VL/O-3-1/2-EX VL/O-3-1/4 VL/O-3-1/4-EX VL/O-3-1/4-NPT VL/O-3-1/8-B VL/O-3-1/8-B-EX VL/O-3-1/8-B-NPT VL/O-3-3/4 VL/O-3-3/4-EX VL/O-3-PK-3