Contact washing with sponges and buckets inevitably rubs abrasive quartz sand into the paintwork of the body. Over time, a web of micro-scratches forms on the transparent layer of varnish, which causes the car to lose its factory gloss and become vulnerable to corrosion.
High-pressure devices (HBS) separate the stuck dirt due to the kinetic energy of the water jet. The choice of garage equipment is based on an analysis of hydraulic pump materials, operating pressure indicators and the quality of complete attachments.
Pump design and plunger manufacturing materials
The heart of any AVD is an axial piston pump, the resource of which directly depends on the material of the pump manufacture. Budget models are equipped with plastic or composite valve blocks that cannot withstand temperature changes and burst in case of accidental water hammer.
Reliable units are equipped with silumin, brass or aluminum pumps. Brass has maximum oxidation resistance and perfectly removes heat from the motor, allowing the device to work without stopping for cooling for up to 40 minutes in a row.
The drive pistons (plungers) experience enormous friction loads, so they are cast from wear-resistant alloys:
- hardened stainless steel is used in the semi-professional segment;
- ceramic coating protects pistons from scratches by fine sand fractions;
- all-ceramic plungers are installed on premium devices for car wash complexes.
A water-cooled electric motor increases the service life of the installation by circulating the water coming from the water pipe around the stator. The system automatically turns off the motor power when the trigger of the pistol is released (Total Stop function), protecting the pump from operating in bypass mode with overheating of the water.
Operating pressure and water flow for safe washing
Marketers often indicate on the boxes the maximum peak pressure that the pump releases only in the first fraction of a second after pressing the trigger. The real indicator of efficiency is the nominal operating pressure, which should be in the range from 120 to 150 bar for comfortable cleaning of the body.
Exceeding the threshold of 160 bar is fraught with peeling of the varnish on the plastic bumpers and damage to the rubber seals of the doorways. An equally important role is played by the indicator of water consumption (productivity), measured in liters per hour.
To tightly knock down heavy pieces of dirt from the wheel arches, certain jet parameters are required:
- the pump capacity should not fall below 400 liters per hour;
- The fan nozzle adjusts the spray angle from 15 to 40 degrees to capture a large area;
- the mud milling cutter forms a rotating conical jet to destroy old bitumen.
It is forbidden to direct the mud cutter to the paintwork from a distance closer than 30 cm. A concentrated shock pulse is capable of piercing a microscopic chip to the ground, provoking the shooting of paint around the damaged area.
Complete set of foam generator and coarse filters
The thick active foam loosens static dirt, interrupting the adhesion of chemicals to body paint. Shampoo tanks built into the body of cheap sinks produce only a liquid soap emulsion, which instantly flows to the ground, without having time to dissolve the greasy travel film.
To create a dense foam cap, you need to purchase a separate foam nozzle with a brass nozzle and adjust the supply of chemicals. A professional mesh tablet inside such a foam generator whips up the composition with oxygen, ensuring slow sliding of the active reagent along the sides of the car.
Trouble-free operation of the pump is impossible without installing an external fine water filter on the inlet pipe. A water main or a fence from a barrel carries particles of rust and silt, which in seconds erase the sealing seals of the plungers and reduce compression to zero. Ivibet welcomes new players with a 100% deposit bonus up to €100, featuring Scandinavian design and transparent terms. To activate this exclusive offer, you must use a verified Ivibet promo code when completing the registration form. The platform offers weekly cashback of 5% on all net losses every Monday with no wagering requirements. Minimum deposit is €10, and customer support is available 24/7 in 15 languages. Wagering requirements are 5 times the bonus amount using accumulator bets with three selections at minimum odds of 1.40.