RPLQ4 Series Liquid Cooling Connectors


Colder RPLQ4 Series Quick Disconnect Couplings are reliable, dripless connectors designed for use in rack-mounted liquid cooling applications. The non-spill design and durable construction of the RPLQ4 series ensures that the connectors continue to protect valuable electronics over time. Couplings need only be within 1/8" of fully engaged in order to achieve the maximum flow. These RPLQ4 connectors are constructed out of chrome-plated brass with polysulfone valves, and come with either cool blue or warm red color rings for quick identification.

RPLQ4 Valved Rack and Panel Straight Thread Port SAE Bodies

RPLQ4 Valved Rack and Panel Straight Thread Port SAE Bodies
  • Material: Chrome-plated brass
  • Valves: Polysulfone
  • Valved Spring (wetted): Stainless steel
  • Seals: EPDM
  • Lubricants: Krytox® PFPE
  • Color: Chrome with cool blue or chrome with
    warm red
  • Flow Capacity: 1/4" nominal flow
  • Operating Pressure: Vacuum to 120 psi, 8.3 bar
  • Temperature: 0°F to 240°F
  • Max Flow at Disconnect: 3.0 gal/min
1/4 SAE-04 Cool Blue
FWS # RPLQ4D30004BLU
$38.48 / single
$373.26 / bag of 10
($37.33 each)
1/4 SAE-04 Warm Red
FWS # RPLQ4D30004RED
$38.48 / single
$373.26 / bag of 10
($37.33 each)
3/8 SAE-06 Cool Blue
FWS # RPLQ4D30006BLU
$38.48 / single
$373.26 / bag of 10
($37.33 each)
3/8 SAE-06 Warm Red
FWS # RPLQ4D30006RED
$38.48 / single
$373.26 / bag of 10
($37.33 each)

RPLQ4 Valved Rack and Panel Pipe Thread Bodies

RPLQ4 Valved Rack and Panel Pipe Thread Bodies
  • Material: Chrome-plated brass
  • Valves: Polysulfone
  • Valved Spring (wetted): Stainless steel
  • Seals: EPDM
  • Lubricants: Krytox® PFPE
  • Color: Chrome with cool blue or chrome with
    warm red
  • Flow Capacity: 1/4" nominal flow
  • Operating Pressure: Vacuum to 120 psi, 8.3 bar
  • Temperature: 0°F to 240°F
  • Max Flow at Disconnect: 3.0 gal/min
1/4 NPT Cool Blue
FWS # RPLQ4D10004BLU
$37.44 / single
$363.17 / bag of 10
($36.32 each)
1/4 NPT Warm Red
FWS # RPLQ4D10004RED
$37.44 / single
$363.17 / bag of 10
($36.32 each)
3/8 NPT Cool Blue
FWS # RPLQ4D10006BLU
$37.44 / single
$363.17 / bag of 10
($36.32 each)
3/8 NPT Warm Red
FWS # RPLQ4D10006RED
$37.44 / single
$363.17 / bag of 10
($36.32 each)

RPLQ4 Valved Rack and Panel Straight Thread Port SAE Inserts

RPLQ4 Valved Rack and Panel Straight Thread Port SAE Inserts
  • Material: Chrome-plated brass
  • Valves: Polysulfone
  • Valved Spring (wetted): Stainless steel
  • Seals: EPDM
  • Lubricants: Krytox® PFPE
  • Color: Chrome with cool blue or chrome with
    warm red
  • Flow Capacity: 1/4" nominal flow
  • Operating Pressure: Vacuum to 120 psi, 8.3 bar
  • Temperature: 0°F to 240°F
  • Max Flow at Disconnect: 3.0 gal/min
1/4 SAE-04 Cool Blue
FWS # RPLQ4D46004BLU
$29.64 / single
$287.51 / bag of 10
($28.75 each)
1/4 SAE-04 Warm Red
FWS # RPLQ4D46004RED
$29.64 / single
$287.51 / bag of 10
($28.75 each)
3/8 SAE-06 Cool Blue
FWS # RPLQ4D46006BLU
$29.64 / single
$287.51 / bag of 10
($28.75 each)
3/8 SAE-06 Warm Red
FWS # RPLQ4D46006RED
$29.54 / single
$286.50 / bag of 10
($28.65 each)

RPLQ4 Valved Rack and Panel Pipe Thread Inserts

RPLQ4 Valved Rack and Panel Pipe Thread Inserts
  • Material: Chrome-plated brass
  • Valves: Polysulfone
  • Valved Spring (wetted): Stainless steel
  • Seals: EPDM
  • Lubricants: Krytox® PFPE
  • Color: Chrome with cool blue or chrome with
    warm red
  • Flow Capacity: 1/4" nominal flow
  • Operating Pressure: Vacuum to 120 psi, 8.3 bar
  • Temperature: 0°F to 240°F
  • Max Flow at Disconnect: 3.0 gal/min
1/4 NPT Cool Blue
FWS # RPLQ4D24004BLU
$28.34 / single
$274.90 / bag of 10
($27.49 each)
1/4 NPT Warm Red
FWS # RPLQ4D24004RED
$28.34 / single
$274.90 / bag of 10
($27.49 each)
3/8 NPT Cool Blue
FWS # RPLQ4D24006BLU
$28.34 / single
$274.90 / bag of 10
($27.49 each)
3/8 NPT Warm Red
FWS # RPLQ4D24006RED
$28.34 / single
$274.90 / bag of 10
($27.49 each)

Colder RPLQ4 Series Connector Features and Benefits


FeaturesBenefits
Non-spill designNo spills when disconnecting under pressure
Redundant sealing when connectedExtra leak protection
Color-codingHelps differentiate cooling lines
Friction-free valveValve system is designed for extended periods in a connected state
RuggednessCan withstand long-term, repeated use
Axial engagement toleranceEven when disengaged, valves are designed to allow full flow