



ML10FFP37143 Hansen® by Danfoss | Quick Disconnect Coupling | MLFF Series | 3/8" Female NPT x 3/8" ISO 16028 Flat Face/Dry Break | Plug | FKM Seal | 316L Stainless Steel
Hansen® by Danfoss
MLFF Series | Flat Face/Dry Break ISO 16028 Interchange
Fluid Transfer and Hydraulic Quick Disconnect Coupling
Danfoss Hansen MLFF Series stainless steel coupling is a flat face dry break coupling used for hydraulic applications.
The MLFF Series interchanges with all ISO 16028 profiles. Due to its stainless steel design, it is corrosion resistant and can handle aggressive environments.
| Buy More, Save More! | |
| Quantity | Price Each |
| 5–19 | $95.39 |
| 20–59 | $86.26 |
| 60+ | $76.11 |
Product Data:
Straight
| Product Features: |
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| Applications & Markets: |
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| Materials: |
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| European Pressure Equipment Directive: |
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| ISO Size* |
Coupling Size |
Max. Operating Pressure | Min. Burst Pressure | Rated Flow** |
Fluid Loss |
Air Inclusion |
Force to Connect |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Connected*** | Plug (Male Half) |
Socket (Female Half) |
Connected | Plug (Male Half) |
Socket (Female Half) |
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| 6.3mm | 1/4" | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 2,335 bar | 33,858 psi | 1,640 bar | 23,780 psi | 1,330 bar | 19,285 psi | 17 lpm | 4.49 gpm | 0.004 ml-cc | 0.007 ml-cc | 80 N | 18.0 lbs |
| 10mm | 3/8" | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 1,672 bar | 24,244 psi | 1,664 bar | 24,128 psi | 845 bar | 12,253 psi | 29 lpm | 7.66 gpm | 0.006 ml-cc | 0.010 ml-cc | 140 N | 31.5 lbs |
| 12mm | 1/2" | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 1,679 bar | 24,346 psi | 997 bar | 14,457 psi | 993 bar | 14,399 psi | 55 lpm | 14.53 gpm | 0.012 ml-cc | 0.013 ml-cc | 195 N | 43.8 lbs |
| 16mm | 5/8" | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 1,190 bar | 17,255 psi | 950 bar | 13,775 psi | 880 bar | 12,760 psi | 67 lpm | 17.70 gpm | 0.016 ml-cc | 0.030 ml-cc | 205 N | 46.1 lbs |
| 19mm | 3/4" | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 1,370 bar | 19,865 psi | 882 bar | 12,789 psi | 845 bar | 12,253 psi | 105 lpm | 27.74 gpm | 0.034 ml-cc | 0.015 ml-cc | 215 N | 48.3 lbs |
| 25mm | 1" | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 1,690 bar | 24,505 psi | 1,000 bar | 14,500 psi | 850 bar | 12,325 psi | 177 lpm | 46.76 gpm | 0.032 ml-cc | 0.033 ml-cc | 260 N | 58.5 lbs |
| - | 1-1/2" | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 250 bar | 3,625 psi | 750 bar | 10,875 psi | 750 bar | 10,875 psi | 750 bar | 10,875 psi | 450 lpm | 118.9 gpm | 0.265 ml-cc | 0.445 ml-cc | 385 N | 86.6 lbs |
| - | 2" | 175 bar | 2,535 psi | 175 bar | 2,535 psi | 175 bar | 2,535 psi | 525 bar | 7,610 psi | 525 bar | 7,610 psi | 525 bar | 7,610 psi | 700 lpm | 184.9 gpm | 0.390 ml-cc | 0.260 ml-cc | 375 N | 84.3 lbs |
* The ISO size corresponds to the internal diameter of the hose or the external diameter of the rigid tube (as defined in ISO 4397 Standard)
** Indicated values refer to a 1 bar/14.5 psi pressure drop
| Maximum Operating Pressure | |||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Non hazardous Liquids Group 2 | Non hazardous Liquids Group 2 | Hazardous Liquids Group 1 | |||||||||||||||||||||||||||||||||||||||||
| Coupling Size |
Nominal Flow Diameter |
Plug & Connected |
Socket | Plug & Connected |
Socket | Plug & Connected |
Socket | ||||||||||||||||||||||||||||||||||||
| 1-1/2" | 30.1 | 300 bar | 4350 psi | 270 bar | 3915 psi | 300 bar | 4350 psi | 270 bar | 3915 psi | 66 bar | 955 psi | 66 bar | 955 psi | ||||||||||||||||||||||||||||||
| 2 | 39.2 | 300 bar | 4350 psi | 225 bar | 3260 psi | 25 bar | 360 psi | 25 bar | 360 psi | 50 bar | 725 psi | 50 bar | 725 psi | ||||||||||||||||||||||||||||||
*Nominal diameters over 25mm should not be used to convey gases in group 1 (PED 2014/68/EU)
| Seal Elastomer Data* | |||
|---|---|---|---|
| Seal Elastomer | P/N Code | ISO Size (6FF to 25FF) Maximum Operation Temperature Range | Non-ISO Size (40FF and 50FF) Maximum Operation Temperature Range |
| NBR (Nitrile) + AU (Polyurethane) | - | -25°C +100°C/-13°F +212°F | on request |
| FKM | -143 | -20°C +200°C/-4°F +392°F | -20°C +200°C/-4°F +392°F |
* For reference only, based on Danfoss recommended temperatures.
