Gate Valves Selection Guide: Types, Features, Applications
WEBGate valves are usually divided into two types: parallel and wedge-shaped. The parallel gate valve uses a flat disc gate between two parallel seats, upstream and downstream. Shut-off is obtained by the free-floating seat or disk gate allow the upstream pressure to seal the seat and disk against any unwanted seat leakage.
Bolts Selection Guide: Types, Features, Applications - GlobalSpec
WEBA bolt is a type of threaded hardware fastener that is used to position two workpieces in specific relation to each other. Bolts come in several configurations for their application and specification variances. Since the terms "bolt" and "screw" were in use before the advent of easily-produced helix fasteners, they are often synonymous.
Motor Circuit Breaker Sizing Calculator | GlobalSpec
WEBPout=mechanical power output. PF=Power factor. V=Line voltage. E=The efficiency of the motor. Keep in mind that this circuit breaker sizing only considers motor overload, which happens when the operation of a motor (in excess of its normal, full-load rating) persists for a long enough time that it damages or overheats the motor.
Laboratory Tongs Selection Guide: Types, Features, Applications ...
WEBLaboratory tongs are large pincers for grasping and lifting vessels of heat-resistant material used in high temperature chemical reactions. Tongs differ in shape are designed to pick up laboratory items including, hot evaporating dishes, beakers, crucibles, and other laboratory apparatuses. The main type of laboratory tongs are Crucible tongs ...
Screws Selection Guide: Types, Features, Applications - GlobalSpec
WEBA cone point is very sharp and will provide an accurate pilot for threading. Type-A points are best utilized as replacement screws or with predrilled holes in thin metals. Type-B points are similar to Type A, but are meant for thick metals. Type-AB combines the precision point of Type A with the ruggedness of Type B.
Water Quality Testing Instruments Selection Guide: Types, Features ...
WEBWater quality testing instruments are used to test water for chemical and biological agents, and to measure variables such as clarity and rate of movement. These instruments provide a standard tool that can be used to collect information from various water sources. Water quality testing instruments can monitor water temperature, dissolved ...
Worms and Worm Gears Information - GlobalSpec
WEBWorms and worm gears are gear sets that offer high gear reduction and torque multiplication with a small footprint. A worm drive is a cylindrical gear with a shallow spiral thread that engages the worm gear in a non-intersecting, perpendicular axes configuration. Efficiency of a worm drive is determined by the lead angle and the number of ...
Spur Gears Selection Guide: Types, Features, Applications
WEBSpur gears are simple, easily manufactured gears and are usually the first choice when exploring gear options. Transmitting power between parallel axes, the teeth project radially on the disc. The sole variance in their identity remains the rack, which is covered more in-depth in Engineering360's Rack and Pinion Specification Guide.
Heat Exchangers Selection Guide: Types, Features, Applications
WEBPlate coil or panel coil heat exchangers are a hybrid of tube heat exchangers and plate heat exchangers. They consist of coils of tube containing a heat transfer fluid connected or adjacent to a plate, panel, or wall which holds another fluid. These devices are relatively inexpensive and simple to maintain since the coils can be easily removed.
Washers Selection Guide: Types, Features, Applications - GlobalSpec
WEBOther Common Types : Flat washers, also referred to as Type A plain washers, are thin, flat, and circular general-purpose washers with a centrally located hole. Standardized flat washers may be designed by the use of imperial or metric dimensions. Standard imperial washers include SAE washers, for use with fine threaded nuts and bolts, and USS flat washers, for use with coarse threaded bolts ...