Fan-coil valves Series 2131-3131-4131

69-0015-UK
23-10-2008
11:05
Pagina 1
Fan-coil valves
Series 2131 - 3131 - 4131
Main features
Complete range in the following versions :
• 2-way - DN: 1/2”, 3/4”, 1”
• 3-way - DN: 1/2”, 3/4”, 1”
• 3-way with 4 ports - DN: 1/2”, 3/4”
- The 3-way version and the 3-way versions with
4 ports can be used as diverting or mixing valves
of compact size and reduced weights.
The valves are motorized with actuators series
22C or actuators with stroke 2.5 mm with
ring nut M30x1.5.
69-0015-UK
23-10-2008
11:05
Pagina 2
FAN-COIL VALVES
Description
2
Fan-coil control valves series 2131, 3131, 4131 are used for controlling the flow of hot or cold water in heating
and air conditioning systems. They are operated by electric actuators with max. stroke of 2.5 mm. such as
electrothermic actuator series 22C.
As standard, the valves are available in the configuration with male thread in the following versions :
• 2-way series 2131
• 3-way series 3131
• 3-way with 4 ports series 4131 with built-in by-pass.
Operation of the valve plug is by electrothermic actuator series 22C, available in the following versions:
• NO (normally open) 2-wire(Standard) or 4-wire (with auxiliary microswitch contact)
• NC (normally closed) 2-wire (Standard) or 4-wire (with auxiliary microswitch contact)
All actuators of the 22C series can easily be fastened to the valve body with a threaded ring nut. (M30x1.5).
2131
Two-way brass valve for fan-coils.
ON/OFF operation with actuators series 22C.
Max. operating temperature: 100°C. Disc stroke: 2.5 mm.
Nominal pressure: 16 bar.
Type
2131
2131
2131
Part number
213112
213134
21311
Dn
1/2" MM
3/4" MM
1" MM
Kvs
1,7
2,8
4,5
Weight (g)
200
200
500
3131
Three-way brass valve for fan-coils. ON/OFF operation with actuators series 22C.
Max. operating temperature: 100°C. Disc stroke: 2.5 mm. Can be used both as
mixing and diverting valve, except for version 31311 which can only be used as
diverting valve. Nominal pressure: 16 bar.
The Kvs and by-pass Kvs values given in the table alongside refer to the valve
used for diverting service.
Type
3131
3131
3131
Part number
313112
313134
31311
Dn
1/2" MM
3/4" MM
1" MM
Kvs
1,7
2,8
4,5
Kvs By-bass
1,3
1,8
3,1
Weight (g)
200
250
550
VU
Tee fitting for creating by-pass in valves series 3131 (Dn 1“).
Type
VU
Part number
VU311
Dn
1" MM
Weight (g)
250
69-0015-UK
23-10-2008
11:05
Pagina 3
FAN-COIL VALVES
4131
Three-way brass valve with 4 connections for fan-coils. ON/OFF operation with
actuators series 22C. Max. operating temperature: 100°C. Disc stroke: 2.5 mm.
Can be used both as mixing and diverting valve. Nominal pressure: 16 bar.
The Kvs and by-pass Kvs values given in the table alongside refer to the valve
used for diverting service.
Type
4131
4131
Part number
413112
413134
Dn
1/2" MM
3/4" MM
Kvs
1,7
2,8
Kvs By-bass
1,3
1,8
Weight (g)
350
400
840
Soft sealed union with nut for zone valves series 2131, 3131, 4131.
Type
840
840
840
Part number
8401212GAS
8403434GAS
84011GAS
Dn
1/2" x 1/2"
3/4" x 3/4"
1" x 1"
Weight (g)
50
50
50
Application
The valves are used for shutting off (series 2131, two-way) or diverting/mixing (series 3131 - 4131, 3-way and
3-way with 4 ports size 1/2” e 3/4”), the heat transfer fluid to a heating or air conditioning system as required by
the room thermostat (or timing thermostat).
The 3-way fan-coil valves series 3131 or 3-way with 4 ports series 4131, thanks to the special configuration of
the plug controlling the by-pass flow, can be used equally well as diverting or mixing valves (thus optimizing to the
full the various plumbing requirements in assembly).
