Hand pump advisor

Pumps play an important role not only in building technology but in many areas. Their use can be found in a variety of functions. All pumps have in common that they can move the respective medium, whether cold or warm, clean and environmentally friendly and with maximum efficiency. In the case of pumps, a distinction is made between electrically operated pumps and hand pumps.

Safe and economical emptying

Hand pumps are understood to mean a pump which is operated manually, ie manually. Colloquially, they are also referred to as rotary pumps, as the promotion is done manually by means of a swivel. The hand pumps are still used today in areas without electricity. As with the electric pumps, there are also different models for the hand pumps. These differ according to the pumped medium, the materials as well as the seals. They can be used to pump water as well as mineral oil products, chemicals and cleaning agents to combustible materials such as gasoline or solvents. In principle, with a hand pump all liquid to viscous materials are moved. They are offered with or without pedestal. The advantages of this are the ability to deliver any liquid material, regardless of a power connection. Their disadvantages are that they can only be operated manually. Another disadvantage is their cleaning, which can be quite expensive under certain circumstances.

Components and functionality

Hand pumps can suck in liquids up to a depth of 8 meters. Their performance can depend on the depth, on the strength as well as the endurance of the pump operator between 10 and 40 liters per minute. A hand pump consists of several items. These include the stem, piston rod and piston, piston seal, cylinder, water intake manifold, inlet and outlet valves, and water outlet. Will the dick of hand pump pressed down, the internal piston is pulled upwards. As a result of the negative pressure located in the interior of the pump chamber, the inlet valve opens on the piston and water can flow into the piston. If you now pull the pusher back up, the piston is pushed down. The outlet valve in the piston opens and the water enters the area above the piston. When the piston begins to rise again, the outlet valve closes and the piston takes the water in it with it upwards. So it can flow through the water outlet from the pump.

applications

Hand pumps can have other purposes in addition to the promotion of liquids. These include pressure tests, mobile lifting devices, use in emergency operation and in set-up operation. In addition, hand pumps can also be offered as special solutions. One finds, among other things, for use on oil rigs as seawater-resistant and ATEX-certified versions, for medical technology and lightweight construction, particularly compact for control blocks or completely made of stainless steel for aggressive media. In addition, however, the hand pumps can also be found as high-pressure hand pumps for special applications in which particularly high pressures are necessary. This can be work in testing laboratories for leak testing or material testing, for expanding press brackets, in bolt pretensioning or in tests in hydraulic systems. All hand pumps deliver a constant delivery rate up to the respective maximum pressure.