Pressure Ratings
FEATURES & BENEFITS
The Flow-Tek Series 19 is a versatile Segmented Ball Valve designed for throttling or on-off applications in various industries including pulp & paper, chemical, power, oil & gas, and mining.
The valve features a characterized ball segment for high rangeability with splined stem connection for precise control, maintenance friendly segment-stem assembly, low friction shaft and thrust bearings for longer life, integral actuator mounting pads, and interchangeable seats.
Valve Body
- One piece body design which offers greater rigidity against fluctuating pipe loads
- Eliminates the leak path associated with two piece body designs
- Available in Flangeless and Flanged ends
Ball Segment
- Carefully designed with characterized V-port to offer rangeability in excess of 300:1, ideal for throttling applications in high consistency pulp services or slurry applications
- Perfectly ground spherical surface with rounded edges ensure lower operating torques for metal seated valves
- Hard coated spherical surface prevents galling
- The segment is carefully designed for optimum flow
- The seat is supported during higher openings to prevent rocking motion and possible failure of the valve
Ball – Stem Connection Seat
- Close-fit splined connection between stem and the segment offers extra strength with no lost motion or dead band
- Perfectly oriented, specially designed shaft pin facilitates self-alignment of the ball segment while simplifying the assembly and disassembly during routine maintenance
Seat
- Available with a metal seat and soft seat
- Directs the flow away from the sealing area
- Pressure energized seat design offers excellent sealing even at very low differential pressures
- Self-aligning seat is independent of external pipe loads and offers excellent sealing even in adverse conditions
- Standard metal seat has hard-faced seat surface with Stellite overlay on 316 Stainless Steel base material
- Standard soft seat design uses Tek-Fil® to maintain exceptional chemical and heat resistance
- Flow-Tek's Tek-Fil® provides higher compressive strength, lower co-efficient of friction, superior abrasion and wear resistance, lower permeability, lower porosity, and reduced cold flow
Bearings
- Stem and end post bearings are low friction and maintenance free
- Made of wear resistant PTFE compound supported by metal fabric or thick walled metal depending on the pressure drop
- Additional thrust bearing on stem collar for high pressure applications eliminates unbalanced axial load for consistent high performance and precision control
