Danfoss 065B2681 - VFQ 2, PN 40, DN 40, 20 m³/h, Flange

Product details

Type		VFQ 2
Product group		Pressure flow controllers
Application		District Heating
Cavitation factor		0.55
Cavitation factor 100%		0.34
Cavitation factor 25%		0.58
Cavitation factor 50%		0.52
Cavitation factor 75%		0.5
China RoHS compliance		Out of scope
Connection standard		EN 1092-1
Connection types		Flange
Contains batteries		No
Description		VFQ2 PN40 40/20 2-way flange flow/return
Diameter [mm]		40 mm
Differential pressure range [bar] [Max]		20 bar
EU RoHS compliance		Out of scope
Flow characteristic		Linear optimized
Function		Pressure relief
Kvs values [m³/h]		20 m³/h
Leakage through port max. [% Kvs]		0.03
Media pH [Max]		10
Media pH [Min]		7
Media temperature [°C] [Max]		200 °C
Media temperature [°C] [Min]		2 °C
Medium alternative		Glycolic water up to 30%
Mounting version		Free
Number of ports		2
Permissible media		District heating/cooling circulation water
Pressure class		PN 40
Pressure nominal [bar]		40 bar
REACH Candidate List substances		Lead (CAS no. 7439-92-1)
Sealing type		Metal sealing cone
Spindle position		Normally open
Stroke [mm]		8 mm
Valve body material		GS-C 25
Valve cone material		Stainless steel, mat. No. 1.4404
Valve size		DN 40

Operating guides, design guides, certificates and CAD drawings for 065B2681 are available on request. Ask for documents →