erview tables Type H Nominal output torque of low B2SV-17-C Bevel-helical gear box B2

Flender/Flender Gear Units/Bevel-helical gear box B2

lled and MA storage should be checked for air leaks. standard test is to pressurize the storage room to 2 mm (1 in) of water and to determine how longthe pressure takes to decrease to 1 mm (1/2 in) of water (. 2-minute room, or room that takes 2 minutes to drop half of its pressure, is acceptable for 3.0% 2levels (. 3-minute room is adequate for all low- 2storage (. Many sources of informa- tion can be found that suggest the proper construction of storage rooms, including the amount and type of insulation, vapor barriers, and type of structures (2, 3, 3, . CA and MA storage rooms must be equipped with pressure relief system, since the gas seals or structure may otherwise be damaged from changes in pressure, as resultof the addition and removal of gases or temperature changes (. simple method tocontrol the pressure range is water trap, which may be constructed by building trough Cooling and Storage 5 Fig. 8 Water trap used as pressure relief system. in the wall and lling it with water (Fig. . thin wall is built from the main wall and extends down into the trough. The trough is lled with water until it extends up above the lower limit of the thin wall. When the pressure in the room changes, the water level in the inside rises or drops depending on the direction of the change. When the pressurereaches certain degree, the water level will have dropped low enough on each side toallow air to enter or exit the room and relieve the pressure. The system should be designedso that the water height differential is only 2.5 cm (, resulting in maximal pressuredifference of approximately 2 Pa. Glycol is often used instead of water since it does not evaporate readily at storage room temperatures. Another method for controlling the pressure limits in room is to use spring-loaded or weight-loaded check valves. Thesevalves are more expensive than the water traps (. For small pressure changes breatherbag may also be used. Breather bags are installed by c