Pneumatically actuated spring return ball valve with a vented ball eliminates air leaks in vacuum chamber.
Online PR News – 22-June-2012 – Philadelphia, PA – Philadelphia, PA, US, June 21, 2012 -- Leading valve supplier, ValveMan, was contacted by a Fortune 500 manufacturer when the vacuum in one of its chambers that creates silica crystals wasn’t holding. ValveMan discovered air was getting into the chamber through leaks in the ball valves and packing glands. There was also positive pressure in the ball causing a fluctuation in the vacuum.
ValveMan’s solution was to install the ValveMan Brand 3" VMDM2500 pneumatically actuated spring return valve with a NEMA 4 solenoid. It supplied the valve with a vented ball by drilling a hole on the upstream side of the ball so when it was in a closed position and a vacuum was pulled, there was a vacuum in the ball as well. They also fixed the degradation of the packing gland issue by supplying a valve with high quality standards. Happy with the outcome, the Fortune 500 company bought hundreds of the VMDM2500 series valves for their pure silica crystal manufacturing chambers.
Specifications of the VMDM2500 valve include:-
Available in Stainless Steel or Carbon Steel
Body and end are investment case
Self-adjusting stem packing
Blow-out proof stem design
100% air tested under water at 100 psi
Working Pressure ANSI 150
Temperature range: -40˚F to +450˚F
ISO 5211 Mounting Pad
End Cap Type: Flange End (ANSI 150)
Flange Dimension: Face-to-face ANSI B16.10; flange connection ANSI B16.50
Oxygen Cleaned Option
ValveMan is passionate about valves. With extensive application knowledge and deep understanding of valve operation and mechanics, there isn’t a valve problem ValveMan can’t solve. They’ve been solving numerous valve issues since 1965.
ValveMan.com is a leading valve and instrumentation supply company. In business since 1965, ValveMan sources a wide range of manual, electric and pneumatic valves. With state-of-the-art valves from leading manufacturers, ValveMan can resolve leaking packing glands to leaking seats and much more. Serving industries including food processing, pharmaceutical, chemical, power generation and microbreweries, ValveMan is a third-generation family business based on quality, reliability and trust. Visit http://www.valveman.com to see its extensive range and to order valves.
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