JILONG | Classic Double Action Hand Pump | 29P387

The Jilong Avenli Classic Double Action Hand Pump (Model 29P387) is built as a heavy-duty, fast-cycling manual inflation and deflation tool for high-capacity recreational gear. Standing at a tall 38 cm (approximately 15 inches) in height, this pump strikes an optimal ergonomic sweet spot. The extended cylinder length translates into a much larger internal volume chamber, meaning you move significantly more air with every physical stroke. It operates completely independently of electrical grids or batteries, making it an essential accessory for remote wilderness camping, beach excursions, or backyard setup. Constructed from premium, impact-resistant polypropylene, the pump is ruggedly built to handle the physical strain of fast-paced pumping against high back-pressure. The core mechanical advantage lies in its continuous double-action piston matrix, which compresses and forces air through the hose on both the upward pull and downward push. Additionally, the 29P387 features a reversible airflow configuration: by swapping the hose connection to the secondary port, the pump switches from an inflator into a powerful manual vacuum. This allows you to pull every last drop of air out of a mattress or pool ring so it rolls up completely flat for storage. The base is molded with extended, texturized foot plates to ensure firm grounding leverage, while an extra-long 105 cm flexible accordion hose provides exceptional reach to awkward or high-walled valves.