Danfoss 065B5603 - VFQ 221, PN 16, DN 125, 250 m³/h, Flange

Product details

Type		VFQ 221
Product group		Pressure flow controllers
Application		District heating and cooling
Cavitation factor		0.4
Cavitation factor 100%		0.39
Cavitation factor 25%		0.68
Cavitation factor 50%		0.47
Cavitation factor 75%		0.42
China RoHS compliance		Out of scope
Connection standard		EN 1092-1
Connection types		Flange
Contains batteries		No
Description		Pressure operated valves
Diameter [mm]		125 mm
Differential pressure range [bar] [Max]		15 bar
Differential pressure range [bar] [Min]		15 bar
EU RoHS compliance		Yes with exemptions
EU RoHS exemption clause		6(c)
Kvs values [m³/h]		250 m³/h
Leakage rate [% Kvs]		0.03
Leakage through port max. [% Kvs]		0.03
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
Operating pressure [bar] [Max]		16 bar
Permissible media		District heating/cooling circulation water
Pressure class		PN 16
Pressure nominal [bar]		16 bar
Pressure relieve system		Chamber
REACH Candidate List substances		Lead (CAS no. 7439-92-1)
Sealing DP material		EPDM
Sealing type		Soft sealing cone
Valve body material		Grey cast iron EN-GJL-250 (GG-25)
Valve cone DP material		Stainless steel mat. No. 1.4021
Valve cone material		Stainless steel, mat. No. 1.4021
Valve seat DP material		Stainless steel, mat. No. 1.4021
Valve seat material		Stainless steel, mat. No. 1.4021
Valve size		DN 125

Operating guides, design guides, certificates and CAD drawings for 065B5603 are available on request. Ask for documents →