Description & Features

The bidirectional butterfly valve is specially designed for district heating and district cooling applications. The fully metal seated butterfly valve is widely used to meet the demand of on-off and regulating in thermal power plant, the heat exchange station, regional boiler room, the hot water pipe network.

● The hard seal butterfly valve with three eccentric hard seal structure, the valve seat and disc almost no wear, with the more the more tight sealing function.

● The ring made of stainless steel, with the advantages of both metal seal and flexible seal, both in the case of low temperature and high temperature, have excellent sealing performance, with corrosion resistance, long service life and so on.

● The butterfly plate sealing surface using welding cobalt-based hard alloy, sealing surface wear-resistant, long service life.

● Large-format butterfly plate frame structure, high strength, large flow area, small flow resistance.

● According to user needs, the valve supply network of hard-sealing butterfly valve can be designed to have a two-way sealing function, the installation of media flow from the restrictions, but also the impact of space location, can be installed in any direction.

● The drive can be multi-station (rotated 90 ° or 180 °) installation, user-friendly.

Specifications

Size Range	Body Material
2"-80" DN50-DN2000	WCB, CF8, CF8M, CF3, CF3M etc.
Pressure Rating	Disc Material
Class150-Class300 PN10-PN40	WCB, CF8, CF8M, CF3, CF3M etc.
End Connection	Seat Material
Flange (FF, RF, RJ), Butt Welding	D507Mo, SS304, SS316, Stellite Overlay
Structure Style	Stem Material
Full Port, Triple Offset	17-4PH, SS410, SS304, SS316
Actuator Options	Design Standard
Handwheel, Bevel Gear, Pneumatic, Electric	API 609, EN 593, JB /T 8527, JIS B2071
Temperature Range	Face to Face Standard
-50℃~650℃	API 609, EN 558-1, GB/T 12221, JIS B2002
Connection Standard	Test Standard
Flange Drilling: ASME B16.5, ASME B16.47, EN 1092-1 Butt Weld: ASME B16.25, GB/T 12224	API598, EN 12266-1, GB/T 13927, JIS B2003 GOST 54432, JIS B2220

Brand	DAGO or OEM
Test	100% quantity tested before delivery
Guarantee	12 months from date of shipment or Negotiable
MOQ	1 Set
Sample	Available
Color	Customer required or manufacturer default
Packing	Plastic bag wrapped inside, seaworthy wooden case outside
Certificate	API6D, CE, TUV, ISO9001, ISO14001, ISO45001, Mill Test Certificate
Country of Origin	Zhejiang, China
HS Code	848180 (universal), 8481804090 (China)
Port	Shanghai or Ningbo
Payment Terms	T/T, L/C, Western Union

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Bi-Directional Butterfly Valve