There are five general body styles of ball Valves: single body, three-piece body, split body, top entry, and welded. The difference is based on how the pieces of the valve-especially the casing that contains the ball itself-are manufactured and assembled. The valve operation is the same in each case. Stainless Steel Ball Valves, Brass Ball Valves, Sanitary Ball Valves, Water Ball Valves ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsirvalves.com
Different models (especially different volumes) of the battery, the higher his capacity, the longer it takes to use. Aside from the volume and weight factor, of course, the higher the capacity, the better.
But the same battery model, the nominal capacity (such as 600mAh) is also the same, the actual measured initial capacity is different: for example, one is 660mAh, the other is 605mAh, then 660mAh is better than 605mAh.
The actual situation may be that the capacity is high because the electrode material has more things to increase the initial capacity, and the electrode is used for stability. As a result, after a few dozen cycles, the battery with high capacity is rapidly depleted, and the capacity is low. The battery is still strong. Many domestic battery manufacturers often use this method to obtain high-capacity batteries. The user's standby time after half a year is a mess.
The civilian AA nickel-metal hydride batteries (that is, the fifth battery), generally 1400mAh, but also have the standard ultra-high capacity (1600mAh), the same is true.
The cost of increasing the capacity is to sacrifice the cycle life. The manufacturer is not in the modified context of the battery material, it is impossible to really "improve" the battery capacity.
The battery is not the higher the capacity, the better, combined with the discharge current consideration; at the same time ** buy the battery manufacturer's charger, and try to make the battery fully charged to extend battery life.
In addition, there are different styles related to the bore of the ball mechanism itself.
Ball valves in sizes up to 2 inch generally come in single piece, two or three piece designs. One piece ball valves are almost always reduced bore, are relatively inexpensive and generally are throw-away. Two piece ball valves are generally slightly reduced (or standard) bore, they can be either throw-away or repairable. The 3 piece design allows for the center part of the valve containing the ball, stem & seats to be easily removed from the pipeline. This facilitates efficient cleaning of deposited sediments, replacement of seats and gland packings, polishing out of small scratches on the ball, all this without removing the pipes from the valve body. The design concept of a three piece valve is for it to be repairable.
Experts advise: battery capacity is not as high as possible.