
Raypak Water Unions and O-Ring for Crosswind Pool Heaters, 018155F
30 day returns · Easy, with prepaid labels provided
Quick overview
- Genuine Raypak the factory union pack for Crosswind heaters.
- Fits seven Crosswind models I-30, I-40, I-50, I-65, O-40, O-50 and O-65.
- Unions and o-ring in one pack the water connections and the seal, so a leaking union is fixed in one order.
- Plumbing connection the unions are how the heater joins the pool plumbing, and they let it be disconnected for service.
- Crosswind inverter heaters the pack for the quiet, inverter driven Crosswind pool and spa heater line.
- Stops union drips a flattened o-ring or cracked union nut is the usual source of a leak at the heater.
Need a hand?
Frequently bought together

Water Unions and O-Ring for Crosswind Pool Heaters, 018155F
Similar products
Other products people compare with this one.
Product details
The Raypak 018155F is the water union and o-ring pack for Crosswind pool and spa heaters. The unions are where the heater connects to the pool plumbing, and they allow the heater to be unhooked for service without cutting pipe. It is a genuine Raypak part.
Fitment
Crosswind models I-30, I-40, I-50, I-65, O-40, O-50 and O-65. The Crosswind is an inverter driven heater that adjusts its output to hold the pool temperature, and these are the standard water connections for the line.
When to replace
A drip at the heater connection that a snug turn does not stop usually means the o-ring has flattened. If the union nut is cracked or its threads are worn, the union itself needs to go too. This pack covers both.
| Brand | Raypak |
|---|---|
| Manufacturer part number | 018155F |
| UPC | 840891044192 |
| Type | Water unions and o-ring pack |
| Fits | Raypak Crosswind I-30, I-40, I-50, I-65, O-40, O-50, O-65 |
| 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.
From Raypak
Raypak heaters
Raypak Pool Heater, 399K BTU, Natural Gas, Digital Ignition, Copper Heat Exchanger, 0-2000 Ft. Elevation, P-R406A-EN-C, 009219
Raypak 266K BTU Natural Gas Pool Heater, Digital Ignition, Copper Heat Exchanger, 0-2000 Ft. Elevation, P-R266A-EN-C, 009217
Raypak Crosswind V Heat Pump, 138,000 BTU, with Titanium Heat Exchanger and Digital Controls, TWPH-8550EHT08
Raypak 156A 150K BTU Above Ground Pool and Spa Heater, Digital Controls, Electronic Ignition, Natural Gas, 0-4999 ft Elevation, 014784
Genuine Raypak parts
Raypak Genuine OEM Protek Shield Module Assembly, 017960F
Raypak Kit-PC 3-Wire Board Controller IID for 206A-408 Pool Heaters, 100-10000345
Raypak Genuine OEM Propane and Natural Gas Pilot, 002003F
Raypak Genuine OEM 3/4" IID Pool Heater Natural Gas Electronic Valve, 003900F



Customer reviews
More from Raypak
Raypak Heat Pump Digital Control Board 9350/9353 5450-8450, 100-10000347$29699
Raypak Genuine OEM Protek Shield Module Assembly, 017960F$5699
Raypak Crosswind V Heat Pump, 138,000 BTU, with Titanium Heat Exchanger and Digital Controls, TWPH-8550EHT08$4,80000
Web Price
Raypak 156A 150K BTU Above Ground Pool and Spa Heater, Digital Controls, Electronic Ignition, Natural Gas, 0-4999 ft Elevation, 014784$2,49900
Web Price
Raypak Genuine OEM 3/4" IID Pool Heater Natural Gas Electronic Valve, 003900F$25899
Raypak WeatherKing 118K BTU Heat Pump 6560 with Powder-Coated Steel Cabinet and Digital Controls, TWPH-6560EHT01$3,39800
Web Price
Raypak Kit-PC 3-Wire Board Controller IID for 206A-408 Pool Heaters, 100-10000345$33499
Raypak Pool Heater, 399K BTU, Natural Gas, Digital Ignition, Copper Heat Exchanger, 0-2000 Ft. Elevation, P-R406A-EN-C, 009219$4,20000
Web Price
Raypak 266K BTU Natural Gas Pool Heater, Digital Ignition, Copper Heat Exchanger, 0-2000 Ft. Elevation, P-R266A-EN-C, 009217$3,17900
Web Price
Raypak Analog Natural Gas Above Ground Pool Heater 105,000 BTU, P-R106A-AN-C, 014779$1,99900
Web Price
Raypak Boiler Burner 10-Pack, 100-10000414$4899
Raypak Inlet/Outlet Header Complete with ProTek Shield, 017959F$42099
Raypak Genuine OEM Propane and Natural Gas Pilot, 002003F$8499
Raypak 100K Temp Sensor Kit, 9350/9353 and 5450-8450 Heat Pumps, H000329$10699
Raypak Burner Tray with Burners for 406A Pool Heaters, 010394F$93899
Raypak Genuine OEM Copper Tube Bundle 266/267, 010060F$84199
Raypak 266A Polymer Cu-Ni Tube Bundle, 014931F$1,33299
Raypak 11kW 240V E3T Electric Heater ELS-D-0011-1-Ti, 017122$1,15400
Web Price
Raypak Burner Tray with LP Burners Pro (Sea Level) for Heat Exchanger Models 399 and 406A, 019209F$38699
Raypak AVIA 399K BTU Natural Gas Low NOx Pool Heater with WiFi, HD Nitek Tubing, 0-10,000 ft Elevation, P-R404A-EN-N, 018045$4,78000
Web Price
Questions and answers
What people ask about this product, answered by our pool techs.
Which heaters does this pack fit?
What is in the pack?
Is this a genuine Raypak part?
When would I replace the unions?
Get your unadvertised price ›








