Technical and mechanical design - Data Sheet - VVF42.100-125 - VVF42.100-160 - VVF42.100-160K - VVF42.125-200 - VVF42.125-250 - VVF42.125-250K - VVF42.15-1.6 - VVF42.15-2.5 - VVF42.15-4 - VVF42.150-315 - VVF42.150-360K - VVF42.150-400 - VVF42.20-6.3 - VVF42.25-10 - VVF42.25-6.3 - VVF42.32-16 - VVF42.40-16 - VVF42.40-25 - VVF42.50-31.5 - VVF42.50-40 - VVF42.50-40K - VVF42.65-50 - VVF42.65-63 - VVF42.65-63K - VVF42.80-100 - VVF42.80-100K - VVF42.80-80 - VXF42.100-125 - VXF42.100-160 - VXF42.125-200 - VXF42.125-250 - VXF42.15-1.6 - VXF42.15-2.5 - VXF42.15-4 - VXF42.150-315 - VXF42.150-400 - VXF42.20-6.3 - VXF42.25-10 - VXF42.25-6.3 - VXF42.32-16 - VXF42.40-16 - VXF42.40-25 - VXF42.50-31.5 - VXF42.50-40 - VXF42.65-50 - VXF42.65-63 - VXF42.80-100

Technical and mechanical design

The illustrations below show the basic design of the valves. Constructional features, such as the shape of plugs, may differ.

2-port valves

Fluids

Closing against pressure

For use with all actuators

2-port valves pressure compensated

The VVF42..K valves use a pressure compensated plug. This enables the same type of actuators to be used for the control of volumetric flow at higher differential pressures.

Fluids

Closing against pressure

For use with all actuators

Note

2-port valves do not become 3-port valves by removing the blank flange!

3-port valves

Fluids

Mixing valve (preferred use)

Diverting valve

Sizing

Flow chart

Δp_max values apply for the mixing function. Δp_max values for diverting function, see "Type summary", page 2.

Valve characteristics

2-port
valves

0…30 %:

Linear

30…100 %:

Equal percentage

n_gl = 3 to VDI / VDE 2173

For high k_vs values the valve characteristic is optimized for maximum volumetric flow k_V100.

For product lines:
VVF42.125-250
VVF42.125-250K
VVF42.150-400
VVF42.150-360K

0…100 %:

Linear

3-port valves

Throughport A-AB
0...30 %:	Linear
30...100 %:	Equal percentage n_gl = 3 to VDI / VDE 2173
For high k_vs values the valve characteristic is optimized for maximum volumetric flow k_v100.
Bypass B-AB
0...100 %:		Linear
Tor AB	=	constant flow
Tor A	=	variable flow
Tor B	=	bypass (variable flow)

Mixing:	Flow from port a and port B to port AB
Diverting:	Flow from port AB to port A and port B

For product lines:
VXF42.125-250
VXF42.150-400

	Throughport A-AB
	0...100%:	Linear
	Bypass B-AB
	0...100%:	Linear

Operating pressure
and medium
temperature
Fluids, PN16
with V..F42..


	Curve for saturated steam; steam forms below this line
	Operating pressure according to EN 1092-1, valid for 2-port valves with blank flange

Operating pressure and operating temperatures according to ISO 7005, EN 1092, and EN 12284

Notes

All relevant local directives must be observed.

Medium
compatibility and
temperature ranges

Medium	Temperature range		Type			Notes
Medium	T_min [°C]	T_max [°C]	VVF42..	VVF42..K	VXF42..	Notes
Cold water	1	25	x	x	x	-
Low-temp. hot water	1	130	x	x	x	-
High temp. hot water ¹⁾	130	150	x	x	x	-
	150	180	-	-	-	-
Water with antifreeze	-5	150	x	x	x	For medium temperatures below 0 °C, the stem heating ASZ6.6 has to be installed.
	-10	150	x	-³⁾	x
	-20	150	-	-	-
Cooling water ²⁾	1	25	-	-	-	-
Brines	-5	150	x	x	x	For medium temperatures below 0 °C, the stem heating ASZ6.6 has to be installed.
	-10	150	x	-³⁾	x
	-20	150	-	-	-
Super-clean water (demineralized and deionized)	1	150	-	-	-
Demineralized water according to VDI2035 / SWKI_BT102-01	1	150	x	x	x

¹⁾	Differentiation due to saturated steam curve
²⁾	Open circuits
³⁾	VVF42..K valves cannot be used with media below -5 °C due to the compensation sealing material.

Fields of use

Fields of use		Type
Fields of use		VVF42..	VVF42..K	VXF42..
Generation	Boiler plants	x	x	x
	District heating plants	x	x	-
	Refrigeration plants	x	x	x
Distribution	Heating groups	x	x	x
Distribution	Ventilation and air-handling units	x	x	x