Polaris 9-100-1202 Back-Up Valve Case Kit (White) – Outer Case Replacement for Polaris Vac-Sweep 360 In-Line Back-Up Valve
The Polaris 9-100-1202 is a replacement case kit (outer housing) for the in-line back-up valve used on the Polaris Vac-Sweep 360 pressure-side pool cleaner. The back-up valve helps the cleaner periodically reverse to pull away from corners and obstacles; this part replaces the outer case when it is cracked, leaking, or damaged.
Key Features
- Part Number: 9-100-1202
- Part Type: Back-up valve case kit (outer case / housing)
- Color: White
- Cleaner Compatibility: Polaris Vac-Sweep 360 (verify by your parts diagram)
- Function: Replaces the damaged outer shell so the in-line back-up valve can seal and operate correctly
Important Note on What This Is
- This part is the outer case/housing for the in-line back-up valve.
- It is commonly sold as the case only and may not include internal gears/mechanism (compare to your existing valve before ordering).
- If your valve is not cycling or the internals are worn, you may need a complete back-up valve assembly instead of the case.
Common Reasons to Replace
- Cracks or splits in the housing
- Water spraying/leaking from the valve body
- Loose or damaged hose connection area
- Valve case is warped and won’t seal properly
Installation Notes
- Turn off the pump before disconnecting the cleaner hose.
- Install the new case in the same orientation as the original (match any flow direction markings if present).
- Inspect hose ends and connections for wear while servicing—sun-damaged hose ends can cause repeat leaks.
- After reassembly, run the cleaner and check for leaks at both valve connections.
Related Products
- Search: Polaris 9-100-1202
- Search: Polaris 360 Back-Up Valve
- Search: Polaris 360 Parts
- Search: Polaris 360 Hose Swivels
- Search: Polaris 360 Hose Nuts
- Search: Polaris 360 Feed Hose
- Search: Polaris Wall Fitting Screens
Installation & Maintenance Tips
- Keep the wall fitting screen/filter clean—restricted flow can reduce cleaner power and affect back-up behavior.
- If the cleaner gets stuck often, confirm correct hose length and float placement; improper hose setup can mimic back-up valve issues.
- Inspect hose joints for small sprays—minor leaks can cause a noticeable drop in cleaner performance.
- Store the cleaner and hose out of direct sunlight when possible to slow UV damage to plastics and hose material.
