Hansen 3RL Series
Danfoss Hansen 3RL ring-lock pneumatic quick disconnect couplings combine high flow capacity with push-to-connect operation and a rotating safety sleeve for compressed-air systems.
Series Overview
High-flow 3/8-inch ring-lock coupling
The Hansen 3RL Series uses a proprietary Danfoss interchange for compressed air. Its ring-lock sleeve helps prevent accidental disconnection while retaining simple push-to-connect operation.
To disconnect, rotate the sleeve approximately 20 degrees before retracting it. The 3RL is suited to shipyards, general pneumatics, mining and marine applications.
Product Features
Product features
- High-flow 3/8-inch coupling platform.
- Push-to-connect operation with ring-lock sleeve.
- Ring-lock design helps prevent accidental disconnection.
- Rotate the sleeve approximately 20 degrees to disconnect.
- Standard body material: zinc trivalent plated steel.
- Standard seal material: Buna-N.
Physical Characteristics
3RL Series operating data
| Series | Coupling Size | Max. Pressure (bar) | Max. Pressure (psi) | Min. Burst (bar) | Min. Burst (psi) | Rated Flow (lpm) | Rated Flow (scfm) |
|---|---|---|---|---|---|---|---|
| 3RL | 3/8 | 20 | 300 | 80 | 1,200 | 2,250 | 80 |
Applications
Typical uses
- Shipyards
- General pneumatics
- Mining
- Marine
Operation
Connection style
- Push plug into socket to connect.
- Rotate sleeve about 20 degrees, then retract to disconnect.
- Ring lock reduces accidental release.
Part Numbers
3RL Series connection tables
Choose a connection family to review standard published 3RL parts and dimensions.
Socket male end connections
| Part Number | Type | Body Size | Port Size | Thread | Seal | Length (in) | Diameter (in) | Hex (in) |
|---|---|---|---|---|---|---|---|---|
| 3R15 | Socket/Female | 3/8 | 1/4 | 1/4-18 NPTF | NBR | 2.34 | 1.31 | 1.00 |
| 3R20 | Socket/Female | 3/8 | 3/8 | 3/8-18 NPTF | NBR | 2.35 | 1.31 | 1.00 |
| 3R20192 | Socket/Female | 3/8 | 3/8 | 3/8-18 NPTF | EPDM | 2.35 | 1.31 | 1.00 |
| 3R25 | Socket/Female | 3/8 | 1/2 | 1/2-14 NPTF | NBR | 2.54 | 1.31 | 1.00 |
| 3R30 | Socket/Female | 3/8 | 3/4 | 3/4-14 NPTF | NBR | 2.54 | 1.31 | 1.06 |
Socket female end connections
| Part Number | Type | Body Size | Port Size | Thread | Seal | Length (in) | Diameter (in) | Hex (in) |
|---|---|---|---|---|---|---|---|---|
| 3R16 | Socket/Female | 3/8 | 1/4 | 1/4-18 NPTF | NBR | 2.29 | 1.31 | 1.00 |
| 3R21 | Socket/Female | 3/8 | 3/8 | 3/8-18 NPTF | NBR | 2.35 | 1.31 | 1.00 |
| 3R26 | Socket/Female | 3/8 | 1/2 | 1/2-14 NPTF | NBR | 2.63 | 1.31 | 1.00 |
| 3R31A | Socket/Female | 3/8 | 3/4 | 3/4-14 NPTF | NBR | 2.66 | 1.31 | 1.19 |
Plug male end connections
