VQ647H,VQ677H pneumatic V-type regulating ball valvesDetailed product description：

VQ647H and VQ677H pneumatic V-type regulating ball valves adopt a cylindrical spring preloaded structure with compensatory movable metal valve seat, ensuring reliable sealing performance. The ball core and valve seat will not cause jamming or detachment, and have a long service life.
The V-shaped cut on the ball core has a shear effect with the metal valve seat, which is particularly suitable for controlling high viscosity media containing fibers, solid particles, and slurries. The pulp used in the structural manufacturing paper industry is particularly superior.
The valve has a large flow capacity, low pressure loss, and the medium will not deposit in the valve body cavity. The valve not only has an approximately proportional flow characteristic and a large adjustable range, with a maximum adjustable ratio of 100:1, but also has precise adjustment and reliable positioning functions.

Material List of Main Parts for VQ647H and VQ677H Pneumatic V-shaped Regulating Ball Valves

Part Name	Material
Valve body and valve cover	WCB	CF 8
Seal ring	2Cr13+nitridation	304+Nitriding
sphere	2Cr13+hard grid	304+hard grid
Valve seat, valve stem	2Cr13	three hundred and four
Gasket	Flexible graphite+stainless steel	Flexible graphite+stainless steel
Double-ended stud	35CrMoA	1Cr18Ni9Ti

performance specifications

Nominal pressure	Test pressure (MPa)		Applicable Medium	Operating temperature
	Shell Test	Sealing Test
one point six	two point four	one point seven six	Water, oil, gas, and high viscosity media containing fibers, solid particles, etc	-28℃～≤550℃
two point five	three point seven five	two point seven five
four	six	four point four
Application Specification	flange connection	JB79-59    GB9113    HG20592-97    ANSI B16.5
	Inspection and testing	JB/T9092-99               API 598

