
Waterway 2" Union, Male Pipe Thread by Female Slip, 400-5080
30 day returns · Easy, with prepaid labels provided
Quick overview
- Two inch size Made for 2 in. pool plumbing at the equipment pad.
- MPT by female slip Threads into a pump or filter port on one side and glues to 2 in. pipe on the other.
- Breaks the line without cutting A union is what lets the pump or filter come out for service later.
- Genuine Waterway Waterway plumbing part 400-5080.
- Pump and filter duty Suited to the suction and discharge connections on pool pumps and filters.
- Seal the thread, not the slip Thread sealant or PTFE tape goes on the male thread only; the slip side is solvent welded.
Need a hand?
Similar products
Other products people compare with this one.
Hayward Threaded Extension Coupling, 1-1/2 in. MIP x 1-1/2 in. FIP, White, SPX1091Z9$1699
Jandy 2" Union O-Ring, R0412700$1099
Hayward 1-1/2" Union Male Thread, Black, SP1480BLK$2699
Pool I.D. Pool Plumbing and Piping Tag Labels, SP1107$1799
Waterway 1-1/2" x 1-1/2" S Union MPT, 400-4030$1599
CMP 3/4" Male x 3/4" Slip Union, 21063-750-000$1499
Waterway 1.5" Union Gasket, 711-4000$999
Aquamoto FullFlow 2" PVC Sweep 90 Degree Street Elbow Slip x SPG, Black, 21006-004-000$1399
SuperPro PVC 2" Union, Slip by Slip, 21049-200-000$1399
CMP Fiberglass Pool Dry Conduit Nicheless LED Light Wall Fitting 1.5", 25503-510-500$2599
CMP Union, 1.5" Thread x 2" Slip, Hi-Temp, 21063-160-000$1799
Hayward 1-1/2" Slip x Threaded Union (ABS), SP14953S$2199
CMP FullFlow 2" PVC Sweep 90 Degree Elbow Slip x Slip, Black, 21005-004-000$1399
Pentair Black Replacement Union Nut, SuperMax, 270141Z$2699
Lasco 90 Degree Elbow, 2 in. SCH 40 PVC, 406-020$1599
Hayward Vari-Flo Nozzle Assembly, Adjustable, SP1434PAKB$1999
Pentair Genuine OEM Union Nut C Clip, 178732Z$1399
AquaStar Light Gray Flush Retrofit Eyeball, JO103$1599
Praher 2" Slip x MIP Union, 200-903$1599
Praher 1-1/2" Slip by Slip Union, 150-100$1399
From Waterway
Waterway equipment
Waterway Power Defender Variable Speed Pump 1.65HP 230V, PD-165
Waterway 150 Sq. Ft. 1.5 HP 2 Speed Clearwater Cartridge Filter System, 522-5167-6S
Waterway Complete Renegade Vinyl Skimmer, Wide Mouth, 9 in. Throat, White, 540-8500
Waterway 3/4 HP Booster Pump, SG3810430-1PDA
Waterway parts
Waterway Renegade Pool Skimmer Basket, 542-3240
Waterway 6 in. Pump Trap Assembly, 2 in. x 2 in. Ports, 310-6600
Waterway Adjustable Spa Jet, Gunite, 210-3400
Waterway Poly Gunite Jet Assembly 1.5" x 2" Tee Body, 210-3700


Product details
The Waterway 400-5080 is a 2 in. union with male pipe thread on one end and a female slip socket on the other. It is the fitting that joins 2 in. pool pipe to a threaded pump or filter port.
Why the union matters
Every piece of equipment on a pad eventually comes off for service or replacement. A union in the line means that job is a matter of loosening a collar by hand. Without one it means a saw, new pipe and fresh glue, and a plumbing repair on top of the original job.
Fitting it
The threaded end screws into the equipment port with PTFE tape or a pool rated thread sealant, tightened by hand plus a modest turn. The slip end is solvent welded to 2 in. pipe. Keep sealant out of the slip socket so the joint bonds properly.
| Brand | Waterway |
|---|---|
| Manufacturer part number | 400-5080 |
| UPC | 806105081803 |
| Fitting type | Union |
| Size | 2" |
| Connections | Male pipe thread by female slip |
| Application | Pool pump and filter plumbing |
| Shipping weight | 0.5 lb |
| Ships | Parcel |
Request a quote
Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.
Customer reviews
More from Waterway
Waterway Tank Body, Crystal Water, Gray, with Label, 550-4407$45699
Waterway 6 in. Pump Trap Assembly, 2 in. x 2 in. Ports, 310-6600$7099
Waterway Lock Ring, Pro Clean Plus, 550-0701B$9099
Waterway 150 Sq. Ft. 1.5 HP 2 Speed Clearwater Cartridge Filter System, 522-5167-6S$89999
Waterway 100 SqFt ClearWater II Cartridge Filter System for Above Ground Pool 1.5HP, 520-5147-6S$74599
Waterway Renegade Pool Skimmer Basket, 542-3240$2199
Waterway Poly Gunite Jet Assembly 1.5" x 2" Tee Body, 210-3700$2199
Waterway Adjustable Spa Jet, Gunite, 210-3400$2999
Waterway Tank Lid with Lock Ring, Pro Clean Plus 125/150 sq ft, 550-0621$25499
Waterway Wall Fitting Escutcheon, Gray, for In-Ground Vinyl Liner Return Fittings, 218-1447$699
Waterway Thread-in 5-Scallop Twin Roto Poly Storm Gunite Jet Internal, Gray, 229-8127$1999
Waterway Crystal Water Tank O-Ring, 805-0000$3299
Waterway 1-1/2" x 1-1/2" S Union MPT, 400-4030$1599
Waterway Complete Renegade Vinyl Skimmer, Wide Mouth, 9 in. Throat, White, 540-8500$16299
Waterway 10" Tru Flo Cover and Frame, White, 640-1900 V$3899
Waterway Filter Collar Valve Wrench, 505-1970$1999
Waterway Roto Deluxe Jet, White, 210-6090$3299
Waterway Lid Diverter Assembly with Gasket, 600-9600$9699
Waterway Universal Grate, 12 in. x 12 in., White, 640-4740 V$6699
Waterway Pump Union, 2" Nut x 1-1/2" Slip or 2" Spigot, 400-9230$799
Questions and answers
What people ask about this product, answered by our pool techs.
What are the two ends?
Why fit a union at all?
What size pipe does it take?
Do I need thread sealant?
Get your unadvertised price ›







