The Hedland flow meters type H for aggressive environment are nearly identical to high pressure variable area flow meters. The most important difference is the material, which was used to produce the flow meters, that does not react with measured medium and external aggressive environment. The flow meters provide direct reading of flow rate in difficult external conditions.

The Hedland H variable area flow meters are instruments to measure a flow of oil and other petroleum fluids. They are available in versions for water, water-based fluids, phosphate ester fluids and air or other gases. They are very easy to install. The variable area flow meters provide direct reading of flow rate at relative insensitivity of high pressure, impurities, turbulent flow or position in a system.

The EZ-View® variable area flow meters are durable and inexpensive direct reading instruments to measure a flow of oil, water and other liquids. They are very easy to install, and can be operated in any position: vertical, horizontal, inverted, etc., without sacrificing the quality of the measurement. They provide an instant readout of flow rate in closed piping systems. These flow meters are good solution for low pressure hydraulic system.