QFF3 Needle valveDetailed product description：

Needle valves have good sealing performance and are generally used for sealing small flow, high pressure gas or liquid (such as steam, oil) media. The types of valves are generally divided into ordinary globe valves, needle globe valves, angle needle valves, instrument needle valves, bellows needle valves, valve groups, etc. The needle type globe valve has good sealing performance and long service life. Even if the sealing surface is damaged, only vulnerable parts need to be replaced to continue using it. The card sleeve type instrument valve has the advantages of easy installation and disassembly, tight connection, high fire prevention, explosion prevention, and pressure resistance, and good sealing performance. It is an advanced connection method valve in power plants, refineries, chemical plants, and instrument measurement pipelines. Manual globe valves and ball valves can be installed at any position in the pipeline.

Main component materials of QFF3 needle valve:

Part Name	valve body	valve stem	Valve base	filler	Packing valve cover	handwheel
QFF3-160-DN5	Carbon steel	Chromium stainless steel		Polytetrafluoroethylene flexible graphite	Carbon steel	high-quality carbon steel
QFF3-320P-DN5	Chromium nickel stainless steel	Chromium stainless steel	Chromium nickel stainless steel		stainless steel

Main performance specifications of QFF3 needle valve:

Model	Nominal pressure (Mpa)	Test pressure PS (Mpa)			Work pressure (Mpa)	Working temperature (℃)	Applicable Medium
		housing	Sealing (liquid)	Sealing (gas)
QFF3-320-DN5	thirty-two	forty-eight	thirty-five point two	zero point six	thirty-two	P≤540℃	liquefied petroleum gas Water, acid, steam Oil products, etc
						C≤425℃

Main appearance and connection dimensions of QFF3 needle valve:

Model	Nominal diameter DN (mm)	dimensions						Weight (kg)
		L1	D1	Do	H	H1	L2
QFF3-320-DN5	five	two hundred	fourteen	sixty-five	two hundred and thirty-four	two hundred and sixty	fifty-four	three point eight