Pool vacuum hoses

The right diameter depends on your pump's suction flow rate and your pool's connection standard. For conventional in-ground pools with rigid PVC piping or accessories such as the Starpool 35 cm Aluminum Manual Pool Vacuum Head - Professional Suction Head - Wing Nut Connection, the technical standard is 38 mm (1½ inches) to prevent hydraulic restrictions.

For above-ground or removable pools that use compact pumps, the usual size is 32 mm (1¼ inches). Using a smaller diameter than required with powerful pumps will cause the corrugated hose walls to collapse under vacuum.

For an 8x4-meter pool with a centrally located suction inlet, the recommended minimum length is 10 to 11 linear meters. The technical rule is to add the distance from the suction inlet to the farthest corner of the pool, the maximum depth, and two extra meters.

This extra two meters prevents mechanical tugs that could dislodge the skimmer's conical connector. If you purchase a section that's too long, the excess hose floating on the water will form loops that slow down equipment such as the Zodiac T5 Duo automatic pool cleaner.

Floating hoses maintain their position on the water's surface to prevent the tube from dragging along the bottom. This controlled buoyancy offers clear operational advantages:

• Prevents snags on main drains, ladders, or pool corners.
• Reduces the operating weight borne by the manual vacuum head.
• Ensures an uninterrupted path for mechanical pool cleaners.
• Makes it easy to immediately spot any kinks or air leaks.

Made from EVA copolymer or low-density corrugated polyethylene, these sections incorporate sealed air chambers that do not absorb water over time.

The formation of continuous spirals is due to the absence of a free-swiveling connector at the end attached to the cleaning head. The solution is to check that the end fitting rotates 360 degrees without friction to dissipate the torsion produced by the user's movement.

Also, always store the hose straight or in wide loops, without tight bends. If the material has developed a heat-induced set after seasons in the sun, lay it stretched out on the ground in full sun for three hours before filling it to restore its original flexibility.

Priming pool cleaner hoses requires filling the tube completely with water before attaching it to the suction inlet to prevent air pockets in the pump. To do this quickly, follow these steps:

• Lower the head with the hose attached to the bottom of the pool.
• With the filtration system running, place the free end of the hose directly in front of a return jet.
• Keep the water jet flowing until all the bubbles are expelled through the submerged head.
• Cover the connector opening with the palm of your hand and quickly insert it into the vacuum inlet or skimmer.

This process ensures that the filtration circuit maintains a perfect vacuum with no risk of losing its prime.

The technical difference lies in wall thickness, the polymer’s elastic memory, and durability against chlorinated products. While a basic thin-walled polyethylene corrugated hose tends to collapse under the strong suction of pumps over 0.75 hp, ethylene-vinyl acetate (EVA) hoses feature a high-resilience, dual-wall extruded design.

The EVA model absorbs impacts against the coping, withstands high chlorine concentrations without cracking, and retains its flexibility in cold water. The higher initial investment pays for itself by doubling the accessory’s service life.

Suction leaks show up as a continuous stream of bubbles in the impeller and air collecting in the pump’s transparent pre-filter lid. If suction drops sharply within a few minutes of starting to clean, air is entering through a corrugated section or a worn connector.

To locate the exact leak, run the taut hose underwater with the motor on while watching for air bubbles. If the connector is cracked, cut off the damaged section and install a replacement tapered sleeve coupling with waterproof sealant.