Quick Disconnect Couplings - Flipbook - Seite 119
Check valves
Product Features
Operating Guidelines
• Standard body material: Nickelplated brass
• Standard seal material: NBR,
FKM, EPDM
The Danfoss R4000 series is designed to handle
liquids. Should applications involving gases (but
not unstable gases) be considered, the user
should certify that sonic frequencies will not
exceed 1 Hz (one cycle per second). For further
information, please contact Danfoss technical
support.
Global region
The Danfoss Gromelle R4000 Series brass check-valves
are designed to either allow flow of fluid in one direction
only or limit the line’s internal pressure to the cracking
pressure. Standard cracking pressures are 0.5 and 1 bar
(7.25 and 14.5 psi). Alternatives can be offered upon
request. It is designed to handle liquids in all industries
and for fluid transfer lines.
R4000 Series
(Brass)
Physical Characteristics
Body
Size
Nominal Flow
Diameter
Non hazardous
liquids
(in)
(mm)
bar
Max. Operating Pressure**
Hazardous
liquids & Non-Harzardous Gases
(psi)
bar
Rated
Flow*
(psi)
L/min
(gpm)
3.8
400
5,800
400
5,800
4.5
1.19
¼
5.7
400
5,800
400
5,800
14.2
3.75
7.6
400
5,800
400
5,800
22
5.81
½
10.3
250
3,625
250
3,625
32
8.45
¾
14.2
250
3,625
250
3,625
72
1
16.5
250
3,625
250
3,625
117
19
30.9
1¼
20.5
150
2,175
150
2,175
188
49.66
1½
25.8
150
2,175
75
1,085
232
61.29
2
34.7
100
1,450
25
360
393
103.81
*Indicated values refer to a 1 bar/14.5 psi pressure drop.
**Group 1 = Hazardous media / Group 2 = Other media
Flow Data
European Pressure Equipment Directive
Flow rate (l/min)
10
100
1000
5
4
/2
3
2"
1-1
1-1
1"
3/4
3/8
1/2
1/4
1/8
/4
43.5
29
2
14.5
1
7.25
0.5
4.35
0.3
2.9
0.2
1.45
Pressure drop (bar)
1
72.5
58
Pressure drop (PSI)
All check valves are designed and manufactured under Article 4.3 of the European
Pressure Equipment Directive PED 2014/68/
EU. Check valves with nominal diameters
greater than 25 mm should not be used
to convey gases in Group 1 (hazardous).
Working pressures for liquids of Group 1
(hazardous) and gases of Group 2 (non-hazardous) are reduced. Please refer to “Physical
Characteristics” table. Our series R4000
check valves must not be used as safety
devices (as per PED 2014/68/EU).
0.1
0.264
2.64
26.4
264
Flow rate (gpm)
Applicable to valves with 0.5 bar (7.25 psi) cracking pressure
Applications & Markets
• All Industries
• Agriculture
• Construction
• Fluid Transfer Lines
Seal Elastomer Data*
Seal Elastomer
Max. Operation Temperature Range
NBR (Nitrile)
FKM (Fluorocarbon)
EPDM (Ethylene-Propylene)**
-20°C +100°C/-4°F +212°F
-20°C +200°C/-4°F +392°F
-40°C +150°C/-40°F +302°F
*For reference only, based on Danfoss recommended temperatures.
**In accordance with NF L 17-241 or NAS 1613 rev. 5
Contact Danfoss technical support for further information on fluid compatibility.
Danfoss Quick Disconnect Couplings Master Catalog
AF435258198969en-000102
119
