D343W American standard flange butterfly valveDetailed product description：

Characteristics of D343W American standard flange butterfly valve
1. This valve adopts a three eccentric sealing structure, with almost no wear on the valve seat and butterfly plate, and has a sealing function that becomes tighter as it is closed.
2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing. It has excellent sealing performance in both low and high temperatures, corrosion resistance, and long service life.
3. The sealing surface of the butterfly plate is made of welded cobalt based hard alloy, which is wear-resistant and has a long service life
4. The large-sized butterfly plate adopts a frame structure with high strength, large overcurrent area, and low flow resistance.
5. This valve has bidirectional sealing function, which is not limited by the flow direction of the medium or the spatial position during installation, and can be installed in any direction
6. The drive device can be installed in multiple stations (rotated 90 ° or 180 °) for easy user use.

D343W American standard flange butterfly valve (150Lb)

Nominal diameter DN		Size
		L	D	D1	D2	b	Z-d
2"	fifty	one hundred and eight	one hundred and fifty-two	one hundred and twenty point five	ninety-two	sixteen	4-19
2.5"	sixty-five	one hundred and twelve	one hundred and seventy-eight	one hundred and thirty-nine point five	one hundred and five	eighteen	4-19
3"	eighty	one hundred and fourteen	one hundred and ninety	one hundred and fifty-two point five	one hundred and twenty-seven	nineteen	4-19
4"	one hundred	one hundred and twenty-seven	two hundred and twenty-nine	one hundred and ninety point five	one hundred and fifty-seven	twenty-seven	8-19
5"	one hundred and twenty-five	one hundred and forty	two hundred and fifty-four	two hundred and sixteen	one hundred and eighty-six	twenty-seven	8-22
6"	one hundred and fifty	one hundred and forty	two hundred and seventy-nine	two hundred and forty-one point five	two hundred and sixteen	twenty-six	8-22
8"	two hundred	one hundred and fifty-two	three hundred and forty-three	two hundred and ninety-eight point five	two hundred and seventy	twenty-nine	8-22
10"	two hundred and fifty	one hundred and sixty-five	four hundred and six	three hundred and sixty-two	three hundred and twenty-four	thirty-one	12-25
12"	three hundred	one hundred and seventy-eight	four hundred and eighty-three	five hundred and thirty-two	three hundred and eighty-one	thirty-two	12-25
14"	three hundred and fifty	one hundred and ninety	five hundred and thirty-three	four hundred and seventy-six	four hundred and thirteen	thirty-five	12-29
16"	four hundred	two hundred and sixteen	five hundred and ninety-seven	five hundred and forty	four hundred and seventy	thirty-seven	16-29
18"	four hundred and fifty	two hundred and twenty-two	six hundred and thirty-five	five hundred and seventy-eight	five hundred and thirty-three	forty	16-32
20"	five hundred	two hundred and twenty-nine	six hundred and ninety-nine	six hundred and thirty-five	five hundred and eighty-four	forty-three	20-32
24"	six hundred	two hundred and sixty-seven	eight hundred and thirteen	seven hundred and fifty	six hundred and ninety-two	forty-eight	20-35
28"	seven hundred	two hundred and ninety-two	nine hundred and twenty-seven	eight hundred and sixty-four	eight hundred	seventy-one	28-35
32"	eight hundred	three hundred and eighteen	one thousand and sixty	nine hundred and seventy-eight	nine hundred and fourteen	eighty-one	28-41
36"	nine hundred	three hundred and thirty	one thousand one hundred and sixty-eight	one thousand and eighty-six	one thousand and twenty-two	ninety	32-41
40"	one thousand	four hundred and ten	one thousand two hundred and eighty-nine	one thousand and two hundred	one thousand one hundred and twenty-four	ninety	36-41

American standard flange butterfly valve (300Lb)

Nominal diameter DN		Size
		L	D	D1	D2	b	Z-d
2"	fifty	one hundred and eight	one hundred and sixty-five	one hundred and twenty-seven	ninety-two	twenty-three	8-19
2．5	sixty-five	one hundred and twelve	one hundred and ninety	one hundred and forty-nine	one hundred and five	twenty-six	8-22
3"	eighty	one hundred and fourteen	two hundred and ten	one hundred and sixty-eight point five	one hundred and twenty-seven	twenty-nine	8-22
4"	one hundred	one hundred and twenty-seven	two hundred and forty-one	two hundred	one hundred and fifty-seven	thirty-two	8-22
5"	one hundred and twenty-five	one hundred and forty	two hundred and seventy-nine	two hundred and thirty-five	one hundred and eighty-six	thirty-five	8-22
6"	one hundred and fifty	one hundred and forty	three hundred and eighteen	two hundred and seventy	two hundred and sixteen	thirty-seven	12-22
8"	two hundred	one hundred and fifty-two	three hundred and eighty-one	three hundred and thirty	two hundred and seventy	forty-two	12-25
10"	two hundred and fifty	one hundred and sixty-five	four hundred and forty-five	three hundred and eighty-seven point five	three hundred and twenty-four	forty-eight	16-29
12"	three hundred	one hundred and seventy-eight	five hundred and twenty-one	four hundred and fifty-one	three hundred and eighty-one	fifty-one	16-32
14"	three hundred and fifty	one hundred and ninety	five hundred and eighty-four	five hundred and fourteen point five	four hundred and thirteen	fifty-four	20-32
16"	four hundred	two hundred and sixteen	six hundred and forty-eight	five hundred and seventy-one point five	four hundred and seventy	fifty-eight	20-35
18"	four hundred and fifty	two hundred and twenty-two	seven hundred and eleven	six hundred and twenty-eight point five	five hundred and thirty-three	sixty-one	24-35
20"	five hundred	two hundred and twenty-nine	seven hundred and seventy-five	six hundred and eighty-six	five hundred and eighty-four	sixty-four	24-35
24"	six hundred	two hundred and sixty-seven	nine hundred and fourteen	eight hundred and thirteen	six hundred and ninety-two	seventy	24-41