VALVE TYPES
THE VALVE MOST COMMONLY USED FOR REGULATING/THROTTLING FLUID FLOW.
WHAT IS A GLOBE VALVE
IT IS USED TO MEASURE THE OUTSIDE DIAMETER OF A VALVE STEM.
WHAT IS A VERNIER CALIPER?
THE PART OF A VALVE THAT TRANSMITS FORCE FROM THE OPERATOR TO THE DISC/WEDGE.
WHAT IS THE VALVE STEM?
A ROD THAT IS THREADED ON BOTH ENDS.
WHAT IS A STUD?
THE AREA OR PART OF A VALVE WHERE THE PACKING IS INSTALLED.
WHAT IS THE STUFFING BOX?
THE VALVE USED TO PREVENT FLUID REVERSAL IN A PIPING SYSTEM.
WHAT IS A CHECK VALVE?
THE TOOL USED TO TIGHTEN A VALVES BOLTS IN A FOUR PASS SEQUENCE.
WHAT IS A TORQUE WRENCH?
THE VALVE PART THAT CONTAINS THE VALVE TRIM AND HOUSES ITS INTERNALS.
WHAT IS THE VALVE BODY?
25%, 75%, 100% AND 100%.
WHAT IS A FOUR PASS TORQUING SEQUENCE?
STUFFING BOX I.D. MINUS THE STEM O.D. DIVIDED BY TWO.
WHAT IS THE FORMULA FOR DETERMINING PACKING SIZE?
THE MOST COMMONLY USED VALVE FOR STARTING AND STOPPING FLUID FLOW IN A PIPING SYSTEM.
WHAT IS A GATE VALVE?
THE INDICATOR USED TO MEASURE TOTAL INDICATED RUNOUT OF A VALVE STEM.
WHAT IS A DIAL INDICATOR?
IT IS EITHER BOLTED, THREADED OR UNIONED TO THE VALVE BODY?
WHAT IS A VALVE BONNET?
THE NUMBER OF OF INCH POUNDS IN FIVE FOOT POUNDS.
WHAT IS 60 INCH POUNDS?
THE PROPER STAGGERING DEGREES APART FOR THREE RINGS OF PACKING IN A STUFFING BOX.
WHAT IS 120 DEGREES?
IT TAKES A QUARTER TURN TO OPERATE AND CONTAINS A SPHERICAL OBJECT WITH A HOLE BORED IN IT FOR STARTING AND STOPPING FLOW.
WHAT IS A BALL VALVE?
THE PART OF A VERNIER CALIPER USED TO MEASURE DEPTH?
WHAT IS THE PLUNGER?
THE VALVE PART THAT STOPS FLUID PRESSURE FROM BUILDING AGAINST THE PACKING.
WHAT IS THE BACKSEAT?
THE ABILITY OF A MATERIAL TO DEFORM UNDER LOAD AND RETURN TO ITS ORIGONAL DIMENSION.
WHAT IS ELASTICITY?
THE TOOL USED FOR REMOVING PACKING FROM A VALVE?
WHAT IS A PACKING PULLER?
A VALVE THAT PROTECTS A PIPING SYSTEM FROM PRESSURES ABOVE ENGINEERED DESIGN.
WHAT IS A PRESSURE RELIEF VALVE?
IT IS USED TO RESURFACE THE DISC OF A GATE VALVE.
WHAT IS A LAPPING BLOCK?
THE VALVE PART/PARTS THAT IS USED AS A MATING SURFACE FOR A VALVES DISC/WEDGE.
WHAT IS THE DISC SEAT/SEATS?
IT'S THE NAME OF A CONICAL SHAPED WASHER FOR KEEPING PRESSURE ON A VALVES PACKING GLAND.
WHAT IS A BELLEVILLE WASHER?
IT IS PLACED IN A STUFFING BOX FOR LEAKOFF PROTECTION AND/OR ADDING LUBRICATION.
WHAT IS A LANTERN RING?