Force Pump
Product Code : EL-POM-10378
Quick answer: The force pump glass model shows how a force pump drives water out under pressure using double-valve action. A glass primary cylinder with a non-return float valve at its lower end feeds, through a side tube, a secondary cylinder with its own float valve, and the water leaves through a jet. Lab Exports manufactures it in Delhi for schools, colleges and universities.
Specifications
| Item | Specification |
|---|---|
| Material | Glass |
| Primary cylinder | Non-return float valve at the lower end and an outlet side tube |
| Secondary cylinder | Non-return float valve, joined to the primary cylinder by the side tube |
| Outlet | Drawn out into a jet from the secondary cylinder |
| Principle shown | Double-valve action and ejection of water under pressure |
How the force pump works
In a force pump the piston itself has no valve. On the upstroke the pressure in the primary cylinder falls, the float valve at its lower end opens, and atmospheric pressure pushes water in from below. On the downstroke that valve closes and the piston forces the water through the side tube, past the valve of the secondary cylinder and out of the jet. The second valve stops the water running back when the piston rises again, so each downstroke delivers a fresh charge of water under pressure.
- Stand the lower end of the primary cylinder in a trough of water.
- Work the pump steadily and watch the lower float valve open as water is drawn in.
- On each delivery stroke, watch the valve in the secondary cylinder open as water is forced across.
- Direct the jet into a sink or tray and compare its strength with the flow from the lift pump model.
Because the water is pushed out by the piston rather than simply lifted, a force pump can deliver a strong jet or raise water well above the pump, limited mainly by the force on the piston and the strength of the parts. On the suction side, as with any pump drawing water from below, the lift is still limited by atmospheric pressure.
Key features
- Glass construction, so the valve action is visible through the whole cycle
- Two non-return float valves that show the double-valve principle
- Secondary cylinder joined to the primary cylinder by a side tube
- Outlet drawn out into a jet to show water delivered under pressure
- Pairs with the lift pump model for a lesson comparing the two pump types
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the force pump model at its works in Laxmi Nagar, Delhi, and supplies it to schools, colleges and universities in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Properties of Matter products
- Lift Pump (EL-POM-10377)
- Fluid Pressure Apparatus, Hydraulic Press (EL-POM-10379)
- Bourdon Gauge (EL-POM-10376)
- Kinetic Theory Apparatus (EL-POM-10380)
- Boyles Law Apparatus, Advanced with Oil (EL-POM-10375)
- Charles Law Apparatus, Basic (EL-POM-10374)
The full range is in the Properties of Matter section of the Physics Lab range.
Frequently asked questions
What does the force pump model demonstrate?
It demonstrates double-valve action and how a force pump ejects water under pressure through a jet.
How many valves does it have?
Two non-return float valves, one in the primary cylinder and one in the secondary cylinder.
How does a force pump differ from a lift pump?
A lift pump only raises water to its own outlet, while a force pump uses its piston to push water out under pressure, so it can deliver a jet or raise water above the pump.
What is the price of the force pump model?
Prices are not published on the website. Add the force pump model to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-POM-10378 and the quantity, to receive a quotation.
Does Lab Exports manufacture the force pump model?
Yes. Lab Exports manufactures the force pump model at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-POM-10378.
Request a quote
Email [email protected] with the house code EL-POM-10378 and the quantity, or add the force pump model to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
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