TOP CAP with MALE PIPE NPTF (dryseal) -1MP = 1/8" -2MP = 1/4" -3MP = 3/8" -4MP = 1/2"	TOP CAP, NON VENTED -1NV Up to 100 PSI
TOP CAP with FEMALE PIPE -NPTF (dryseal) -1FP = 1/8" -2FP = 1/4" -3FP = 3/8"	TOP CAP with REPLACEABLE 40 MICRON FILTER VENT -FV Available for both diameter sizes.
TOP CAP with COMPRESSION FITTING STRAIGHT TUBE O.D. TUBE -1T = 1/8" -3T = 1/4"	ADJUSTABLE BRASS RING(S) FLUID LEVEL INDICATORS -1RNG = One ring -2RNG = Two rings
TOP CAP with COMPRESSION FITTING 90° TUBE O.D. TUBE -3TA = 1/4" -4TA = 5/16"	SEAL MATERIALS OTHER THAN BUNA N (STANDARD) -2BU = Butyl -3VI = Viton A® -4EP = Ethylene Propylene -5SI = Silicone
TOP CAP with SNAP LID FILLER TOP CAP with THREADED FILLER -1FC -2FC	METAL GAGE PARTS OTHER THAN BRASS (STANDARD) Minimum order qty's may be required. -A = Aluminum
SIGHT MATERIALS OTHER THAN GAGE GLASS (STANDARD) Minimum order quantity may be required. -1PC = Polycarbonate