The extended Vacuum Port Adaptor (VPA) is specially designed to fit into tight spaces where the regular VPA's won't fit.  If you have a lack of real estate on your endcap but still want to do vacuum leak testing using the VPA, this option could be the solution.  It operates in exactly the same way as our other models with a thumbwheel on top that you screw down onto the Pressure Relief Valve and a connection on the side to attach a hose for vacuum testing or Nitrogen backfilling.  The body of the VPA has been extended and has an OD of just 1.30'' (33.02mm) where it sits up against the endcap.  When vacuum leak testing an enclosure, there is often a loss of vacuum when replacing the vent plug and/or a loss of pressure when backfilling with Nitrogen. This small assembly provides a link between our industry standard, Portable Vacuum/N2 Backfill Kit and a Prevco Dual Seal Pressure Relief Valve. This ensures that a housing can be sealed with an internal vacuum and that any backfilling gas is not mixed with atmospheric air.  The Vacuum adaptor, addresses this by allowing both procedures to be performed through our standard Hi-Pressure, pressure relief valve. The adaptor, temporarily mounts onto our standard PRV and physically opens the PRV poppet while the vacuum is being pulled. The poppet remains open while backfilling with Nitrogen and then closes after use, minimising the possibility of losing first vacuum and then pressure.

Technical Specifications

Features

• Attaches to standard Titanium PRV
• Allows for vacuum and Nitrogen backfill
• Avoids loss of pressure
• Fits into tight spaces when endcap is heavily populated

Components

• Anodized Aluminum shell
• Stainless Steel thumbwheel
• Buna O-rings

Resources

• ICD Drawing
• Part number: 02452-000