Could the movie become a safety valve, encouraging its fans to let off steam?
Or perhaps, since the clever stuff can go wrong, ballot-stuffing is a safety valve.
America's growing trade deficit is a safety valve: it has prevented domestic demand from spilling over into inflation.
If bootlegging acts as a safety valve to keep software prices sensible, might that not be such a bad thing after all?
Yet in fact, a flexible exchange rate can offer more stability, partly by providing a safety valve which helps to protect the real economy.
In retrospect, Mr Dean's great contribution to the Democratic Party was that he succeeded in providing it with both a cheerleader and a safety valve.
In writing the law, Congress included a safety valve and told the EPA to set the mandate to meet "the projected volume available" in the event of a shortfall.
Ari Fleischer, President Bush's spokesman, said the goal of the executive action is to "provide a safety valve" if any national security issues might arise by releasing past presidential records.
CNN: Bush aides move to put hold on some papers of past presidents
He is averaging 13.1 points over his last six games, and he's relishing his role as a safety valve whenever the Knicks' guards encounter obstacles on their way to the hoop.
It was feared that the lake would pour over the top and burst down the valley but fortunately the river gouged out an escape route along the side of the landblock which acted as a safety valve and limited the damage.
In order to stop flood waters overwhelming central London and to save the massive expense of building fresh flood walls and defences, some land could be set aside to act as a safety valve, catching flood waters and storing them until the danger has passed.
That's partly because Britain's labour and product markets are more flexible than many of its neighbours': the labour market has a safety valve in the form of the 1m workers who arrived from central and eastern Europe over the past four years and are now beginning to go home.
It acts as a safety-valve for a country that has an unemployment rate of 20% and no welfare provision.
In other energy news, Federal Reserve Chairman Alan Greenspan told Congress yesterday that shrinking supplies of U.S. natural gas mean the nation must build more gas import terminals to create a "safety valve" that will help stabilize prices.
It's a kind of safety valve for people who want more and can pay for it.
The Blow Out Preventer is off the well which is being controlled by a down hole safety valve.
In the euro's first decade, southern Mediterranean countries enjoyed the benefit of lower interest rates, but they failed to reform their labour and product markets to make their economies more competitive for a world in which they had lost the safety-valve of currency devaluation.
But even this safety valve approach is probably untenable as devices get smaller and sharing becomes more a seamless part of life.
Without this safety valve, generators would overload and begin shutting down to avoid damage, risking a domino effect of a region-wide outage.
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