Diverting
A
AB
B
Mixing
B
AB
A
3
69-0015-UK
23-10-2008
11:05
Pagina 4
FAN-COIL VALVES
Operation
4
Operation of the fan-coil control valves 2131,3131,4131 is through the movement of the plug which shuts off the
heat transfer fluid: the ON/OFF action of the plug is controlled by the actuator series 22C whose internal motor
consists of a wax thermostatic element activated by a PTC thermistor against a signal sent by a room thermostat
(or timing thermostat). The electrochemical actuator series 22C, in the 4-wire version, is provided with an
auxiliary contact for additional controls (metering, control of pumps, fans or other equipment). The mechanical
characteristic of the valves is of the Normally Open type. It can be adjusted or fully closed by manually turning the
threaded plastic cap, provided on the valve. This threaded cap acts directly on the valve stem.
When coupled to the 22C NC actuator, under rest conditions (actuator not energized), the valve becomes
• normally closed (NC) (straight way closed and by-pass open if 3-way type); when the actuator is energized,
the valve is opened.
When coupled to the 22C NA actuator, under rest conditions (actuator not energized), the valve remains
• normally open (NO) (straight way open and by-pass closed if 3-way type); when the actuator is energized,
the valve is closed.
The hydraulic flow rate and pressure drops characteristics of the valves are given in appropriate charts; instead,
when coupled with the ON/OFF actuators, they assume the characteristics associated with such device.
The three-way valves (or three-way valves with 4 ports) are designed and built to be used both as diverting valves
(one inlet and two outlets) and mixing valves (two inlets and one outlet). It is recommended to observe the
operating ⌬Pmax given in the table in order to avoid risk of malfunctions and/or noise.
The reliability of the fan-coil control valves 2131, 3131, 4131 is guaranteed by the 100% testing on the
production, which checks the hydraulic seals of the valve body and its components towards the outside and the
seal of the plug in its flow shut-off function.
Design features
Body
Stem
Spring
Plug rubber
Technical features common to the entire range
Max pressure, models w. constant Kv
Max pressure, models w. variable Kv
Min. fluid temperature
Max. fluid temperature
Liquids which can be used
Plug stroke
By-pass leakage
Actuator connection
Brass CW617N
Brass with chemical nickel-plating
Stainless steel
EPDM
16 bar
10 bar
4°C
110°C
Water (with glycol ⱕ 50%)
2.5 mm
⬍ 0,02 % Kvs
Threaded ring nut M30 x 1.5
Installation
Choice of the fan-coil control valves depends on the type of plumbing systems as well as the required flow rate
and pressure drop characteristics.
In systems with 2-way control valves it is advisable to provide by-pass valves series 466 to ensure a minimum
recirculation of the fluid.
Before mounting the valves, make sure that the piping is clean, and free from welding slag or the like.
It is recommended not to install the valve with the 22C actuator facing down.
The valves can be connected by using the soft-sealed tailpieces series 840 with the range of single-piece
or union fittings (3-piece).