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Socket/Female (Figure 1) |
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| MLFF Series | Sockets | |||||||||||
| 316 Stainless Steel Part Number |
316 Stainless Steel Part Number |
Body Size | ISO Size | Nominal Flow Diameter | Type | Thread | Figure | Dimensions | |||
| NBR+AU Seal | FKM Seal | A | B | C | Hex | ||||||
| - | ML6FFS25143 | 1/4" | 6.3mm | 6mm | Socket/Female | 1/4-18 Female NPT | 1 | 2.13" (54mm) |
1.06" (27mm) |
0.94" (24mm) |
0.87" (22mm) |
| ML10FFS37 | ML10FFS37143 | 3/8" | 10mm | 8.6mm | Socket/Female | 3/8-18 Female NPT | 1 | 2.68" (68mm) |
1.26" (32mm) |
1.16" (29.5mm) |
1.06" (27mm) |
| ML12FFS50 | ML12FFS50143 | 1/2" | 12.5mm | 11mm | Socket/Female | 1/2-14 Female NPT | 1 | 3.27" (83mm) |
1.50" (38mm) |
1.56" (39.5mm) |
1.42" (36mm) |
| - | ML16FFS75143 | 5/8" | 16mm | 13mm | Socket/Female | 3/4-14 Female NPT | 1 | 3.39" (86mm) |
1.66" (42mm) |
1.56" (39.5mm) |
1.42" (36mm) |
| ML19FFS75 | ML19FFS75143 | 3/4" | 19mm | 15mm | Socket/Female | 3/4-14 Female NPT | 1 | 3.82" (97mm) |
1.81" (46mm) |
1.77" (45mm) |
1.61" (41mm) |
| - | ML19FFS100143 | 3/4" | 19mm | 15mm | Socket/Female | 1-11.5 Female NPT | 1 | 3.80" (97mm) |
1.82" (46mm) |
1.77" (45mm) |
1.61" (41mm) |
| ML25FFS125 | ML25FFS125143 | 1" | 25mm | 18mm | Socket/Female | 1-1/4-11.5 Female NPT | 1 | 4.07" (104mm) |
2.36" (60mm) |
2.36" (60mm) |
2.17" (55mm) |
| - | ML40FFS150143 | 1-1/2" | - | 30.1mm | Socket/Female | 1-1/2-11.5 Female NPT | 1 | 5.01" (127.4mm) |
3.13" (79.5mm) |
2.76" (70mm) |
2.56" (65mm) |
| - | ML50FFS200143 | 2" | - | 39.2mm | Socket/Female | 2-11.5 Female NPT | 1 | 6.17" (156.8mm) |
3.84" (97.5mm) |
3.46" (87.8mm) |
3.15" (80mm) |
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Plug/Male (Figure 2) |
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| MLFF Series | Plugs | ||||||||||||
| 316 Stainless Steel Part Number |
316 Stainless Steel Part Number |
Body Size | ISO Size | Nominal Flow Diameter | Type | Thread | Figure | Dimensions | ||||
| NBR+AU Seal | FKM Seal | D | E | F | G | Hex | ||||||
| - | ML6FFP25143 | 1/4" | 6.3mm | 6mm | Plug/Male | 1/4-18 Female NPT | 2 | 2.01" (51mm) |
0.46" (11.6mm) |
0.94" (24mm) |
1.58" (40.1mm) |
0.87" (22mm) |
| ML10FFP37 | ML10FFP37143 | 3/8" | 10mm | 8.6mm | Plug/Male | 3/8-18 Female NPT | 2 | 2.56" (65mm) |
0.78" (19.7mm) |
1.16" (29.5mm) |
1.97" (50mm) |
1.06" (27mm) |
| ML12FFP50 | ML12FFP50143 | 1/2" | 12.5mm | 11mm | Plug/Male | 1/2-14 Female NPT | 2 | 2.72" (69mm) |
0.96" (24.5mm) |
1.56" (39.5mm) |
2.05" (52mm) |
1.42" (36mm) |
| - | ML16FFP75143 | 5/8" | 16mm | 13mm | Plug/Male | 3/4-14 Female NPT | 2 | 2.83" (72mm) |
1.06" (27mm) |
1.56" (39.5mm) |
1.42" (36mm) |
1.42" (36mm) |
| ML19FFP75 | ML19FFP75143 | 3/4" | 19mm | 15mm | Plug/Male | 3/4-14 Female NPT | 2 | 3.70" (94mm) |
1.18" (29.9mm) |
1.77" (45mm) |
2.83" (72mm) |
1.61" (41mm) |
| - | ML19FFP100143 | 3/4" | 19mm | 15mm | Plug/Male | 1-11.5 Female NPT | 2 | 3.70" (94mm) |
1.18" (29.9mm) |
1.77" (45mm) |
2.83" (72mm) |
1.61" (41mm) |
| ML25FFP125 | ML25FFP125143 | 1" | 25mm | 18mm | Plug/Male | 1-1/4-11.5 Female NPT | 2 | 4.12" (104.6mm) |
1.42" (36mm) |
2.36" (60mm) |
2.17" (55mm) |
2.17" (55mm) |
| - | ML40FFP150143 | 1-1/2 " | - | 30.1mm | Plug/Male | 1-1/2-11,5 Female NPT | 2 | 4.13" (105mm) |
2.24" (57mm) |
2.61" (66.3mm) |
3.01" (76.5mm) |
2.36" (60mm) |
| - | ML50FFP200143 | 2" | - | 39.2mm | Plug/Male | 2-11.5 Female NPT | 2 | 5.31" (135mm) |
2.87" (73mm) |
3.29" (83.5mm) |
3.80" (96.6mm) |
2.95" (75mm) |



