against theft,antipry,water proof,dust proof,safety,confidential, will make valve locking at any open angle It can be wildly used in drinking water,polluted water,structure,petroleum,chemcial industry foods,medcine,light industry,electricity,shiping and metallurgy   Main Parts Material

ITEM	MATERIAL
Body	cast iron , ductile iron
valve	ductile iron covering outside with EPDM
bolt	zinc coat
gasket	NBR
bonnet	cast iron , ductile iron
stem	stainless steel
"O"seal ring	NBR
thrust plate	tine bronze
shatf sleeve	tine bronze
bolt	zinc coat
shaft cap	cast iron , ductile iron
dust cover	NBR
handwheel	cast iron
fixed nut	zinc coat

  Techinical parameter 

Normal diameter	DN80--DN1000
Normal working pressure	1.0/1.6/2.5 Mpa
Working temperautre	0-80°C
Seal pressure	1.1 times of working pressure
Body pressure resistance	1.5 times of working pressure
Applicable medium	water oil gas

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