Check valves CALEFFI

00 01005
Replaces 01005/94
GB
Series 3041
3045
3046
3047
3048
3049
Check valves for
protecting drinking
water against the
return of contaminated
backflow which does
constitute any toxic
or microbiological
danger to human
health
Qualification
certificate for the
NF Class A
Anti-Pollution Mark
Acoustic characteristics
comply with Group 1
of ISO standards 3822
Check mechanism
with press fit seal
suitable for high
and low pressures
ANTIPOLLUTION
ISO 9001
Quality Assured Firm
CALEFFI
Antipollution Division
Check valves

Class A Check valve
3045
Check valve with Female-Female
connections. Available in sizes 1/2”,
3/4”, 1”, 1 1/4”, 1 1/2” and 2”.
Controllable.
3046
Check valve with loose nut-Male
connections (3/4” x 3/4”, 1” x 1”,
1 1/4” x 1 1/4”, 1 1/2” x 1 1/2” and
2” x 2”).
Controllable.
3047
Check valve with Female-Female
connections. Available in sizes 1/2”,
3/4” and 1”.
Not controllable.
3048
Double check valve with
Female-Female connections.
Available in sizes 1/2” and 3/4”.
Controllable.
3041
Ball valve with 1/2” incorporated check
mechanism with loose nut-Male
connections (3/4” x 3/4”).
Controllable.
For use downstream from water
meters.
General data
- Maximum operating pressure: 10 bar
- Maximum operating temperature: 90°C
- Opening pressure: 100 mm w.g.
- Complies with French Standard NF P 43 007
- Qualification certificate for Class A NF Anti-Pollution Mark
- Acoustic characteristics to Group 1 of ISO standards 3822
- Operating media: water, compressed air, gas
Construction
- UNI EN 12165 CW617N brass body
- Check mechanism made of POM acetal resin
- Seals made of NBR nitrile rubber (WRC-KTW approved for
drinking water)
- Spring made of AISI 302 stainless steel
- 1/4” test ports.
Sealing system
The lip seal also ensures effective
sealing without back pressure.
In the case of considerable back
pressure the obturator shapes the
seal and rests on the shoulder.
This arrangement ensures the
system has a long service life.
Installation
An isolation cock is fitted upstream of the valve to enable control of
the check valve. To test the efficiency of the check valve the shutoff
is closed and the upstream plug A is unscrewed.
Versions with loose nut
These valves are suitable for
downstream installation of the
water meter. The loose nut is
fitted directly on to the body of
the meter.
The downstream plug B is used for
draining the system (NF P 43 007).
NF
AAA
CALEFFI
A B

Dimensions
Pressure loss
1/2”
.1
.2
.5
1
2
5
10
.12
.14
.16
.18
.25
.3
.35
.4
.45
.6
.7
.8
.9
1.2
1.4
1.6
1.8
2.5
3
3.5
4 4.5
6
7
8
9
NF
A
CALEFFI
G (m 3 /h)
∆p (m water column)
.5
1
2
5
10
.2
.1 .12
.14
.16
.18
.4
.3
.6
.7
.8
.9
1.2
1.4
1.6
1.8
4
3
6
7
8
9
.35
.25
.45
3.5
2.5
4.5
1/2”
.1
.2
.5
1
2
5
10
.12
.14
.16
.18
.25
.3
.35
.4
.45
.6
.7
.8
.9
1.2
1.4
1.6
1.8
2.5
3
3.5
4 4.5
6
7
8
9
G (m 3 /h)
∆p (m water column)
.5
1
2
5
10
.2
.1 .12
.14
.16
.18
.4
.3
.6
.7
.8
.9
1.2
1.4
1.6
1.8
4
3
6
7
8
9
.35
.25
.45
3.5
2.5
4.5
3/4”
NF
A
CALEFFI
AA
CODE
DN
A
B
304740
1/2”
1/2”
68
304750
3/4”
3/4”
78
304760
1”
1”
90
CODE
DN
A
B
C
D
304540
1/2”
1/2”
32
27
68
304550
3/4”
3/4”
32
27,5
78
304560
1”
1”
32
32,5
90
304570
1 1/4”
1 1/4”
32
36
110
304580
1 1/2”
1 1/2”
40
41,5
120
304590
2”
2”
50
48
150
A
D
C
A
B
NF
A
CALEFFI
AA
∆p (m water column)
.5
1
2
5
10
.2
.1
NF
A
CALEFFI
AA
N
CALEFFI
F
A
1/2”
3/4”
1”
1 1/4”
1 1/2”
2”
.1
.2
.5
1
2
5
10
20
50
100
.12
.14
.16
.18
.25
.3
.35
.4
.45
.6
.7
.8
.9
1.2
1.4
1.6
1.8
2.5
3
3.5
4 4.5
6
7
8
9
12
14
16
18
25
30
35
40
45
60
70
80
90
.12
.14
.16
.18
.4
.3
.6
.7
.8
.9
1.2
1.4
1.6
1.8
4
3
6
7
8
9
.35
.25
.45
3.5
2.5
4.5
G (m 3 /h)
N
CALEFFI
F
A
CALEFFI
B
A
A
A
E
C
A
D
B
CALEFFI
CODE
DN
A
B
C
D
E
304140
1/2”
3/4”
32
50,5
30
88
A
B
C
A
NF
A
CALEFFI
AA
CODE
DN
A
B
C
304850
3/4”
3/4”
78
27,5
304840
1/2”
1/2”
71
25,5
D
A
A
C
B
N
CALEFFI
F
A
CODE
DN
A
B
C
D
304640
1/2”
3/4”
32
24
78
304650
3/4”
1”
32
27,5
81
304660
1”
1 1/4”
32
32
128
304670
1 1/4”
1 1/2”
32
36
153,5
304680
1 1/2”
2 ”
40
41,5
168

Class A flanged check valves
3049
Check valve with flanged connections from DN 50 to DN 200.
Controllable.
With epoxy coating.
General data
- Maximum operating pressure: 16 bar
- Maximum operating temperature: 65 oC - Complies with French standard NF P 43 017
- Qualification certificate for the Class A NF Anti-Pollution mark
- Operating fluids: drinking water
- PN 10/16 flanges
Dimensions
A
CODE 304905 304906 304908 304910 304912 304915 304920
DN 50 65 80 100 125 150 200
A 230 290 310 350 400 480 600
B 135 150 160 185 225 265 -
Weight 9 12,5 16 20 32 47 -
DN
B
Construction
- Body and cover made of cast iron with 150 micron
epoxy coating
- Check valve and seat made of bronze
- Rod and spring made of stainless steel
- Seals made of EPDM rubber
The unit can be inspected. By dismantling the top cover the
complete closing mechanism which is integral with the cover
itself can be removed.
The bronze seal seat can also be replaced.
All these maintenance and inspection operations can be
carried out on site without having to remove the unit from
the installation.
Table of flow rates (m 3 /h)
Minimum flow rates shown with a pressure loss of 1.5 m
water pressure
CALEFFI S.P.A. I - 28010 FONTANETO D'AGOGNA (NO) S.S.229 TEL.INT. +39 0322 8491 R.A. FAX +39 0322 863723
· http://www.caleffi.com · e-mail: info@caleffi.it ·
DN
Q
50
19,8
65
41,8
Pressure losses
∆p (m water column)
3
2
1
0
2.5
1.5
.5
0
.5
80
63
100
99
DN 50 ÷ DN 200
* Average speed on an entry section
125
154,8
150
223,2
200
396
1.5 2.5 3.5 4.5
1 2 3 4 5
V (m/s) *