D673H Pneumatic Clamp on Hard Seal Butterfly ValveDetailed product description：

Characteristics of D673H Pneumatic Clamp on Hard Seal 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 viewed.
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 disc 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 a 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.

Main technical parameters of D673H pneumatic clamp type hard seal butterfly valve:

Nominal meridian DN (mm)	50~2000
Nominal pressure PN (MPa)	zero point six	one	one point six	two point five
Sealing test (MPa)	zero point six six	one point one	one point seven six	two point seven five
Strength test (MPa)	zero point nine	one point five	two point four	three point seven five
Applicable temperature	Carbon steel: -29 ℃~425 ℃ Stainless steel: -40 ℃~650 ℃
Applicable Medium	Water, air, natural gas, oil products, and weakly corrosive fluids
leakage rate	Compliant with GB/T13927-92 standard
Drive Type	Worm gear transmission, electric, pneumatic, hydraulic

D673H Pneumatic Clamp on Hard Seal Butterfly Valve Main Component Materials:

Part Name	Material
valve body	WCB、 Alloy steel, stainless steel QT450-10
butterfly valve disc	WCB、 Alloy steel, stainless steel QT450-10
valve stem	2Cr13 stainless steel, alloy steel
Seal ring	stainless steel ring
filler	flexible graphite

D673H pneumatic clamp type hard seal butterfly valve adopts the standard:

Manufacturing Standard	JB/T 8527-97
Flange Standard	GB9113-2000
Structural length standard	GB12221-89
Inspection Criteria	GB/T 13927-92

D673H-10/16/Pneumatic Clamp on Hard Seal Butterfly Valve Main External Connection Dimensions: (Unit: mm)

The nominal meridian (DN)	Main dimensions			Flange size and bolt specifications
				1.0MPa		1.6MPa
	L	H	H1	D1	4-Ф－M	D1	4-Ф－M
fifty	forty-three	six hundred and twenty-five	one hundred and twelve	one hundred and twenty-five	Ф18	one hundred and twenty-five	Ф18
sixty-five	forty-six	six hundred and twenty-five	one hundred and fifteen	one hundred and forty-five	Ф18	one hundred and forty-five	Ф18
eighty	forty-nine	six hundred and forty-five	one hundred and twenty	one hundred and sixty	Ф18	one hundred and sixty	Ф18
one hundred	fifty-six	six hundred and seventy-five	one hundred and thirty-eight	one hundred and eighty	Ф18	one hundred and eighty	Ф18
one hundred and twenty-five	sixty-four	seven hundred and fifteen	one hundred and sixty-four	two hundred and ten	Ф18	two hundred and ten	Ф18
one hundred and fifty	seventy	eight hundred	one hundred and seventy-five	two hundred and forty	Ф23	two hundred and forty	Ф23
two hundred	seventy-one	eight hundred and fifty	two hundred and eight	two hundred and ninety-five	M20	two hundred and ninety-five	M20
two hundred and fifty	seventy-six	nine hundred and twenty-five	two hundred and forty-three	three hundred and fifty	M20	three hundred and fifty-five	M24
three hundred	eighty-three	one thousand and thirty-five	two hundred and eighty-three	four hundred	M20	four hundred and ten	M24
three hundred and fifty	ninety-two	one thousand and seventy	three hundred and ten	four hundred and sixty	M20	four hundred and seventy	M24
four hundred	one hundred and two	one thousand one hundred and ninety	three hundred and forty	five hundred and fifteen	M24	five hundred and twenty-five	M27
four hundred and fifty	one hundred and fourteen	one thousand two hundred and fifty	three hundred and eighty	five hundred and sixty-five	M24	five hundred and eighty-five	M27
five hundred	one hundred and twenty-seven	one thousand two hundred and ninety	four hundred and ten	six hundred and twenty	M24	six hundred and fifty	M30
six hundred	one hundred and fifty-four	one thousand four hundred and fifty-five	four hundred and seventy	seven hundred and twenty-five	M27	seven hundred and seventy	M33
seven hundred	one hundred and sixty-five	one thousand five hundred and eighty-five	five hundred and fifty	eight hundred and forty	M27	eight hundred and forty	M33
eight hundred	one hundred and ninety	one thousand and seven hundred	six hundred and forty	nine hundred and fifty	M30	nine hundred and fifty	M36
nine hundred	two hundred and three	one thousand nine hundred and sixty-five	seven hundred and ten	one thousand and fifty	M30	one thousand and fifty	M36
one thousand	two hundred and sixteen	two thousand and fifteen	seven hundred and seventy	one thousand one hundred and sixty	M33	one thousand one hundred and seventy	M39
one thousand and two hundred	two hundred and fifty-four	two thousand two hundred and fifty	eight hundred and ninety	one thousand three hundred and eighty	M36	one thousand three hundred and ninety	M45