Options Specifications
Valves and actuators (option)
NOTE: The motor valve assembly is normally closed.
■■ Valve actuators
A wide choice of actuators is available with two or four-way
valve bodies (three-way with integral bypass) to offer the right
solution for any controller type and customer requirement,
from on/off to proportional types, with either 230 V or 24 V
power supply:
-- On/off 230 V actuator
-- On/off 24 V actuator
-- Floating 3-point 230 V actuator
-- Floating 3-point 24 V actuator
-- Modulating 0-10 V/24 V actuator
When combined with LEC motors and WTC or NTC
controllers, floating 3-point 230-V actuators are
recommended to increase energy savings and enhance
comfort.
■■ Standard two-way valve body and three-way valve body
(with integral bypass)
Features of the 1/2” two-way and three-way valves for
42NL/NH sizes 2 to 5
-- 1/2” male BSP connection for union nuts
-- Straight valve body with arrow indicating direction of
flow embossed on valve body
-- Nominal size DN15 for 1/2’’ valve
-- Nominal pressure: PN 16 bar
Features of the 3/4” two-way and three-way valves for
42NH sizes 6 and 7
-- 3/4” male BSP connection for union nuts
-- Straight valve body with arrow indicating direction of
flow embossed on valve body
-- Nominal size DN20 for 3/4’’ valve
-- Nominal pressure: PN 16 bar
1
2
3
4
Pressure drop (kPa)
100
10
1
0.1
0.01
100
1000
10000
Water flow l/h, (l/s)
AIR TREATMENT
Legend
1
1/2” - ON/OFF valve 42NL/NH - Size 2 Kvs = 1
2
1/2” - ON/OFF valve 42NL/NH - Sizes 3, 4, 5 Kvs = 1.7
3
3/4” - ON/OFF valve 42NL/NH - Size 6 Kvs = 2.8
4
3/4” - ON/OFF valve 42NL/NH - Size 7 Kvs = 4
1
2
3
4
Pressure drop (kPa)
100
10
1
0.1
0.01
100
(0,027)
1000
(0,27)
10000
(2,7)
Water flow l/h, (l/s)
NOTE: 24V power supply actuators are not compatible
with Carrier controllers (Thermostats A/B/C/D, WTC
& NTC).
654
Legend
1
1/2” - ON/OFF valve 42NL/NH - Size 2 Kvs = 1
2
1/2” - ON/OFF valve 42NL/NH - Sizes 3, 4, 5 Kvs = 1.7
3
3/4” - ON/OFF valve 42NL/NH - Size 6 Kvs = 2.8
4
3/4” - ON/OFF valve 42NL/NH - Size 7 Kvs = 4
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7