The PV3000 series of environmentally controlled enclosures are designed for seam sealing and other process applications in a specific gas or vacuum environment. PV3000 provides a vacuum or over-pressure process environment (100 mTor to 1.5 atmospheres). PV3000 minimizes consumption of expensive specialty gases with its small chamber size and gas recycling. PV3000 may be integrated with SM8500 or Autoflow sealing systems.