They come with flapper, driptube, and rotary-flow options and are rated at 150 psig. Full ANSI pressure class 150 rating is also available.

They come in standard unit sizes from 0.5 to 20 in. and range in weight from 4 to 230 lb. They are made from a variety of materials including bronze and 316 or carbon steel for the body, carbon steel or ductile iron for lens retainers, and carbon steel fasteners. Indicators also feature gaskets of either neoprene or Teflon and borosilicate lens.

Papailias Inc., 245 Pegasus Ave., Northvale, NJ 07647, (201) 767-4067, papailias.com