The VREL® is also cleanable in place. Both of these design factors provide the advantages needed for consistent sample conditioning. Adjustable When source pressures change, such as at startup and shutdown, the VREL® can be easily adjusted to allow continuous monitoring under all pressure conditions. Heavy-duty speed handle Cleanable in Place Since corrosion products, scale, and other foreign matter often find their way into sample lines, plugging of the pressure reduction valve is common. This is particularly true of Labrynth-type (Drag) valves, and diaphragm-operated high pressure regulators. If these valves plug, the sample line must be shut down while the valve is removed for cleaning or replacement. If the Sentry VREL® plugs with solids, the rods can be fully retracted and the obstruction blown free without disconnecting any lines. The analyzer can be returned to service in minutes by operating personnel. 1.10.1 Rev. 17 08/12 Extended-body design eliminates possibility of bent tubes