Clarke Industrial Engineering (Clarke), the exclusive manufacturer of Shutter Valves, completed a series of independent certifications at National Board of Testing, located in Worthington, Ohio. The Shutter Valve achieved bubble tight shut off (Class 6 zero leakage) at 150PSI and 300PSI. Shell strength passed with zero leakage at 150PSI and 300PSI certification pressures. Torque testing to unseat the mechanism at zero pressure was 50in-lbs. and at 300PSI only an additional 20in-lbs. of torque was required, for a total of 70in-lbs.
The Shutter Valve uniquely offers a combination of zero pressure drop, full piggability, zero flow restriction, precise flow control, negligible turbulence, low water hammer, low cavitation, low noise, ultra-thin footprint, plug & play adaptability, very low power consumption and high long-term reliability.
Kyle Daniels, CEO and president of Clarke, said, “The Shutter Valve has now been certified as the lowest torque, most precise, bubble tight control valve in the world. Due to their inherent geometry, the butterfly valve, ball, globe, plug and gate valves do not have the ability to control flow pressure and volume this precisely and at the same time achieve bubble tight shut-off at 300PSI. This eliminates many of the compromises customers typically face in selecting valves for their applications.”