881 series threaded sight flow indicators from 1/4" to 2" in Cast Iron, Steel or Stainless Steel.
Straight through with spout
Ideal for gravity feed systems, intermittent flow, liquids containing entrained air and low flow rates.
This model has an integral drip lip and can be mounted in any pipeline position.
Rotor
This model has a rotor to show you if the liquid is flowing. The indicator can be mounted in any pipeline position, and the light weight rotors will operate over a wide flow range.
Flap
This model has a flap to show you if the liquid is flowing and is suitable for horizontal and vertically upward flow.