The 1” three-way valves can use the TEE fitting (part No. VU311 - DN 1”) for making the by-pass.
23-10-2008
11:05
Pagina 5
FAN-COIL VALVES
⌬Pmax
Max. differential
operation pressure.
(noise < 38 dBA)
[bar]
⌬Ps
Close off with actuator
22C NO/NC
[bar]
Kvs
Kv by-pass
⌬Pmax
Max. differential
operation pressure.
(noise < 38 dBA)
[bar]
16
16
16
16
16
16
1,7
1,7
1,7
2,8
2,6
2,8
4,5
4,5
4,5
-
0,8
0,8
0,8
0,7
0,7
0,7
0,6
0,6
0,6
2,5
2,5
4
1,5
1,5
4
0,7
0,7
4
-
-
-
3 WAY VALVES
313112
1/2"
313112P
1/2"
313112DP
1/2"
313134
3/4"
313134P
3/4"
313134DP
3/4"
31311
1"
31311P
1"
31311DP
1"
15
15
15
20
20
20
25
25
25
15A3
15F3
15A3
20A3
20F3
20A3
25A3
25F3
25A3
16
16
16
16
16
16
16
16
16
Used as DIVERTER VALVE
Used as MIXING VALVE
1,7 1,3
0,8
2,5
1,7 1,2
0,7
2
1,7 1,3
0,8
2,5
1,7 1,2
0,7
2
1,7 1,3
0,8
4
1,7 1,2
0,7
4
2,8 1,8
0,7
1,5
2,5 1,6
0,5
1
2,8 1,8
0,7
1,5
2,5 1,6
0,5
1
2,8 1,8
0,7
4
2,5 1,6
0,5
1
4,5 3,1
0,6
0,7
4,5 3,1
0,4
0,7
4,5 3,1
0,6
0,7
4,5 3,1
0,4
0,7
4,5 3,1
0,6
4
4,5 3,1
0,4
4
15A4
15F4
15I4
15A4
20A4
20F4
20A4
20I4
16
16
16
16
16
16
16
16
1,7
1,7
1,7
1,7
2,8
2,6
2,8
2,8
16
16
3 WAY VALVES 4 PORT
413112
413112P
41311240P
413112DP
413134
413134P
413134DP
41313440P
1/2"
1/2"
1/2"
1/2"
3/4"
3/4"
3/4"
3/4"
15
15
15
15
20
20
20
20
Used as DIVERTER VALVE
1,3
1,3
1,3
1,3
1,8
1,8
1,8
1,8
0,8
0,8
0,8
0,8
0,7
0,7
0,7
0,7
2,5
2,5
2,5
4
1,5
1,5
4
1,5
⌬Ps
Close off with actuator
22C NO/NC
[bar]
Kv by-pass
15A2
15F2
15A2
20A2
20F2
20A2
25A2
25F2
25A2
Port size
15
15
15
20
20
20
25
25
25
DN mm
2 WAY VALVES
213112
1/2"
213112P
1/2"
213112DP
1/2"
213134
3/4"
213134P
3/4"
213134DP
3/4"
21311
1"
21311P
1"
21311DP
1"
DN Inches
Kvs
Max. operation pressure
PN [bar]
Pre-setting (Kv adjustable)
Hydraulic characteristics
Valve part number
69-0015-UK
-
Used as MIXING VALVE
1,7
1,7
1,7
1,7
2,5
2,5
2,5
2,5
1,2
1,2
1,2
1,2
1,6
1,6
1,6
1,6
0,7
0,7
0,7
0,7
0,5
0,5
0,5
0,5
2
2
2
4
1
1
4
1
• Red part numbers are standard versions
• KVs = nominal value of the flow in the main way of the valve in m3/h with the valve fully open at a pressure of
1 bar and with water temperature at 20 °C
• ⌬Pmax = maximum dynamic differential pressure at the ends of the fully open valve, without risk of noise
( < 38 dBA)
• ⌬Ps= maximum static differential pressure at the ends of the valve against which the valve is able to be opened
(through its internal spring for the three-way versions; through the actuator for the two-way versions)
5
69-0015-UK
23-10-2008
11:05
Pagina 6
FAN-COIL VALVES
Overall dimensions (mm)
3131
DN
D
B
D
B
C
C
2131
DN
A
A
B
29
29
29
28
28
28
30,5
30,5
30,5
C
13,5
13,5
13,5
13,5
13,5
13,5
13,5
13,5
13,5
Part number
313112
313112P
313112DP
313134
313134P
313134DP
31311
31311P
31311DP
D
51
51
51
56
56
56
77,5
77,5
77,5
DN
1/2”
1/2”
1/2”
3/4”
3/4”
3/4”
1”
1”
1”
A
52
52
52
56
56
56
82
82
82
4131
D
A
52
52
52
56
56
56
82
82
82
B C
DN
1/2”
1/2”
1/2”
3/4”
3/4”
3/4”
1”
1”
1”
E
Part number
213112
213112P
213112DP
213134
213134P
213134DP
21311
21311P
21311DP
DN
6
A
Part number
413112
413112P
413112DP
41311240P
41313440P
413134
413134P
413134DP
DN
1/2”
1/2”
1/2”
1/2”
3/4”
3/4”
3/4”
3/4”
A
52
52
52
52
56
56
56
56
B
29
29
29
29
28
28
28
28
C
13,5
13,5
13,5
13,5
13,5
13,5
13,5
13,5
D
95,5
95,5
95,5
100,5
