Dresser Masoneilan®’s Camflex II rotary globe valve has been designed to help customers meet strict environmental emissions standards. Featuring a specially-developed Emissions Free (EF) Seal, the Camflex II valve reduces equipment emissions that can occur at the valve shaft sealing, or packing, particularly after long-term operation. Standard on most Dresser Masoneilan rotary valves, including the Camflex II rotary globe valve, the Dresser Masoneilan EF Seal® is efficiently engineered with few components for suitable sealing functionality. It combines a double O-ring sealed packing follower with low-friction tetrafluoroethylene (TFE)-based packing materials. Additionally, the small-range rotary motion of the Camflex II valve shaft prevents contaminants from entering the packing system and causing damage. By rotating in one place, the motion also protects the stem from atmospheric exposure that can accelerate corrosion. The result is a reduction in packing wear to help avoid emissions. Another standard feature of the Camflex II valve is an integrated extension bonnet that enables the standard TFE packing material to withstand its full temperature range – up to 750F. This prevents additional shaft friction caused by graphite-based materials and helps maintain the control and regulatory compliance characteristics of the Camflex II valve.
