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Case Studies

HDPV2 Gate Handling Dry, Colored Pigment

Published
January 30, 2018
Case Studies

HDPV2 Gate Handling Dry, Colored Pigment

Published
January 30, 2018
Client:
A printing company
Product Quantity:
Size:
10 in. (254 mm
Application:
Source a slide gate capable of sealing fine powders and also seal against vapors originating from the mix tank directly below. The purpose of the gate is to convey dry pigments from a weigh bin into a mix tank to create liquid ink.

Features:

  • Gate body & material contact areas constructed from 304 stainless steel.
  • Gate’s seals constructed from nylon & PET.

Results:

Special slide gates were required for this application. Because of the solvent nature of vapors created in the mix tank below, it was unacceptable for the sourced valve to feature silicone rubber seals. In addition, all switches and solenoids had to be rated for hazardous duty (NEMA 7/9).

The Vortex HDPV2 Gate met each of these requirements. The gate’s unique “lifting” action of the blade seating into a top-mounted o-ring offers many advantages over traditional knife gate valves that pack and jam material into an end seal. A Class II / Div. 1 pre-wired terminal box was also provided to meet the client’s hazardous duty standards.

Two years after installation, one of the gates was handling red pigment when it experienced a slight blade sticking problem. To solve the issue, Vortex supplied quick exhaust valves that were installed on the gate’s air cylinder actuator to increase the speed of the gate’s opening stroke.


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