KQ41F/Y/H flange sulfur resistant ball valveDetailed product description：

The OQK series sulfur resistant ball valve is designed, selected, manufactured, tested, surface treated, and painted in strict accordance with the relevant standards of the National Association of Corrosion Engineers (NACE) in order to meet the requirements of customers for resistance to sulfurization and stress cracking in sulfurized environments.

The OQK series sulfur resistant ball valve not only has a wide selection of materials, but also uses surface nickel plating or 316 material for the internal components, and a specially made polymer material for the sealing ring. Valves are not only corrosion-resistant and have strong resistance to sulfurization, but also have good fire resistance, anti-static, and sealing performance. They are suitable for a wide range of pressure and temperature, with complete full bore and reduced diameter, and can be equipped with various driving devices. They are an ideal valve choice for chemical, petroleum refining, oil and gas extraction and transportation systems.
Nominal diameter: DN50-400mm 2 "-16"
Shrinkage: DN50-450mm 2 "-18"
Nominal pressure: PN2.5-10.0MPa
CLASS：150-900Lb
Applicable temperature: -196 ℃ -300 ℃

Main performance and specifications of KQ41F sulfur resistant ball valve

Nominal pressure PN(MPa)	Test pressure (MPa)			Pressure level	Test pressure (MPa)
	housing	High pressure liquid seal	Low pressure gas seal		housing	High pressure liquid seal	Low pressure gas seal
two point five	three point seven five	two point seven five	zero point six	CLASS150	two point nine four	two point one six	zero point six
four	six	four point four		CLASS300	seven point seven six	five point six two
six point four	nine point six	seven		CLASS600	fifteen point three	eleven point two three
ten	fifteen	eleven		CLASS900	twenty-three	sixteen point eight five

KQ41F sulfur resistant ball valve model, component materials, and main parameters

Main Models		Part Name	Material
			carbon steel	low-temperature steel	stainless steel
OQK4 1/7E OQK34 1/7E OQK64 1/7E OQK94 1/7E		valve body	A105	A350LF2	A182 F316
		sphere	A105+nickel plating	A350LF2	A182 F316
		Valve stem, fixed shaft	45/40cr+nickel plating	42CrMo+nickel plating	A182 F316
		valve seat	A105+nickel plating	A350LF2+nickel plating	A182 F316
		Seal ring	Enhanced polytetrafluoroethylene to polystyrene
		O-ring	fluororubber
		Gaskets and fillers	Flexible graphite V-shaped polytetrafluoroethylene
		bushing	SF self-lubricating bearing
		bolt	A193 B7M	A193 B7M	three hundred and sixteen
		Nut	A194 2HM	A194 7M	three hundred and sixteen
should Use rule Fan	Structure length according to	GB12221-89     ANSI B16.10
	Flange size according to	JB79-59     GB9113     HG20592-97     ANSI B16.5
	Welding standards according to	GB12221-89     ANSI B16.25
	Inspection and testing according to	GB/T13927     JB/T9092-99     API598
	Fire test according to	API 607     BS6755 II

KQ41F/Y/H flange sulfur resistant ball valve