EXAMPLE

20 S U 4 S S S | | | | | | | DIAL SIZE PRODUCT TYPE OPTIONS CONNECTIONS PRESSURE INLET THREAD SIZES RANGE DESIGNATION PRESSURE RANGE SCALE OPTION

DIAL SIZE

15：1.5”(40mm)DIAMETER DIAL SIZE 20：2.0”(50mm)DIAMETER DIAL SIZE 25：2.5”(63mm)DIAMETER DIAL SIZE 30：3.0”(76mm)DIAMETER DIAL SIZE 35：3.5"(88mm)DIAMETER DIAL SIZE 40：4.0"(100mm)DIAMETER DIAL SIZE 45：4.5“(113mm)DIAMETER DIAL SIZE 60：6.0”(150mm)DIAMETER DIAL SIZE

PRODUCT TYPE OPTIONS

A:Steel black case, steel black bezel, glass window, brass internal and connection dry B:Brass polished case, screw in polycarbonate window, brass internal and connection, dry C:Steel chrome plated case, steel chrome plated bezel, plastic window, brass internal and connection,dry D:Steel black case, steel black bezel, plastic window, brass internal and connection dry E:Steel chrome plated case, snap on plastic window, brass inside and connection,dry F:Steel chrome plated case, screw in polycarbonate window, brass internal and connection, dry G:Steel gold plated case, screw in polycarbonate window, brass internal and connection, dry H:Stainless steel case, stainless steel roll ring (or bayonet threaded ring), polycarbonate window,stainless steel internal and connection, liquid filled Y:Steel black case, chrome plated bezel, plastic window, brass internal and connection dry S:Steel black case, snap on plastic window, brass internal and connection, dry T:Steel black case, screw in polycarbonate window, brass internal and connection, dry P:ABS case, snap on plastic window, brass internal and connection, dry U:ABS case, snap in plastic window, brass internal and connection, dry R:Plastic case, screw in polycarbonate window, brass interal and connection, dry Q:Steel black case, steel black bezel, glass window, stainless steel tube and mechanism, steel chrome plated socket and connection,dry (Ammonia service) J:Stainless steel case, stainless steel bezel, glass window, stainless steel internal and connection, dry M:Stainless steel case, stainless steel bezel, glass window, brass internal and connection, dry I:Black steel case, stainless steel roll ring, polycarbonate window, brass internal and connection liquid filled K:Stainless steel case, stainless steel roll ring, polycarbonate window, brass internal and connection; liquid filled L:ABS case, plastic welded window, brass internal and connection,liquid filled O:Steel black case, steel black bezel, plastic window, brass internal and connection, dry, with steel chrome plated gas test boby (Ges test gauge) W:Steel black case, snap on plastic window, brass internal and connection, dry, with brass water hose(Water test gauge) X:Steel case, steel bezel, glass window, brass internal and connection, dry , with rubber hose or ABS case,snap on plastic window,brass internal and connection,dry, with ABS air valve (Tyre pressure gauge) V:Flre extinguisher pressure gauge Z:(Magnetic) Electric contact pressure gauge

CONNECTIONS

L：LOWER MOUNT CONNECTION B：CENTER BACK CONNECTION R：LOWER MOUNT CONNECTION WITH BACK FLANGE V：CENTER BACK CONNECTION WITH FRONT FLANGE U：CENTER BACK CONNECTION WITH U-CLAMP F：LEFT CONNECTION G：RIGHT CONNECTION H：HIGHER CONNECTION

PRESSURE INLET THREAD SIZES

2：1/2" NPT；2B：I/2”BSP：2Z:I/2" BSPT THREAD SIZE 4：1/4" NPT；4B：I/4"BSP：4Z:I/4"BSPT THREAD SIZE 8：1/8" NPT；8B：I/8" BSP：8Z:I/8" BSPT THREAD SIZE 3：3/8" NPT；3B：3/8" BSP：3Z:3/8" BSPT THREAD SIZE 5：5/16" NPT；5B：5/16"BSP：5Z:5/16" BSPT THREAD SIZE 7：7/16" NPT；7B：7/16”BSP:7Z:7/16 " BSPT THREAD SIZE X：None of the above(please details)

RANGE DESIGNATION

P：Gauge is scaled in pressure value only． V：Gauge iS scaled in vacuum value only． C：Both pressure and vacuum(compound)values．

PRESSURE RANGE

DENOTES FULL SCALE RANGE IN PSI MEASUREMENT -15PSI-0，0-15PSI，0-30PSI，0-60PSI．0-1 50PSI，0-160PSI．0-200PSI，0-300PSI，0-400PSI，0-600PSI，0-1000PSI， 0-1500PSI，0-2000PSI．0-3000PSI，0-4000PSI，0-5000PSI，0-6000PSI．0-7500PSI．0-10000PSI

SCALE OPTION

X：DENOTES DUAL SCALE,FOR EXAMPLE,PSI AND METRIC.} W：DENOTES GAUGE CLEANED FOR GASEOUS STEAM,OXYGEN,HYDROGEN,CARBON DIOXIDE AND ACETYLENE,AMMONIA SERVICE R：REFRIGERATION SCALE SUCH AS FEON SERVICE.