The Night Quill Hydra Cap is an ultra-wide spray cap engineered for high-pressure, male-valve spray cans, designed to transform your fills and large surfaces faster and more efficiently. It is especially suited for cans with 4 mm male valves (common in ultra-wide ranges such as Mad Maxx, Montana Ultra Wide and Flame Booster lines). With this cap attached, you can achieve blanket coverage widths between 50 cm and 95 cm in a single pass, dramatically increasing your fill speed. The cap is solvent-resistant and built for repeated use, making it a durable, high-output accessory for graffiti, mural, and large-scale projects.

Features and Benefits

• Fits 4 mm Male Valves: Designed specifically for ultra-wide, high-pressure spray cans with male valves.
• Massive Spray Coverage: Delivers wide, even coverage of 50 to 95 cm, ideal for covering large areas quickly.
• Solvent-Resistant & Reusable: Built from material that withstands cleaners and solvents so it can be used hundreds of times (with proper maintenance).
• Fast Filling Capability: Speeds up the filling process—works multiple times faster than standard caps.
• Easy to Clean: Clear the nozzle by spraying upside down until no paint emerges to maintain optimal performance.
• Robust Construction: Intended for extended use under demanding conditions without easy clogging or wear.

How to Use

Attach the Hydra Cap onto a compatible 4 mm male-valve can (e.g. Mad Maxx, Ultra Wide, Booster). Shake the can thoroughly, then spray with broad, overlapping passes to cover your surface efficiently. Keep a consistent distance to maintain even coverage. Once finished, clear the cap and nozzle by spraying inverted until only air is expelled—and store clean. With proper care, the Hydra Cap will remain reliable over many uses.