LR Series In-Line Liquid Samplers
RAM Type Piston Samplers for High Viscous Media

Spirare Energy's LR Series In-Line Liquid Samplers are specifically designed for demanding sampling applications involving high-viscosity liquids, slurries, polymers, heavy hydrocarbons, resins, and crystallizing media. Featuring a robust RAM-type piston valve mechanism, the piston physically strokes into the process pipe to break through any crust, sludge layer, or dead-leg accumulation, ensuring a genuinely representative sample.
Operating at media pressures below 8 Bar.g (with high-pressure custom ratings available upon request), the LR Series is available with both soft and metal-to-metal seating. To prevent viscous fluids from solidifying or cooling inside the sampling chamber, systems can be equipped with integrated steam/electrical heating jackets, cooling jackets, or solvent purge flushing stations that clear internal wetted passages post-sampling.
Offered in four purpose-built configurations (LR1 through LR4)—including Purge Type, RAM Purge, Fixed Volume with Thermal Jacketing, and Fixed Volume with Solvent Flushing—the LR Series delivers exceptional reliability, zero clogging, and complete operator safety in chemical, refining, asphalt, petrochemical, and polymer processing facilities worldwide.
Sampler Specifications & Models
Explore complete technical specifications, available options, and the four specialized LR Series RAM-type configurations engineered for high-viscosity process sampling.
Sampler Specifications
High Viscosity LimitsOperating Pressure
Below 8 Bar.g (Standard)
Standard piston systems operate below 8 Bar.g. High-pressure heavy-duty RAM valves available upon request.
Target Fluid Media
High Viscous Media & Slurries
Engineered specifically for polymers, heavy crudes, asphalt, resins, waxes, molten sulfur, and crystallizing fluids.
Valve Mechanism & Seats
RAM Type Piston (Soft / Metal)
Precision ground RAM piston rod with soft (PTFE/PEEK) or metal-to-metal stellite seats for high-temperature and abrasive fluids.
Sizes & Process Connections
1/2", 3/4", 1", Flanged / NPT
Available in 1/2", 3/4", 1" ANSI Class 150/300/600/DIN flanges and female NPT connections. Standard 1/4" OD tube connections.
Thermal Conditioning
Steam / Electric Heating & Cooling
Optional steam jackets, electrical heating blankets, or cooling heat exchangers to maintain fluid viscosity during sampling.
Purging & Solvent Flushing
N2 Inert Gas & Solvent Purge
Dedicated Nitrogen purge manifolds and solvent wash injection ports to clean internal piston clearances and needles.
Options Available & Custom Accessories
Protective Enclosure & Safety Boxes
Weather-proof SS 304/316 safety enclosure with transparent viewing window, door interlock, and drain pan.
Heating & Cooling Thermal Jackets
Integrated steam tracing, hot-oil jackets, or electrical heat tracing to prevent fluid solidification.
Solvent Purge Cleaning Station
Solvent injection port and blowdown circuit to dissolve tacky residues and flush sampling needles.
Metal-to-Metal Piston Seating
Hardened Stellite or Tungsten Carbide seat options for extreme temperature and abrasive slurry services.
Automatic Sampling Actuation
Pneumatic double-acting cylinder actuator with solenoid sequence controller for automated RAM strokes.
High Pressure Viscous Collection Option
Heavy-duty reinforced piston bodies and high-pressure flanges for demanding refinery and chemical lines.

RAM Type Liquid Sampling (LR1 – LR4)
Select an engineered RAM piston configuration tailored for your viscosity range, thermal requirements, and solvent cleaning specifications.
Purge Type Sampling
Direct process takeoff utilizing inert Nitrogen purge flushing through the sample chamber and dispensing needles to clear viscous fluids and eliminate dead-leg stagnation.
Custom engineered skids available on request
| Model | System Type & Description | Flushing / Cleaning Mode | Action |
|---|---|---|---|
| LR1 | Purge Type Sampling Direct process takeoff utilizing inert Nitrogen purge flushing through the sample chamber and dispensing needles to clear viscous fluids and eliminate dead-leg stagnation. | Standard High-Viscosity Purge Sampling Dedicated N2 Inert Gas Needle & Chamber Purging | |
| LR2 | RAM Type Purge Type Sampling Features a robust mechanical RAM piston that advances into the core fluid stream to break through crust or sludge, combined with high-flow Nitrogen purge to clear the nozzle upon stroke return. | RAM Piston Process Penetration + N2 Purge Mechanical RAM Piston Cleaning + Inert Gas Purging | |
| LR3 | RAM Type Fixed Volume with Heating/Cooling Jacket Integrates a calibrated volumetric measurement chamber with full steam/hot-oil heating or glycol cooling jackets and RAM piston stroke, keeping high-temperature or waxing fluids at ideal fluid temperatures. | Thermally Conditioned Fixed Volume RAM Sampling Thermal Tracing Jacket + Calibrated Fixed-Volume Chamber Isolation | |
| LR4 | RAM Type Fixed Volume with Solvent Purging Advanced sampling configuration incorporating an automated solvent injection header to dissolve and wash away stubborn polymers or sticky residues from the piston, chamber, and needles. | RAM Piston + Solvent Injection Flushing Dual Solvent Wash Flushing + High-Pressure N2 Blowdown Purge |
PROCESS APPLICATION CONFIGURATOR
Select your desired application to configure the ideal engineering pathway and receive a tailored quotation.
