| Operating Guidelines: |
- 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).
|
| Applications & Markets: |
- All Industries
- Agriculture
- Construction
- Fluid Transfer Lines
|
| Materials: |
- Standard body material: Zinc-plated steel.
- Standard seal materials: Nitrile (NBR): -4°F +212°F/-20°C +100°C**
FKM (Fluorocarbon): -4°F +392°F/-20°C +200°C** also available.
|
| European Pressure Equipment Directive: |
- Check valves with nominal diameters up to and including 25 mm 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 are designed and manufactured with the stipulations of Module A of the European Pressure Equipment Directive PED 2014/68/EU. They should not be used to convey unstable gases. Our series R4000 check valves must not be used as safety devices (as per PED 2014/68/EU).
|
**For reference only, based on Danfoss recommended temperatures.
| Body Size |
Nominal Flow Diameter |
Max. Operating Pressure** |
Rated Flow* |
| Non hazardous liquids & gases in Group 2 |
Hazardous liquids & gases in Group 1 |
| bar |
psi |
bar |
psi |
L/min |
gpm |
| 1/8″ |
3.8mm |
700 bar |
10,150 psi |
700 bar |
10,150 psi |
4.5 L/min |
1.19 gpm |
| 1/4″ |
5.7mm |
700 bar |
10,150 psi |
700 bar |
10,150 psi |
14.2 L/min |
3.75 gpm |
| 3/8″ |
7.6mm |
700 bar |
10,150 psi |
700 bar |
10,150 psi |
22 L/min |
5.81 gpm |
| 1/2″ |
10.3mm |
500 bar |
7,250 psi |
500 bar |
7,250 psi |
32 L/min |
8.45 gpm |
| 3/4″ |
14.2mm |
500 bar |
7,250 psi |
500 bar |
7,250 psi |
72 L/min |
19 gpm |
| 1″ |
16.5mm |
500 bar |
7,250 psi |
500 bar |
7,250 psi |
117 L/min |
30.9 gpm |
| 1-1/4″ |
20.5mm |
300 bar |
4,350 psi |
300 bar |
4,350 psi |
188 L/min |
49.66 gpm |
| 1-1/2″ |
25.8mm |
300 bar |
4,350 psi |
38 bar |
550 psi |
232 L/min |
61.29 gpm |
| 2″ |
34.7mm |
300 bar |
4,350 psi |
28 bar |
405 psi |
393 L/min |
103.81 gpm |
*Indicated values refer to a 1 bar/14.5 psi pressure drop.
**Group 1 = Hazardous media / Group 2 = Other media
|
| Cracking Pressure 0.5 bar (7.25 psi) |
| Part Number |
Size |
Thread NPTF |
Dimensions |
Rated Pressure |
| NBR |
FKM |
A |
Hex |
psi |
bar |
| RA0421000 |
– |
1/4″ |
1/4-18 Female NPTF |
1.97″ |
0.75″ |
10,150 psi |
700 bar |
| RA0422000 |
– |
3/8″ |
3/8-18″ Female NPTF |
2.36″ |
0.91″ |
10,150 psi |
700 bar |
| RA0423000 |
– |
1/2″ |
1/2-14 Female NPTF |
2.76″ |
1.06″ |
7,250 psi |
500 bar |
| RA0424000 |
– |
3/4″ |
3/4-14 Female NPTF |
3.39″ |
1.38″ |
7,250 psi |
500 bar |
| RA0425000 |
– |
1″ |
1-11-1/2 Female NPTF |
3.94″ |
1.62″ |
7,250 psi |
500 bar |
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