Does this bring flat tennis balls back to pressure, or just keep balls at pressure while in storage?

I've found it can restore semi-flat balls. If they are completely flat, like you can squish them with almost no force, then no, it won't work. If they are semi flat so there is still some life left, but they're clearly not what they were when they were now, then this can work. It can take several weeks and helps if you store the canister somewhere warm. You can reduce the time it takes by increasing the air pressure insdie, putting some rubber bands at the bottom of the can works. It can also help to unscrew the top and retighten it every week while you wait for them to refill.

Do any of these type of products come with a pressure gauge so you can be sure it actually works/the pressure doesn't bleed down?

Not that I know of. But you can test the pressure level inside the chamber by placing the bigger end on the level ground and press the smaller end down at the same time feeling how much resistance you have to push on it to completely press it down. Try it on a fresh squeezed chamber and an older one to feel the different and determine how much air bled out. - assuming you chamber works properly. If your unit has an air leak; the different between fresh and old is small or none. You can also feel the suction resistance when you twist to take the balls out. You can also test your chamber by listening for air leaks while twisting the chamber parts together or apart. If it leaks, remove the seal; clean all seal-contacting surfaces and lubricate with WD40; fit the seal and try again. If this does not fix it; the unit is defected. Good luck

Just bought the product that comes with 2 o-rings. Where do i place the o-ring? Place 1 or 2?

You put both O rings on. The first O ring goes up on top. The second O ring has a space for it just about the grooves that you screw the two pieces together.

My tourna restore tennis ball pressurizer gets stuck before the top gets to the pressure gauge lines. any suggestions to prevent this?

All I can say is that I have been immersing the section with the rubber ring in water which also helps the seal. Next time I'm going to add either oil around the seal or more likely, WD-40.

ASIN	B00124H5EW
Age Range	Adult
Batteries Included	No
Best Sellers Rank	#22,419 in Sports, Fitness & Outdoors ( See Top 100 in Sports, Fitness & Outdoors ) #168 in Tennis Balls
Bike Type	Freestyle
Brand	Unique Sports
Colour	Transparent
Customer Reviews	4.2 4.2 out of 5 stars (6)
Date First Available	7 August 2012
Features	Unit screws together and surrounds the ball
Generic Name	Tennis Ball Saver
Hand Orientation	Right
Height	1 Inches
Importer	Racquets 4 U
Included Components	1 x Tennis Ball Saver
Item Dimensions LxWxH	8 x 8 x 20 Centimeters
Item Weight	300 g
League	Tennis
Length	3 Inches
Manufacturer	Tourna, Tourna
Material Type	Plastic
Net Quantity	1 Count
Number of Items	1
Outer Material	other
Packer	Delux Sports International
Season	Year-Round
Shape	Round
Skill level	beginner
Sport	Tennis
Style	all-season
Team	Tennis
Weight	0.8 Pounds
Width	1 Inches

TOURNA Restore-Tennis Ball Saver

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Common Questions