Flojet 20381-006 Quad Port Kit, 3/4" Hose, Pair
The Flojet 20381-006 is the genuine pair of Quad-Port snap-in fittings with 3/4" hose connections and EPDM O-rings, covering both the pump inlet and outlet.
Three-quarter inch is the largest of the common hose sizes on these pumps, and it is chosen where flow matters more than compactness. The advantage is most pronounced on the suction side. A pump can only draw with the atmospheric pressure available to it, so any restriction in the inlet directly limits how well it primes and how much it can lift. Going up to 3/4" reduces the velocity in that line and the friction loss that comes with it, which shows up as faster priming, more reliable lift and less tendency to cavitate on a long or awkward suction run.
Supplying them as a pair means inlet and outlet are renewed together, which matters because both age at the same rate in the same water. Push each fitting fully into the housing, confirm the O-ring is undamaged and squarely seated, and fit both clips before pressurising. On the hose side, warm stiff 3/4" hose before fitting it — forcing it cold either leaves it short of fully seated or damages the inner wall.
Key Features
- Genuine Flojet (Xylem) service part — supplied as a pair for inlet and outlet
- Quad-Port snap-in fitting — no threads, no sealant, no torque to judge
- 3/4" hose connections, the largest of the common sizes
- Lower suction-side friction loss, so priming and lift both improve
- EPDM O-rings suited to water, drinking water and mild chemistries
Applications
- Flojet pumps with Quad-Port snap-in port housings
- Higher-flow fresh water, washdown and transfer systems
- Long or awkward suction runs where friction loss matters
- Replacing ports with damaged O-ring grooves or broken clips
- Marine, RV and mobile water systems
Specifications
- Brand: Flojet (Xylem)
- Manufacturer Part Number: 20381-006
- Part Type: Quad-Port snap-in port fittings
- Connection: 3/4" hose
- O-Ring Material: EPDM
- Supplied: Pair
- Condition: New
Frequently Asked Questions
Q: Does a larger port help the discharge side too?
A little, but far less than on the inlet. The pump can push with real pressure; it can only pull with what the atmosphere provides, which is why suction restriction matters most.
Q: Should the suction hose be reinforced?
Yes. Suction hose works under negative pressure and unreinforced hose can collapse, creating exactly the restriction the larger size was fitted to avoid.
Q: Can I run 3/4 in. on the inlet and 1/2 in. on the outlet?
That is a very common and sensible arrangement. The larger inlet helps priming while the smaller outlet keeps the delivery plumbing compact.
Q: Why do both ports need replacing at once?
Because they age together in the same water. Renewing one leaves the other at the same point in its life, which usually means repeating the job shortly.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm the correct part before you order.
CLRMarine
