RA0421000 Hansen® by Danfoss | Quick Disconnect Check Valve | R4000 Series | 1/4" Female NPTF x 1/4" Body Size | Cracking Pressure: 0.5 bar (7.25 psi) | NBR Seal | Steel
RA0421000 Hansen® by Danfoss | Quick Disconnect Check Valve | R4000 Series | 1/4" Female NPTF x 1/4" Body Size | Cracking Pressure: 0.5 bar (7.25 psi) | NBR Seal | Steel
RA0421000 Hansen® by Danfoss | Quick Disconnect Check Valve | R4000 Series | 1/4" Female NPTF x 1/4" Body Size | Cracking Pressure: 0.5 bar (7.25 psi) | NBR Seal | Steel
RA0421000 Hansen® by Danfoss | Quick Disconnect Check Valve | R4000 Series | 1/4" Female NPTF x 1/4" Body Size | Cracking Pressure: 0.5 bar (7.25 psi) | NBR Seal | Steel

RA0421000 Hansen® by Danfoss | Quick Disconnect Check Valve | R4000 Series | 1/4" Female NPTF x 1/4" Body Size | Cracking Pressure: 0.5 bar (7.25 psi) | NBR Seal | Steel

Sale price$41.64

Hansen® by Danfoss
R4000 Series | Check Valve

The Danfoss Hansen R4000 Series steel check valves are designed for multipurpose hydraulic applications 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).


In stock
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Quantity Price Each
10–39 $39.14
40–79 $35.39
80+ $31.23
Discounts applied in cart/checkout.

Product Data:

Brand:
  • Hansen
Series:
  • R4000 Series
Shape:

Straight
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
- RA04290V0 2" 2-11-1/2 Female NPTF 5.91" 2.95" 4,350 psi 300 bar

Danfoss (Eaton - Aeroquip)

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