Danfoss 065B2506 - VFG 21, PN 16, DN 40, 20 m³/h, Flange

Product details

Type		VFG 21
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		VFG21 PN16 40/20 2-way flange flow/ret
Diameter [mm]		40 mm
Differential pressure range [bar] [Max]		16 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]		0.01
Media pH [Max]		10
Media pH [Min]		7
Media temperature [°C] [Max]		150 °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 16
Pressure nominal [bar]		16 bar
REACH Candidate List substances		Lead (CAS no. 7439-92-1)
Sealing material		EPDM
Sealing type		Soft sealing cone
Spindle position		Normally open
Stroke [mm]		8 mm
Valve body material		Grey cast iron EN-GJL-250 (GG-25)
Valve cone material		Stainless steel, mat. No. 1.4404
Valve seat material		Stainless steel, mat. No. 1.4021
Valve size		DN 40

Operating guides, design guides, certificates and CAD drawings for 065B2506 are available on request. Ask for documents →