Constitutional monarchy. In a constitutional monarchy the post of the head of state is usually passed (by some form of primogeniture) within a royal family. In a constitutional monarchy the head of state is normally the theoretical head of the executive, producing phrases like Her Majesty's Government. In some instances the monarch (or in states in the Commonwealth of Nations a governor-general) may chair the cabinet, though they play not role in policy formation.
A safety vacuum release system usually is simple to install and test, as long as a few basic rules are followed. By Dunia Hamza. A safety vacuum release system (SVRS) is a system or a device that disables a pool pumpâs suction ability so that a body or object trapped against the suction outlet is freed.
FIGURE 1. VACUUM BREAKER DESCRIPTION OF OPERATION The vacuum breaker is designed to prevent vacuum conditions from occurring in pipes or tanks. After a power failure or rapid draining of the system, a vacuum condition often occurs in a pipe or tank.PTIONAL AIR RELEASE VALVE: The vacuum breaker may be furnished with an optional air release valve as shown in Figure 3. The purpose of the air release valve is to vent accumulated air while the pipeline is in operation and under pressure.