Skip to content
Login for the best B2B Wholesale Experience.
Login for the best B2B Wholesale Experience.
3R31A Hansen® by Danfoss | Pneumatic Quick Disconnect Coupling | 3RL Series | 3/4" Female NPTF x 3/8" Body Size | Socket | Buna-N Seal | Steel
3R31A Hansen® by Danfoss | Pneumatic Quick Disconnect Coupling | 3RL Series | 3/4" Female NPTF x 3/8" Body Size | Socket | Buna-N Seal | Steel
3R31A Hansen® by Danfoss | Pneumatic Quick Disconnect Coupling | 3RL Series | 3/4" Female NPTF x 3/8" Body Size | Socket | Buna-N Seal | Steel
3R31A Hansen® by Danfoss | Pneumatic Quick Disconnect Coupling | 3RL Series | 3/4" Female NPTF x 3/8" Body Size | Socket | Buna-N Seal | Steel

3R31A Hansen® by Danfoss | Pneumatic Quick Disconnect Coupling | 3RL Series | 3/4" Female NPTF x 3/8" Body Size | Socket | Buna-N Seal | Steel

$44.38 - $44.38
$44.38
$44.38 - $44.38
$44.38

Hansen® by Danfoss
Pneumatic Quick Disconnect Coupling | 3RL Series

Quick Disconnect for Pneumatic Applications.

Danfoss' 2RL/3RL ring lock series quick disconnect pneumatic couplings have a unique interchange which Danfoss designed for use with compressed air.
Specifications for Variant SKU: 3R31A Danfoss
Brand: Hansen
Series: 3RL Series
Shape (Orientation): Straight
Material(s): Steel
Seal Material(s): Buna-N/Nitrile Rubber
Features:
  • High Flow capacity.
  • Push to connect with a ring lock sleeve.
  • Ring lock design prevents accidental disconnection.
  • To disconnect rotate sleeve 20 degrees.
Applications & Markets:
  • Shipyards
  • General Pneumatics
  • Mining
  • Marine
Materials:
  • Standard body material: Trivalent Plated Steel
  • Standard seal material: Buna-N
Series Coupling Size Max. Operating Pressure Min. Burst Pressure Rated Flow
2RL 1/4" 20 bar 300 psi 80 bar 1,200 psi 1,350 lpm 48 scfm
3RL 3/8" 20 bar 300 psi 80 bar 1,200 psi 2,250 lpm 80 scfm
Socket/Female
(Figure 1)
Plug/Male
(Figure 2)
3RL Series | Socket
Part Number Coupling Type Body Size Port Size Thread Figure Dimensions
A B Hex
3R16 Socket/Female 3/8" 1/4" 1/4-18 Female NPTF 1 2.29"
(58.2mm)		 1.31"
(33.3mm)		 1.00"
(25.4mm)
3R21 Socket/Female 3/8" 3/8" 3/8-18 Female NPTF 1 2.35"
(59.7mm)		 1.31"
(33.3mm)		 1.00"
(25.4mm)
3R26 Socket/Female 3/8" 1/2" 1/2-14 Female NPTF 1 2.63"
(66.8mm)		 1.31"
(33.3mm)		 1.00"
(25.4mm)
3R31A Socket/Female 3/8" 3/4" 3/4-14 Female NPTF 1 2.66"
(67.6mm)		 1.31"
(33.3mm)		 1.19"
(30.2mm)
3RL Series | Plugs
Part Number Coupling Type Body Size Port Size Thread Figure Dimensions
A B Hex
3L16 Plug/Male 3/8" 1/4" 1/4-18 Female NPTF 2 1.48"
(37.6mm)		 0.79"
(20.1mm)		 0.69"
(17.5mm)
3L16G Plug/Male 3/8" 1/4" 1/4-18 Female NPTF 2 2.39"
(60.7mm)		 0.98"
(24.9mm)		 0.88"
(22.4mm)
3L21 Plug/Male 3/8" 3/8" 3/8-18 Female NPTF 2 1.63"
(41.4mm)		 0.94"
(23.9mm)		 0.81"
(20.6mm)
3L26 Plug/Male 3/8" 1/2" 1/2-14 Female NPTF 2 2.25"
(57.2mm)		 1.15"
(29.2mm)		 1.00"
(25.4mm)
3L26G Plug/Male 3/8" 1/2" 1/2-14 Female NPTF 2 2.91"
(73.9mm)		 0.98"
(24.9mm)		 1.00"
(25.4mm)
3L31 Plug/Male 3/8" 3/4" 3/4-14 Female NPTF 2 2.25"
(57.2mm)		 1.37"
(34.8mm)		 1.19"
(30.2mm)

* With Bleeder Ball Check - Reduces Hose Whip

Danfoss (Eaton - Aeroquip)

Danfoss (Eaton - Aeroquip)

Danfoss is a global technology leader in power management solutions that make electrical, hydraulic and mechanical power operate more efficiently, reliably, safely and sustainably. Danfoss hydraulic pumps, motors, transmissions, valves, cylinders, controls, hose and fittings offer a unique combination of proven technology and innovative design that translates directly into reliable performance and enhanced uptime.

Shop Parts by Danfoss (Eaton - Aeroquip)