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LS200 Direct Operated Regulator
Featured Product

LS200 Direct Operated Regulator

Fisher LS200 self operated regulator are ideal for district stations or high capacity industrial applications such as driers, furnaces, boilers or burners. The LS200 is a large capacity, balanced port with optional integral slam-shut. Ease of maintenance was the primary goal in this product development.
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What is a regulator for?

What is a regulator for?

Before the invention of pressure reducing valves, controlling pressure was labor-intensive. William Fisher's invention made modern conveniences like gas heating and water flow possible. Fisher's legacy is evident in Emerson Fisher products used in industries worldwide, from oil & gas to food & beverage.
Self Operated Regulators

Self Operated Regulators

Direct operated regulators are the simplest style of regulator. At lower pressures (below 1 psig) they can have very accurate control. At high pressures (up to 500 psig) 105 - 20% is typical. 
In operation, a direct operated pressure regulator senses the downstream pressure through either internal pressure registration or an external control line. this downstream pressure opposes a spring which moves the diaphragm and calve plug to change the size of the flow path through the regulator. 

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Pilot Operated Regulators

Pilot Operated Regulators

Pilot operated regulators are preferred for high flow rates or where precise pressure control is required. 
Typically used in larger line sizes and very common for natural gas applications.
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Pressure Relief / Backpressure

Pressure Relief / Backpressure

A pressure relief valve is used to limit pressure build-up (i.e., prevent overpressure) at its location in a system. The relief valve opens to prevent a rise of internal pressure
in excess of a specified value. Pressure relief valves can be direct-operated or pilot-operated.
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Regulator Services

Fisher OEM Repair Services
Fisher OEM Repair Services
Supporting the maintenance and repair of your regulators with OEM repair parts and expertise.
Shutdowns Turnarounds and Outages
Shutdowns Turnarounds and Outages
Leverage our proven process to accurately determine scope, plan work and streamline execution.
Site Evaluation and Walkdown
Site Evaluation and Walkdown
Work with our experts to evaluate and walkdown your regulators. Better data means better planning, scheduling, and inventory optimization.
Education Services
Education Services
Train new hires, improve workforce skills, and learn about new technology.