D373H Worm gear transmission clamp type manual hard seal butterfly valveDetailed product description：

Product Features:

1. The D373H worm gear transmission clamp type manual hard seal butterfly 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. The large-sized disc 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.

D373H worm gear drive clamp type hard seal butterfly valve main technical parameters:

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

D373H worm gear drive clamp type 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

D373H worm gear drive 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

D373H-10/16/25/Worm Gear Transmission Clamp type 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		2.5MPa
	L	H	H1	D1	4-Ф－M	D1	4-Ф－M	D1	4-Ф－M
fifty	forty-three	three hundred and fifty	one hundred and twelve	one hundred and twenty-five	Ф18	one hundred and twenty-five	Ф18	one hundred and twenty-five	Ф18
sixty-five	forty-six	three hundred and seventy	one hundred and fifteen	one hundred and forty-five	Ф18	one hundred and forty-five	Ф18	one hundred and forty-five	Ф18
eighty	forty-nine	three hundred and eighty	one hundred and twenty	one hundred and sixty	Ф18	one hundred and sixty	Ф18	one hundred and sixty	Ф18
one hundred	fifty-six	four hundred and twenty	one hundred and thirty-eight	one hundred and eighty	Ф18	one hundred and eighty	Ф18	one hundred and ninety	Ф23
one hundred and twenty-five	sixty-four	four hundred and sixty	one hundred and sixty-four	two hundred and ten	Ф18	two hundred and ten	Ф18	two hundred and twenty	Ф27
one hundred and fifty	seventy	five hundred and fifty-five	one hundred and seventy-five	two hundred and forty	Ф23	two hundred and forty	Ф23	two hundred and fifty	Ф27
two hundred	seventy-one	six hundred and five	two hundred and eight	two hundred and ninety-five	M20	two hundred and ninety-five	M20	three hundred and ten	M24
two hundred and fifty	seventy-six	six hundred and eighty	two hundred and forty-three	three hundred and fifty	M20	three hundred and fifty-five	M24	three hundred and seventy	M27
three hundred	eighty-three	eight hundred	two hundred and eighty-three	four hundred	M20	four hundred and ten	M24	four hundred and thirty	M27
three hundred and fifty	ninety-two	eight hundred and thirty-five	three hundred and ten	four hundred and sixty	M20	four hundred and seventy	M24	four hundred and ninety	M30
four hundred	one hundred and two	nine hundred and fifteen	three hundred and forty	five hundred and fifteen	M24	five hundred and twenty-five	M27	five hundred and fifty	M33
four hundred and fifty	one hundred and fourteen	nine hundred and sixty	three hundred and eighty	five hundred and sixty-five	M24	five hundred and eighty-five	M27	six hundred	M33
five hundred	one hundred and twenty-seven	one thousand and twenty	four hundred and ten	six hundred and twenty	M24	six hundred and fifty	M30	six hundred and sixty	M33
six hundred	one hundred and fifty-four	one thousand two hundred and twenty-five	four hundred and seventy	seven hundred and twenty-five	M27	seven hundred and seventy	M33	seven hundred and seventy	M36
seven hundred	one hundred and sixty-five	one thousand three hundred and fifty-five	five hundred and fifty	eight hundred and forty	M27	eight hundred and forty	M33	eight hundred and seventy-five	M39
eight hundred	one hundred and ninety	one thousand four hundred and seventy	six hundred and forty	nine hundred and fifty	M30	nine hundred and fifty	M36	nine hundred and ninety	M45
nine hundred	two hundred and three	one thousand five hundred and forty-five	seven hundred and ten	one thousand and fifty	M30	one thousand and fifty	M36	one thousand and ninety	M45
one thousand	two hundred and sixteen	one thousand seven hundred and ninety-five	seven hundred and seventy	one thousand one hundred and sixty	M33	one thousand one hundred and seventy	M39	one thousand two hundred and ten	M52
one thousand and two hundred	two hundred and fifty-four	one thousand nine hundred and sixty-five	eight hundred and ninety	one thousand three hundred and eighty	M36	one thousand three hundred and ninety	M45	one thousand four hundred and twenty	M5