ZFV Bi-directional triple offset butterfly valve, is a new product designed in recent years as per the development needs of the using situation, no matter media come from which direction, bi-directional seal triple eccentric butterfly valve sealed butterfly valve can be sealed, comparing ordinary butterfly valve, which can only withstand uni direction of medium pressure, but when the media reverse flow, the butterfly valve will leak.
Products features :
* Size : DN1200
* Pressure : PN16
* Connection Type : Double Flanged Ends
* Pressure type: Bi-directional
* Operation : Pneumatic Actuator
* Actuator type :Single acting(spring return)
* Torque : 23960N.m
* Face to face length : 470mm
* Valve Structure : Triple Offset
* Seal Structure : SS laminated with Gr
* Application : Chemical,System Pharmaceutical,Power and Oil.
* Accessory: with rings
* Suitable Temperature : -29°C ~ 375°C
* Suitale Pressure : PN≤1.6Mpa
* Material :
Body:stainless steel A351-CF8,
Disc:stainless steel A351-CF8,
Seal:laminated SS316 + graphite.
* Standard : Design and manufacture BS EN 593
* Origin : WENZHOU City
Now time many manufacturers produce bi-directional seal butterfly valve by same contruct design as normal uni directional seal butterfly valve, only thicker the stem diameter and increase the seal ring thickness, although this construct can be sealed, but only limited to small diameter valve, with small flow in pipeline; when the valve diameter is larger than DN300 , the bi-directional sealing performance is not stable.
ZFVALVE bi-directional sealing flaoting seat triple eccentric butterfly valve, use floating replaceable valve seat design, no matter media come from which direction, the valve seat can be self-adjustment due to the existence of floating space, so as to achieve the purpose of good sealing.Now ZFV can produce valve PN6-25, DN80-1600, flange type, butt welding bi-direction sealed butterfly valve, positive and negative directional seal 1: 1 zero leakage.