| Part Number | Type | Body Size | Port Size | Thread | Length (in) | Diameter (in) | Hex (in) |
|---|---|---|---|---|---|---|---|
| 3L10 | Plug/Male | 3/8 | 1/8 | 1/8-27 NPTF | 1.54 | 0.72 | 0.63 |
| 3L15 | Plug/Male | 3/8 | 1/4 | 1/4-18 NPTF | 1.70 | 0.72 | 0.63 |
| 3L20 | Plug/Male | 3/8 | 3/8 | 3/8-18 NPTF | 1.76 | 0.79 | 0.69 |
| 3L25 | Plug/Male | 3/8 | 1/2 | 1/2-14 NPTF | 2.31 | 1.01 | 0.88 |
| 3L30 | Plug/Male | 3/8 | 3/4 | 3/4-14 NPTF | 2.38 | 1.23 | 1.06 |
| 3L15G† | Plug/Male | 3/8 | 1/4 | 1/4-18 NPTF | – | – | – |
| 3L20G† | Plug/Male | 3/8 | 3/8 | 3/8-18 NPTF | – | – | – |
| 3L25G† | Plug/Male | 3/8 | 1/2 | 1/2-14 NPTF | – | – | – |
| 3L30G† | Plug/Male | 3/8 | 3/4 | 3/4-14 NPTF | – | – | – |
† With Bleeder Ball Check—Reduces Hose Whip
Plug female end connections
| Part Number | Type | Body Size | Port Size | Thread | Length (in) | Diameter (in) | Hex (in) |
|---|---|---|---|---|---|---|---|
| 3L16 | Plug/Male | 3/8 | 1/4 | 1/4-18 NPTF | 1.48 | 0.79 | 0.69 |
| 3L21 | Plug/Male | 3/8 | 3/8 | 3/8-18 NPTF | 1.63 | 0.94 | 0.81 |
| 3L26 | Plug/Male | 3/8 | 1/2 | 1/2-14 NPTF | 2.25 | 1.15 | 1.00 |
| 3L31 | Plug/Male | 3/8 | 3/4 | 3/4-14 NPTF | 2.25 | 1.37 | 1.19 |
| 3L16G† | Plug/Male | 3/8 | 1/4 | 1/4-18 NPTF | – | – | – |
| 3L21G† | Plug/Male | 3/8 | 3/8 | 3/8-18 NPTF | – | – | – |
| 3L26G† | Plug/Male | 3/8 | 1/2 | 1/2-14 NPTF | – | – | – |
† With Bleeder Ball Check—Reduces Hose Whip
Socket hose stem connections
Plug hose stem connections
| Part Number | Type | Body Size | Hose I.D. | Length (in) | Diameter (in) |
|---|---|---|---|---|---|
| 3L17 | Plug/Male | 3/8 | 1/4 | 2.16 | 0.63 |
| 3L195 | Plug/Male | 3/8 | 5/16 | 2.16 | 0.63 |
| 3L22 | Plug/Male | 3/8 | 3/8 | 2.16 | 0.75 |
| 3L27 | Plug/Male | 3/8 | 1/2 | 2.16 | 0.81 |
| 3L32 | Plug/Male | 3/8 | 3/4 | 3.13 | 1.00 |
| 3L195G† | Plug/Male | 3/8 | 5/16 | – | – |
| 3L22G† | Plug/Male | 3/8 | 3/8 | – | – |
| 3L27G† | Plug/Male | 3/8 | 1/2 | – | – |
| 3L32G† | Plug/Male | 3/8 | 3/4 | – | – |
† With Bleeder Ball Check—Reduces Hose Whip
Socket hose clamp connections
| Part Number | Body Size | Hose I.D. | Hose O.D. | Seal | Length (in) | Diameter (in) | Hex (in) |
|---|---|---|---|---|---|---|---|
| 3R23D7 | 3/8 | 3/8 | 5/8 | NBR | 3.06 | 1.31 | 0.75 |
| 3R23D9 | 3/8 | 3/8 | 11/16 | NBR | 3.06 | 1.31 | 0.81 |
| 3R23D11 | 3/8 | 3/8 | 3/4 | NBR | 3.06 | 1.31 | 0.88 |
| 3R28P13 | 3/8 | 1/2 | 13/16 | NBR | 3.66 | 1.31 | 0.94 |
| 3R28P15 | 3/8 | 1/2 | 7/8 | NBR | 3.66 | 1.31 | 1.00 |
| 3R28P17 | 3/8 | 1/2 | 15/16 | NBR | 3.66 | 1.31 | 1.06 |
| 3R33R23 | 3/8 | 3/4 | 1 1/8 | NBR | 3.79 | 1.31 | 1.25 |
| 3R33R25 | 3/8 | 3/4 | 1 3/16 | NBR | 3.79 | 1.31 | 1.31 |
Plug hose clamp connections
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