102,5
112,5
112,5
112,5
E
35
35
35
40
40
50
50
50
B
29
29
29
28
28
28
38
38
38
C
13,5
13,5
13,5
13,5
13,5
13,5
13,5
13,5
13,5
D
68,5
68,5
68,5
69,5
69,5
69,5
92,5
92,5
92,5
23-10-2008
11:05
Pagina 7
FAN-COIL VALVES
Connections dimensions (mm)
15A2
7
45°
G 1/2
G1/2
Ø13.8 +0.1
0
Ø14.5 +0.1
0
15F2
1.5
12.7
10
10
17.2
20A2
Ø20.5
G 3/4
Ø19.5
G 3/4
45
°
20F2
1.5
12.5
14.5
18
10
25A2
25F2
°
12
21.5
Ø24
45
G1
Ø26
1.5
G1
69-0015-UK
12
21.5
69-0015-UK
23-10-2008
11:05
Pagina 8
FAN-COIL VALVES
15A3
Ø13.8 +0.1
0
1.5
Ø14.5 +0.1
0
8
15F3
G 1/2
G 1/2
45°
10
10
10
15.9
12.7
17.2
20A3
20F3
14.1
18
9.5
10
14.5
12.5
Ø19.5
45°
G 3/4
Ø20.5
G 3/4
1.5
25A3
25F3
21.5
12
21.5
12
12
Ø24
°
G1
45
12
Ø26
G1
1.5
23-10-2008
11:05
Pagina 9
FAN-COIL VALVES
15A4
15F4
Ø14.5 +0.1
0
1.5
9
G 1/2
G 1/2
Ø13.8 +0.1
0
45°
12.7
17.2
35
10
13.5
35
10
12.7
20A4
+0.1
0
15I4
G 1/2
G 3/4
Ø20.5
Ø13.8
1.5
45°
17.2
14.5
40
50
10
10
15
15
G 3/4
12.5
18
40
18
50
12.5
Ø19.5
20I4
Ø19.5
20F4
G 3/4
69-0015-UK
69-0015-UK
23-10-2008
11:05
Pagina 10
FAN-COIL VALVES
Flow rate/pressure drop charts
2131 - 3131 - 4131
DN 1/2"
Straight way Diverting + Mixing Kv 1,7
by-pass Diverting Kv 1,3
by-pass Mixing Kv 1,2
[ kPa ]
[ m bar ] [ mm c.a. ]
20
PRESSURE DROP
200
2000
100
1000
8
80
800
5
50
500
4
40
400
3
30
300
2
20
200
1
10
100
0.5
5
50
0.3
3
30
0.2
2
20
10
0.8
0.1
10
1
10
20
30
50
100
200
300
500
1000
0.05
0.1
0.2
0.3
0.5
1
2000 3000
[ l/h ]
[ m3/h ]
0.01
0.02 0.03
2
3
FLOW RATE
2131 - 3131 - 4131
DN 3/4"
Straight way Diverting Kv 2,8
Straight way Mxing Kv 2,5
by-pass Diverting Kv 1,8
by-pass Mixing Kv 1,6
[ kPa ]
[ m bar ] [ mm c.a. ]
20
200
2000
100
1000
8
80
800
5
50
500
4
40
400
3
30
300
2
20
200
1
10
100
0.5
5
50
0.3
3
30
0.2
2
20
10
PRESSURE DROP
8
0.8
10
1
0.1
10
20
30
50
100
200
300
500
1000
0.05
0.1
0.2
0.3
0.5
1
2000 3000
[ l/h ]
[ m3/h ]
0.01
0.02 0.03
FLOW RATE
2
3
23-10-2008
11:05
Pagina 11
FAN-COIL VALVES
Flow rate/pressure drop charts
2131 - 3131
DN 1"
Straight Way Diverting - Mixing Kv 4,5
by-pass Kv 3,1
[ kPa ]
PRESSURE DROP
69-0015-UK
[ m bar ] [ mm c.a. ]
20
200
2000
10
100
1000
8
80
800
5
50
500
4
40
400
3
30
300
2
20
200
1
10
100
0.5
5
50
0.3
3
30
0.2
2
20
0.8
10
1
0.1
10
20
30
50
100
200
300
500
1000
0.05
0.1
0.2
0.3
0.5
1
2000 3000
[ l/h ]
[ m3/h ]
0.01
0.02 0.03
2
3
FLOW RATE
The descriptions and photographs contained in this brochure are supplied by way of information only and are not binding.
Watts Industries reserves the right to carry out any technical and aesthetic modifications to its products without prior notice.
9
69-0015-UK
23-10-2008
11:05
Pagina 12
Product range Watts Industries
Re-order no. 69-0015-UK-IT/1-09-08-Rev.2
-
System disconnectors
Backflow protection devices
Check valves
Safety units
Safety relief valves
Pressure reducing valves
Automatic control valves
Butterfly valves
Shut off valves
Measuring gauges
-
Temperature control
Expansion vessels
Process switches
Fuel products
Gas products
Electronic controls
Installation protection products
Radiator valves
System products
Manifolds and fittings
Watts Industries Italia S.r.l.
Via Brenno, 21 - 20046 Biassono (MI), Italia
Ph. +39 039 4986.1 - Fax +39 039 4986.222
e-mail : [email protected] - www.wattsindustries.com