Product Catalog
Closed Liquid Sampler
The Liquid Closed Sampler is a dedicated sampling device for working conditions in chemical, petrochemical, oil & gas, environmental protection and other industries. It collects process liquids, corrosive liquids, volatile, toxic, flammable, high-temperature and high-pressure liquid media in a fully enclosed, leak-free manner.
- Parameters
- Drawing
- Application areas
Working Principle
It adopts closed-loop circulation and purging design. Connect the borosilicate glass bottle to the sampling system. Circulate to displace residual liquid in pipelines first, then perform fully enclosed sampling. After sampling, the pipeline can be purged with nitrogen to eliminate residual liquid discharge.
Structural Composition
Cabinet：Constructed from 304 or 316L stainless steel, available in cabinet type or panel type, with protective and explosion-proof performance.
Core Components：Borosilicate glass bottle, needle valve, dual sampling needle assembly, pressure gauge, thermometer, filter, vent/purge port, cooling/heating module (optional).
Applicable Standards
GB/T 4756-2015, Method for Manual Sampling of Petroleum Liquids
Main Features
Eliminate risks of medium volatilization, leakage and operator exposure.
Safe & Fully Enclosed: Zero leakage during the whole process, suitable for toxic, hazardous, flammable and explosive liquids.
Authentic Sample Quality: Circulation purging and displacement prevent residual contamination of samples.
Easy Operation: The dual needle assembly for glass bottles allows fast installation and removal.
Wide Adaptability: Applicable to wide temperature and pressure ranges. