Actuator K274Y072 (optional)

• Type of command: 2÷10 V

• Opening time: 60 s

• Maximum torque: 10 Nm

• Electric absorption: 4,5 VA, 5 W

• Insulation class: III

• Protection degree: IP54

• Room working temperature range: 0÷50 °C

• Room working humidity: 5÷95 % with non-condensing R.H.

• Electric cable length: 1 m (6 x 0,5 mm2)

• Possibility of manual control with maneuvering knob

6-way valves R274 and R274N

• Fluid working temperature range: 5÷90 °C

• Rated pressure (PN): 16 bar

• Maximum differential pressure: 2 bar

• Maximum glycol percentage: 50 % (the percentage of

glycol must be equal for both circuits - heating and

cooling)

• Leakage rate (according to EN12266-1): A, no leakage

• Connection for actuator: F04 - ISO 5211

Materials

• Valve body: brass CW617N or CW602N (DZR) depending

on version

• Gaskets: low-friction PTFE / EPDM

• Connection for actuator: PA66-GF30



Technical data

Calibrated washers P21S (optional)

Calibrated washers with seeger ring, made of stainless steel.

Losses of pressure

Loss of pressure values for valves R274Y033 and R274Y133 inclusive of delivery and return, with or without calibrated washers.

PRODUCT CODE

TOTAL Kv

(VALVE DELIVERY AND RETURN + WASHER)

Valve + P21SY001

0,25 (washer hole Ø 2,7 mm)

Valve + P21SY002

0,40 (washer hole Ø 3,5 mm)

Valve + P21SY003

0,65 (washer hole Ø 4,5 mm)

Valve + P21SY004

1,00 (washer hole Ø 6,0 mm)

Valve + P21SY005

1,30 (washer hole Ø 7,0 mm)

Valve + P21SY006

1,60 (washer hole Ø 8,0 mm)

Valve without P21S

1,90

0,1

0,01

1,0

10,0

Q [m3/h]

0,01

0,10

1,00

0,25

Kv:

0,4 0,65

1

1,3 1,61,9

Loss of pressure values for valves R274Y045, R274Y145, R274Y023, R274Y024 and R274Y025 inclusive of delivery and return, with

or without calibrated washers.

PRODUCT CODE

TOTAL Kv

(VALVE DELIVERY AND RETURN + WASHER)

Valve + P21SY011

0,25 (washer hole Ø 3 mm)

Valve + P21SY012

0,40 (washer hole Ø 4 mm)

Valve + P21SY013

0,65 (washer holea Ø 4,5 mm)

Valve + P21SY014

1,00 (washer hole Ø 5,8 mm)

Valve + P21SY015

1,30 (washer hole Ø 6,7 mm)

Valve + P21SY016

1,60 (washer hole Ø 7,5 mm)

Valve + P21SY017

2,50 (washer hole Ø 9,0 mm)

Valve + P21SY018

3,45 (washer hole Ø 12,7 mm)

R274Y023 without P21S

3,45

R274Y024 without P21S

4,00

R274Y025/045/145 without P21S

4,25



WARNING. The valve is suitable for installation in indoor rooms and

boiler rooms, and use with non-aggressive fluids (water, glycol-based water

complying with VDI 2035/ÖNORM 5195).

0,1

0,01

1,0

10,0

Q [m3/h]

0,01

0,10

1,00

0,25

Kv:

0,4 0,65

1

1,3 1,6 2,5 3,45

4,0

4,25

3,45