Main external dimensions

Nominal or pressure level	Nominal diameter		Dimensions (mm)
	（mm）	（in）	W	L	W1	L1	d	d1	H1	H
PN1.6MPa	twenty-five	-	fifty	-	twenty-five	-	sixty-four	thirty-eight	fifty-seven	two hundred
	forty	-	sixty	-	twenty-five	-	eighty-two	forty-nine	sixty-three	two hundred and five
	fifty	-	seventy-five	one hundred and twenty-four	thirty-two	sixty-two	one hundred	sixty	ninety-two	two hundred and twenty-five
	sixty-five	-	eighty	one hundred and forty-five	thirty-eight	seventy-two point five	one hundred and twenty	seventy-five	one hundred	two hundred and thirty-five
	eighty	-	one hundred	one hundred and sixty-five	forty-five	eighty-two point five	one hundred and thirty-one	eighty-nine	one hundred and eight	two hundred and sixty
	one hundred	-	one hundred and fifteen	one hundred and ninety-four	fifty	ninety-seven	one hundred and fifty-eight	one hundred and thirteen	one hundred and seventeen	two hundred and seventy
	one hundred and twenty-five	-	one hundred and thirty-five	two hundred and ten	fifty-five	one hundred and five	one hundred and eighty	one hundred and forty	one hundred and forty	three hundred and twenty
	one hundred and fifty	-	one hundred and sixty	two hundred and twenty-nine	sixty-five	one hundred and fourteen point five	two hundred and sixteen	one hundred and sixty-four	one hundred and seventy-seven	three hundred and forty
	two hundred	-	two hundred	two hundred and forty-three	eighty	one hundred and twenty-one point five	two hundred and sixty-eight	two hundred and five	two hundred	three hundred and ninety
	two hundred and fifty	-	two hundred and forty	two hundred and ninety-seven	ninety	one hundred and forty-eight point five	three hundred and twenty-six	two hundred and fifty-nine	two hundred and fifty-two	four hundred and twenty
	three hundred	-	-	three hundred and thirty-eight	-	one hundred and sixty-nine	-	three hundred	two hundred and seventy	five hundred and ten
PN2.5MPa	twenty-five	-	fifty	-	twenty-five	-	sixty-four	thirty-eight	fifty-seven	two hundred
	forty	-	sixty	-	twenty-five	-	eighty-two	forty-nine	sixty-three	two hundred and five
	fifty	-	seventy-five	one hundred and twenty-four	thirty-two	sixty-two	one hundred	sixty	ninety-two	two hundred and twenty-five
	sixty-five	-	eighty-five	one hundred and forty-five	thirty-eight	seventy-two point five	one hundred and twenty	seventy-five	one hundred	two hundred and thirty-five
	eighty	-	one hundred	one hundred and sixty-five	forty-five	eighty-two point five	one hundred and thirty-one	eighty-nine	one hundred and eight	two hundred and sixty
	one hundred	-	one hundred and fifteen	one hundred and ninety-four	fifty	ninety-seven	one hundred and fifty-eight	one hundred and thirteen	one hundred and seventeen	two hundred and seventy
	one hundred and twenty-five	-	one hundred and thirty-five	two hundred and ten	fifty-five	one hundred and five	one hundred and eighty	one hundred and forty	one hundred and forty	three hundred and twenty
	one hundred and fifty	-	one hundred and sixty	two hundred and twenty-nine	sixty-five	one hundred and fourteen point five	two hundred and sixteen	one hundred and sixty-four	one hundred and seventy-seven	three hundred and forty
	two hundred	-	two hundred	two hundred and forty-three	eighty	one hundred and twenty-one point five	two hundred and sixty-eight	two hundred and five	two hundred	three hundred and ninety
	two hundred and fifty	-	two hundred and forty	two hundred and ninety-seven	ninety-two	one hundred and forty-eight point five	three hundred and twenty-six	two hundred and fifty-nine	two hundred and fifty-two	four hundred and twenty
	three hundred	-	-	three hundred and thirty-eight	-	one hundred and sixty-nine	-	three hundred	two hundred and seventy	five hundred and ten
ClASS150	twenty-five	-	fifty	-	twenty-five	-	sixty-four	thirty-eight	fifty-seven	two hundred
	forty	11/2	sixty-five	-	twenty-five	-	eighty-two	forty-nine	sixty-three	two hundred and five
	fifty	two	seventy-five	one hundred and twenty-four	thirty-two	sixty-two	one hundred	sixty	ninety-two	two hundred and twenty-five
	sixty-five	21/2	eighty-five	one hundred and forty-five	thirty-eight	seventy-two point five	one hundred and twenty	seventy-five	one hundred	two hundred and thirty-five
	eighty	three	one hundred	one hundred and sixty-five	forty-five	eighty-two point five	one hundred and thirty-one	eighty-nine	one hundred and eight	two hundred and sixty
	one hundred	four	one hundred and fifteen	one hundred and ninety-four	fifty	ninety-seven	one hundred and fifty-eight	one hundred and thirteen	one hundred and seventeen	two hundred and seventy
	one hundred and twenty-five	five	one hundred and thirty-five	two hundred and ten	fifty-five	one hundred and five	one hundred and eighty	one hundred and forty	one hundred and forty	three hundred and twenty
	one hundred and fifty	six	one hundred and sixty	two hundred and twenty-nine	sixty-five	one hundred and fourteen point five	two hundred and sixteen	one hundred and sixty-four	one hundred and seventy-seven	three hundred and forty
	two hundred	eight	two hundred	two hundred and forty-three	eighty	one hundred and twenty-one point five	two hundred and sixty-eight	two hundred and five	two hundred	three hundred and ninety
	two hundred and fifty	ten	two hundred and forty	two hundred and ninety-seven	ninety-two	one hundred and forty-eight point five	three hundred and twenty-six	two hundred and fifty-nine	two hundred and fifty-two	four hundred and twenty
	three hundred	twelve	-	three hundred and thirty-eight	-	one hundred and sixty-nine	-

VQ647H, VQ677H Pneumatic V-shaped Regulating Ball Valve