Master Plunger MP500 All Purpose Plunger
- Large bellows, 8 cups of water displacement
- Air release valve, quarter-turn operation
- Tri-level nozzle for kitchen sink seal
- Made in the U.S.A.
- All purpose: tubs, sinks, disposals, toilets
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A bellows-style plunger meant for household and commercial drains, with a valve that vents air to reduce overflow. No handle length or weight is listed.
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ASIN: B0006IXXR8Model: MP500Category: Toilet Plungers & Holders
Overview
Gtwater Products offers the Master Plunger MP500 as a bellows plunger for laundry tubs, bath tubs, kitchen sinks, disposals and toilets. A large bellows moves a lot of water, and a tri-level nozzle seals against different drain shapes, including sink strainers.
The air release valve lets trapped air escape on the downstroke, which helps avoid splash and overflow in a clogged toilet or sink. The limitation is the missing size detail: overall height, handle length and weight are not given.
Who it's for
Homes and light commercial settings with kitchen sinks, tubs and toilets can use one tool across them. A buyer who needs a compact travel plunger, or a set with a caddy, should look at other items.
Pros and cons
- Large bellows moves a lot of water
- Air release valve reduces overflow
- Tri-level nozzle for sink seal
- Made in the U.S.A.
- Handle length not listed
- Weight not listed
- No holder listed
Performance notes
Pressure from the bellows pushes water against the clog, while the nozzle shape forms the seal that makes that pressure work. The valve vents air with a quarter turn, which stops pressure from rebounding as the plunger compresses. A good seal at the drain matters more than force.
Specifications
| Brand | Gtwater Products, INC. |
|---|---|
| Model | MP500 |
| Item Form | Bellows plunger |
| Item Volume | 8 cups |
| Specific Uses For Product | Laundry tubs, bath tubs, kitchen sinks, garbage disposals, toilets |
| Special Features | Air release valve, tri-level nozzle |
| Surface Recommendation | Commercial and residential |
Frequently asked questions
How do I use the air release valve on the Master Plunger MP500?
A quarter turn of the hand releases air as the plunger compresses, which helps prevent overflow. The listing gives no cleaning instructions.
Does the Master Plunger MP500 work on a kitchen sink?
Yes. The tri-level nozzle is described as giving a better seal for kitchen sinks.
Is it only for toilets?
No. The listing names laundry tubs, bath tubs, kitchen sinks, garbage disposals and toilets.
Where is it made?
The bullets state it is made in the U.S.A.