This is a direct-replacement brass drain assembly for early-model PolarCool black 36" Pro portable evaporative coolers. If your reservoir won't drain cleanly or the original brass fitting has corroded, this kit gets you back in service.
Brass resists mineral buildup and corrosion better than plastic fittings exposed to standing reservoir water, which is why PolarCool used it on early 36" Pro production runs. This assembly restores that original drainage path for facility and maintenance teams servicing these units in warehouse, industrial, and outdoor settings. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
- 3/4" brass threaded drain outlet, washer, brass nut, and cap (6422-6022) included as a complete kit
- Fits early-model PolarCool black 36" Pro evaporative coolers with brass drain fittings
- Does NOT fit later-model 36" Pro units, which use the 2" drain assembly, part number 0006-0722
- Verify your existing drain size and material before ordering — the two configurations are not interchangeable
- Brass construction resists corrosion and mineral scale buildup from reservoir water
- Complete kit — outlet, washer, nut, and cap included, no separate parts to source
- Direct-fit replacement for early-model units simplifies installation and cuts service time
- Supports proper reservoir drainage for consistent evaporative cooling performance
| Spec | Value | Unit |
|---|---|---|
| Drain Outlet Diameter | 3/4 | in |
| Material | Brass | - |
| Kit Contents | Drain outlet, washer, nut, cap (6422-6022) | - |
| Part Number | 6422-6017 | - |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
- Fits: Early-model PolarCool black 36" Pro portable evaporative air coolers with original brass drain fittings
- Does NOT fit: Later-model 36" Pro units using the 2" drain assembly, part number 0006-0722
- Verify existing drain configuration (size and material) before ordering to confirm proper fit
| Category | Detail |
|---|---|
| Material Safety | Brass construction; resists corrosion and mineral buildup in water-contact service |
| Installation Requirement | Follow proper installation procedures to ensure secure fitment and leak-free operation |
FAQ
Will this drain assembly fit my 36" Pro cooler?
It fits early-model PolarCool black 36" Pro units equipped with the original brass drain fittings. Later-model 36" Pro units use a 2 in drain assembly, part number 0006-0722, and this kit does not fit those.
What size is the drain outlet?
The drain outlet is 3/4 in, brass-threaded, and includes a washer, brass nut, and cap (6422-6022).
How do I know if I have the early or later drain configuration?
Check the existing drain size and material before ordering. Early units use a 3/4 in brass assembly; later units use a 2 in assembly (part 0006-0722). Verify your unit's configuration to confirm fit.
What material is this drain assembly made of?
Brass, chosen for corrosion resistance in outdoor and industrial cooling applications.
Warranty & Registration
Manufacturer warranty terms for this component are not included in the provided data. [NEEDS VERIFICATION] Refer to the "Resources (System Manuals and Warranty)" Tab above on this page for manufacturer warranty terms and registration details. Ask us before you order if you're unsure which drain assembly your unit needs — we always reply back.
