Fire Extinguisher Water Pump Kit – DIY Pressure Sprayer, Air Pressure STEM Model
Build a mini fire-extinguisher sprayer: squeeze the lever, the pump builds pressure and a jet of water shoots from the nozzle.
Designed by Mematrix Lab
Description
Make water shoot out under pressure
This kit builds a small water sprayer shaped like a fire extinguisher. Inside the red body, a pump with a one-way valve pushes water out through the tube. Fill it with water, press the lever and a jet sprays from the nozzle; switch the nozzle heads to change the spray.
Science it demonstrates
- Pressure: how pumping squeezes air and water
- One-way valves: why water only flows out
- Pumps and levers
- Fire safety: how real extinguishers work
What you'll do
- Assemble the pump, valve and lever
- Fit the tube and nozzle to the bottle
- Fill it with water
- Press the lever and test the different nozzle heads
Parts list
- Red bottle with label sticker
- Pump with lever, valve and spring
- Tube and nozzle heads
Good to know
- Use outdoors or over a sink. Use clean water only; it is a model, not a real extinguisher.
- Contains small parts. Recommended for ages 8 and up, with adult guidance.
Specs and Docs
- Assembled size
- Approx. 6 × 5 × 17.2 cm
- Power
- Hand-operated (no batteries needed)
- Material
- Plastic
- Suggested age
- 8+ with adult guidance
Shipping
Standard shipping: $9.00 for the first item, +$1.80 for each additional item. Free shipping on orders over $260.
We ship worldwide, by default with economical international post (UPU / China Post small packet) to keep shipping costs low. Orders are usually handed to the carrier within 2–5 business days, and economical international post then takes about 10–30 business days to arrive; these are estimates, not guarantees. Delivery time depends on the destination and on postal and customs handling. If you need your order by a certain date, email us before ordering: faster shipping can be arranged, with the extra cost charged at the carrier's actual rate. Items that contain batteries or magnets are marked on their product page and ship by a special carrier line; some countries and regions cannot be reached by that line, and if yours is one of them we refund the order in full.
Customs & duties
Import duties, taxes and customs requirements depend on the destination country, the shipping route and the local customs office, so we cannot say in advance whether any will apply to your parcel. Customs may hold a parcel, ask for more information, or ask for duties or taxes to be paid, even when the declared value is correct. If you have a question about your country, email us before ordering.
See our shipping & returns policy.