Tennis Ball Pressurizer Storage Container

Product Overview  

A re-pressurizable, screw-top canister that imitates the factory-pressurised environment of a new ball tube. It slows pressure loss and can even push some bounce back into balls that have already gone soft, stretching their playable life by 3-4×.  

Core Functions  

- Maintain pressure – air-tight O-ring + mechanical lock keep internal pressure at ≈ 14 psi (the same level as a sealed Grand-Slip can).  
- Re-pressurise – every extra ¼-turn of the lid forces air through a one-way valve, letting you top up pressure manually without an external pump.  
- Protect felt & rubber – shields balls from UV, moisture and dirt while in your bag.  

Technical Specifications  

- Material: impact-grade ABS, BPA-free  
- Size: Ø 8.5 cm × 21.5 cm (fits standard 3-ball sleeve)  
- Max. working pressure: 20 psi (1.4 bar)  

Selling Points  

- Saves ± 100 balls per season = roughly US- 120 for a club player.  
- Zero-tool operation; 5-second open/close.  
- Stackable; fits backpack side pocket.  

Compatibility & Concrete Exceptions  

- Works with ALL ITF-approved Type 2 (6.54–6.86 cm Ø) tennis balls. 
- Also accepts padel balls (same diameter).  

Specific examples that DO NOT seal correctly  
1. Wilson “US Open High Altitude” – diameter 7.0 cm → lid stops 1 cm short, O-ring misses seat.  
2. Tecnifibre XLD oversized training ball (kids’ Stage 3, 8.0 cm Ø) – only one ball fits and rim cannot close.  
3. Head “Champion’s Cup” feltless foam ball (6.3 cm Ø) – too small, balls rattle and valve cannot build pressure.  

Operation in 3 Steps  
1. Drop in up to 3 used balls.  
2. Align the arrow on the lid with “LOCK”, push down and twist clockwise until the pressure indicator pin pops out (≈ 14 psi).  
3. To re-pressurise, it tooks 3-4 weeks.  

Typical Use Scenes  
- After practice: keep balls fresh for next week’s drill.  
- Night before a match: bring last week’s “flat” balls back to 140 cm rebound height (ITF minimum).  
- Off-season: store championship balls for longer time.

Care & Safety  
- Wipe grit from threads; 
- Do not expose to > 50 °C (car trunk in summer) – canister may exceed safety pressure.  
- Depressurise slowly before opening; never pry lid with tools.  

Standard delivery: Each order undergoes manual verification prior to shipment. We appreciate your understanding.