Industrietechnik

VFMD - 2- and 3-way control valves

Externally threaded control valves, DN15-40, kvs 0.25-25, 5.5 mm stroke. Intended for use in heating and cooling systems together with the SEZ4… series of electromechanical actuators.

Specifications

Software & documentation

Articles

(22 st)

VFMD215-0.25

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

0.25 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L

Cover lid

DZR brass CW511L
VFMD215-0.4

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

0.4 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L

Cover lid

DZR brass CW511L
VFMD215-0.6

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

0.6 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L

Cover lid

DZR brass CW511L
VFMD215-1.0

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

1 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L

Cover lid

DZR brass CW511L
VFMD215-1.6

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

1.6 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L

Cover lid

DZR brass CW511L
VFMD215-2.5

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

2.5 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L

Cover lid

DZR brass CW511L
VFMD215-4.0

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

4 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L

Cover lid

DZR brass CW511L
VFMD220-6.3

Connection

Internal G 3/4" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN20

Kvs

6.3 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L

Cover lid

DZR brass CW511L
VFMD225-10

Connection

Internal G 1" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN25

Kvs

10 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

Galvanized malleable cast iron

Cover lid

DZR brass CW511L
VFMD232-16

Connection

Internal G 1" 1/4 on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN32

Kvs

16 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

Galvanized malleable cast iron

Cover lid

DZR brass CW511L
VFMD240-25

Connection

Internal G 1" 1/2 on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN40

Kvs

25 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

Galvanized malleable cast iron

Cover lid

DZR brass CW511L
VFMD315-0.25

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

0.25 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L
VFMD315-0.4

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

0.4 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L
VFMD315-0.6

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

0.6 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L
VFMD315-1.0

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

1 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L
VFMD315-1.6

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

1.6 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L
VFMD315-2.5

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

2.5 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L
VFMD315-4.0

Connection

Internal G 1/2" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN15

Kvs

4 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L
VFMD320-6.3

Connection

Internal G 3/4" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN20

Kvs

6.3 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

DZR brass CW511L
VFMD325-10

Connection

Internal G 1" on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN25

Kvs

10 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

Galvanized malleable cast iron
VFMD332-16

Connection

Internal G 1 1/4 on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN32

Kvs

16 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

Galvanized malleable cast iron
VFMD340-25

Connection

Internal G 1" 1/2 on union end

Actuator connection

Standard for RVAZ4 actuators

Rangeability

50:1

Stroke

5.5 mm

Nominal diameter

DN40

Kvs

25 m³/h

Max. diff. pressure

400 kPa

Media temperature

2…110 °C

Nipple

Galvanized malleable cast iron

Specifications

Specifications for VFMD - 2- and 3-way control valves
Application	Heating, Cooling, Ventilation, Fan coil
Pressure rating	PN16
Connection types	BSP externally threaded according to ISO 228/1
Flow characteristics	Linear
Leakage	0.0 % of Kvs ()
Media	Hot water, Cold water, Glycol-mixed water (max. 50 % glycol)
Closing direction	When stem is pulled outward
Max. diff. pressure	400 kPa
Media temperature	2…110 °C
Body	Brass CW614N
Seat	Brass CW614N
Plug	Brass CW614N
Stem	Stainless steel 1.4305
Seat packing	EPDM
O-rings	EPDM
Stuffing box	Chromed brass CW614N
Nut	Galvanized malleable cast iron
Fitting seal	Novatec Premium 2, Nitrile bonded aramid fibre with graphite

Software & documentation

Product sheet

VFMD2 / VFMD3

VFMD - 2- and 3-way control valves

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Articles

Specifications

Software & documentation

Product sheet