All vent caps offered by Flow Systems use the 1/4 Turn Bayonet Style of Vent Cap. Bayonet vent caps have two locking wings that adhere the battery caps to the battery cell cover. This is different from a threaded cap. If the existing caps on your batteries use threads to screw into the battery cell cover, the 1/4 turn bayonet vent will not work on your battery.

90% of all batteries in the US utilize the 1/4 Turn Bayonet Style Vent Cap. Should you still have questions related to whether or not Flow Systems vents will fit your battery, feel free to call us at any time at (419) 290-1103. To help us determine which battery vent caps will fit your batteries, please have available the battery manufacture and if possible, a picture of the existing vent cap.

WATER MISER Battery Caps will fit all U.S. manufactured industrial battery and most semi-industrial and golf cart batteries including: Exide Technologies, Intersate, Dyno, Enersys, Hawker, East Penn (Deka), Crown, Trojan, Surrette / Rolls, Superior, Bulldog, Industrial Battery Engineering (IBE), US Battery, Arrow Battery and Douglas Batteries.

Flow Systems manufactures three different size caps designed to provide the optimal solution for your particular battery application.

Standard Height Caps -The Water Miser 2000 is the vent cap used most often for general purpose applications. Its main advantage is the low height profile which is best used when limited space is available relative to the top of battery. For easier watering and level checking, use the Water Miser 2000C.

Medium Height Caps - The Water Miser 2000C has two distinct advantages. This vent cap has a larger opening which makes watering and level checking much easier. The additional height also allows for extra capacity to contains any potential overflow of electrolyte during use.

Extended Height Caps - The Water Miser 2000EX has the maximum capacity for potential "over-fill" situations. Most often used with batteries that are routinely wet. The 2000EX has the same size opening as the Water Miser 2000. Not recommended where limited space is a consideration.

Yes....Standard vent caps that come with most new batteries do not have any barrier that prevents escaping electrolyte gases from collecting on the tops of your batteries. Water Miser Battery Caps alleviate any acid build up and corrosion that occur on most US made batteries.

1 cap per battery cell. Each cell on your battery must be equipped with a Water Miser Battery Cap in order for the water saving and safety features to work properly.

Yes....By nature of their design, Water Miser vent caps provide two barriers to escaping electrolyte. These two barrier system nearly eliminates the fumes associated with standard vent caps that come pre-installed on most US manufactured batteries.

Yes....By nature of their design, Water Miser vent caps provide two barriers to escaping electrolyte. These two barrier system nearly eliminates the fumes associated with standard vent caps that come pre-installed on most US manufactured batteries.