p21 valve

P21 Valve with Inflatable Seal

Gemco Valve’s Inflatable Seal for your critical application

Designed to meet the demanding requirements for containment of solids, powders and slurries, Gemco Valve’s industry leading P21 High Performance valve has been combined with an inflatable seal for bidirectional bubble-tight inflatable sealing at high temperatures even in extremely corrosive and abrasive environments. Engineered for sealing in vacuum and pressure applications, the P21 uses a spherical disc design to wipe material away from the sealing area, eliminating the source of most valve wear.

Gemco Valve has developed and proven the ultimate powder shut off valve for Chemical, Pharmaceutical, Biofuels, Food, Plastics, Aerospace and countless other processing applications. Using proven materials like Hastelloy, Peek and Perfluoroelastomers we address the widest range of severe applications and our contained design protects the seal from abrasive wear.

Click here to receive a complimentary evaluation of your process.


  • Chemical
  • Pharmaceutical
  • Biofuels
  • Food
  • Plastics
  • Aerospace
Your Application

Click on the desired size to view / download PDF drawing with specifications

P21 High Performance Valve
03 inches / 75 mmPDF | 2D.dwg
04 inches / 100 mmPDF | 2D.dwg
06 inches / 150 mmPDF | 2D.dwg
08 inches / 200 mmPDF | 2D.dwg
10 inches / 250 mmPDF | 2D.dwg
12 inches / 300 mmPDF | 2D.dwg
14 inches / 350 mmPDF | 2D.dwg
16 inches / 400 mmPDF | 2D.dwg
20 inches / 500 mmPDF | 2D.dwg
24 inches / 600 mmPDF | 2D.dwg