Horizon Size 9 Winterizing Plug, 1-1/4 in Fitting or 1-1/2 in Pipe (OD)
Tapered expansion plug for off-season plumbing seal-up.
Genuine Horizon 9 tapered winterizing plug, sized for 1-1/4 in Fitting or 1-1/2 in Pipe (OD). Push-in expansion design seals open plumbing ends so freeze damage cannot crack a return line or fitting over winter. Reusable plastic plug with a captive wing nut, drives the rubber gasket against the inside diameter for a positive seal. Outer diameter is ~1.781 in, the standard Technical Products / Anderson plug-size 9 cross-reference.
Specifications
| Plug Size | 9 |
|---|---|
| Fits | 1-1/4 in Fitting or 1-1/2 in Pipe (OD) |
| Use Case | 1-1/4 in PVC socket fitting, or 1-1/2 in PVC pipe OD seal |
| Outer Diameter | ~1.781 in |
| Sizing Standard | Technical Products / Anderson plug-size system |
| Construction | Molded plastic top, rubber gasket, wing-nut compression |
| Sealing Method | Push-in, hand-tighten wing nut to expand gasket against pipe ID |
| Reusable | Yes, store dry between seasons |
| PST SKU | PST-99-555-1005 |
Good to Know
Does this go in a pipe or in a fitting socket?
This size (9) is sized for 1-1/4 in Fitting or 1-1/2 in Pipe (OD). Pipe plugs go into the cut end of a Sch 40 PVC pipe (smaller ID). Fitting plugs go into the open socket end of a coupling, ell, or valve port (larger ID). If you are not sure which end you have, measure the inside diameter with a caliper and match to the OD column on the spec table.
How tight should I crank the wing nut?
Hand-tight plus a quarter turn. The rubber gasket needs to expand against the pipe ID, but over-cranking deforms the gasket and shortens its life. If the plug leaks under low blower pressure, add another quarter turn and retest. If you are pressurizing above 5-10 psi, switch to a threaded plug instead.
Need a different size?
The Horizon plug series covers every standard plug-size number. Common sister sizes: 00 for 1/2 in Pipe, 0 for 1/2 in Fitting, 2 for 3/4 in Pipe, 3 for 3/4 in Fitting, 5 for 1 in Pipe, 6 for 1 in Fitting. Match the plug-size number to your pipe or fitting ID and you will land on the right SKU.
Free ShippingReusable PlugShips Same DayStandard Plug-Size Sizing
