The Welker FLN Flow Limiting Nozzle puts the brakes on rotor over-speeding to protect your turbine or rotary meter from damage and preserve its accuracy.
Install the FLN downstream of your meter between two raised face flanges to protect against high gas velocities that can occur when pressurizing and blowing down the pipeline and during times of high demand. The FLN helps develop the flow profile of the gas after limiting flow, reducing turbulence and minimizing pressure loss. Each FLN is custom designed for your meter and application, so you can be assured your meter will run within its normal working range.
Over-speeding your meter may be permissible for short durations, but why run the risk? Operating a meter outside of its normal working range can damage the measuring mechanism, negatively affecting the meter’s accuracy and your bottom line. The FLN provides proven cost-effective meter protection. That means less maintenance, more useable gas, and more revenue!
Unlike an orifice plate, the FLN does not create an abrupt restriction or create a permanent pressure loss. With a convergent inlet, short throat, and divergent outlet, the FLN contains and controls the expanding flow to reduce pressure and turbulence. This high recovery design limits the amount of wasted energy so there is minimal pressure loss in the system.
One inch or eight? High pressure or low pressure? Carbon steel or stainless steel? Standard insertion or reverse insertion? Welker customizes every FLN to your meter make and model and process conditions for optimal protection.
The FLN provides excellent over-range protection for your meter. For added meter protection and process automation, install a Welker Oiler. The Oiler automatically delivers a small fixed volume of lubricant to prevent bearing burnout.
|Materials of Construction||Carbon Steel (Standard) or 316/316L Stainless Steel|
|Pipeline Connection||Size: 1", 2", 3", 4", 5", 6", 8", or 12"
Rating: 150, 300, or 600 ANSI RF
|Features||Lifting Eyebolt (for 8" and 12")|
|Stud Bolts and Nuts|