Valve Exerciser Articles & Analysis
9 articles found
Choosing the correct relief valve needs preplanning Pressure relief valves protect fire sprinkler system components by relieving excess system pressure from supply surges or temperature changes. Since the 2010 edition, NFPA 13: “Standard for the Installation of Sprinkler Systems” has required pressure relief valves to be installed on all wet pipe fire sprinkler systems. But picking ...
Areas covered were functions of the valve and preventive maintenance steps for the valve in its first year of service. These would include checking and cleaning of the stainless steel strainer, exercising the ball valves, checking for and bleeding air from the pilot system and checking the tightness of all the fasteners, fittings ...
What type and size pipe will the valve be located on? Will the valve be used continuously, intermittent, or momentary? ...
When aging infrastructure is combined with environmental factors the results can be catastrophic; corrosion holes or failing joints and cracks caused by shrinking and swelling of necessary support soils due to significant rain or drought events or extreme temperatures. Failing valves and fire hydrants are a part of the aging infrastructure that will result in a leaking water ...
Whether that brand new control valve in your system is the first one you have ever had to look after or if you are an old hand at valve maintenance with tens of valves in your system, there are a few simple guidelines and reminders for keeping it operating at optimal performance. ...
Because valves are under pressure, care should be taken to bleed the pressure before a valve is taken apart. For example, in a 6-in. valve with 100 psi in the line, at least 2,800 pounds of force is trying to push off the valve cover. Pilot System ShutOff Ball Valves Exercise the main ...
As a note of caution, valves are under pressure and care should be taken to bleed pressure off the valve before taking any valve apart. ...
Weak positive associations were observed for water tower maintenance, valve exercising, and cutting open a water main. Coliform bacteria detections from routine monitoring were not associated with viruses. ...
Manual valve exercising is a time-consuming process, and one that poses risks of injury to employees and damage to valves. Valve-exercising technology is designed to automate the process, so that employees do not subject themselves to the strain of turning large or stuck valves, and so that only ...