Size Range: DN50-DN1500
Pressure: PN6~PN63 Class150~Class1500 JIS5K/10K/20K
Body Materials: Cast Iron, Ductile iron, Bronze, Carbon steel, Stainless steel, Cr-Mo steel, Alloy steel
Seat Materials: EPDM, NBR, PTFE, VITON, Rubber, STL, Bronze, Stainless steel, Cr-Mo steel, Alloy steel
Disc Materials: Ductile iron, Carbon steel, Bronze, Stainless steel, Cr-Mo steel, Alloy steel
Stem/Shaft Materials: 45#, 410, 420, 431, 2Cr13, Stainless steel, Cr-Mo steel
Packing: Flexible Graphite
Payment: T/T, D/P or L/C
Lead Time: 5-30 days
High performance butterfly valve
The ZG high-performance butterfly valve adopts a double eccentric butterfly plate with a spherical sealing surface, and is equipped with a single piece of flexible lip type sealing seat, which is suitable for occasions that require reliable sealing and good adjustment characteristics. Due to the design of double eccentric butterfly plate, the valve has tight sealing performance and long service life. It can be used to quickly cut off or adjust the flow.
The product is suitable for the transportation of liquid and gas (including steam) in various industrial pipelines. Specially selected, it can also be used for special media, such as chlorine, oxygen, high vacuum, long life, sulfur resistance or corrosive media. The product can also have fire protection function selection, low temperature selection and micro-leakage suppression filler selection, etc.
The connection method can be a wafer type or a lug type single flange design for large pipe diameters and pipeline ends.
In addition to ASME B16.5, B16.47 standards, it can also be used in connection sizes such as DIN standards, JIS standards and national standards according to user requirements.
Use a single PTFE valve seat design, with good elasticity and high reliability
·Lip type sealing structure can compensate temperature and pressure changes
·No need to add O-rings or metal parts to keep the seal
·Achieve no air bubble leakage and sealing test in both directions
·Long service life and low maintenance
Special material sealed valve seat
·Specially designed sealing valve seat material, long life, good performance and wide range of use
Offset shaft and eccentric butterfly plate design
·The valve seat does not contact the butterfly plate when it is open and in the middle position
·No wear points on the upper and lower parts of the valve seat
·Low torque and small operating mechanism requirements
Reliable fixing of the shaft
·2"-24" (DN50-600) high-performance butterfly valve, the top of the shaft is equipped with a fixed ring to prevent the upper part of the shaft from moving out of the gland when the shaft is accidentally broken
Easy maintenance of valve seat
·The valve seat can be replaced as long as the insert is removed, without disassembling the butterfly plate and shaft shut-off and control.
·Has excellent control characteristics
·Percentage change such as flow characteristic curve
·Wide adjustment range
·Tightly sealed even if used for control
·The standard single flange butterfly valve with lugs can be used at the end of the pipeline at either end of the entire pressure and temperature range
·The drive device and accessories of the high-performance butterfly valve can be installed and provided uniformly
·Electric device, worm gear device, double-acting pneumatic device or spring reset pneumatic device can be provided as a complete set, as well as various accessories, including limit devices, solenoid valves and positioners
Provide a variety of materials
·Standard materials include ductile iron, aluminum bronze, carbon steel, stainless steel, 20 alloy, Monel, etc. Other materials can also be selected according to user requirements.
Field of Application：
Size Range: 2"-60"/DN50-DN1500
Temperature: （-）10℃ to (+) 450℃
Allowable Operating Pressure: ANSI Class150~Class300 DIN PN6~PN25
ZG high-performance butterfly valve uses offset valve stem and eccentric butterfly plate, adopts ball valve lip type sealing technology, and uses a single polymer sealing seat to coincide with the outer edge of the spherical sector of the butterfly plate to achieve a reliable seal. This structure eliminates abrasion and reduces the influence of temperature and pressure changes. This kind of valve has compact structure, light weight and reliable sealing. Compared with the traditional gate valve, it is easy to install, reliable in sealing, convenient to maintain, longer service life, lighter in weight and low in price. It is used in industries such as petroleum, natural gas, chemical industry, and electric power.
The structure length of ZG high-performance butterfly valve conforms to API609.
In order to facilitate operation or automatic control or remote control, the company's valves can be equipped with pneumatic devices and electric devices.
|Shell Test||3.0 Mpa||7.5 Mpa||15.0 Mpa|
|Seal Test||2.2 Mpa||5.5 Mpa||11.0 Mpa|
|Back Seal Test||2.2 Mpa||5.5 Mpa||11.0 Mpa|
|Working Temperature||-10℃ ~ 450℃|
Special materials are selected, and it can also be used in special environments, such as chlorine, oxygen, high vacuum, sulfur resistance or corrosive media.
1.Top Flanges drilled conforms to ISO5211.
2.Flanges drilled conforms to ANSI B16.5.
|DN||Inch||S||Class 150||Class 300|