Orange Research Incorporated: differential pressure instruments
The company’s explosion-proof differential pressure instruments are designed to provide positive protection in explosive environments containing hazardous vapors, gases, or particulates. They are available in indicator/switch and switch-only models, and in pressure ranges from 0- to 5-in. of water to 0- to 100-psid. Maximum line service is up to 5,000 psig, it says.
— Orange Research Incorporated