tank bottom flush valve

Tank bottom flush valve, Upper type or Lower type, Stainless steel,
with Cylinder/ Double Acting or Single Acting,
with Accessory : Solenoid valve, Limit switch, Air set, etc.,
Seat : metal to metal, Teflon seat, etc.
On operating Test by Automatic controll box
http://blog.cyworld.com/kt2004
http://cyworld.com/jet2004
sales@steeltiger.co.kr, steel :(쇠)금, tiger :(호랑이)호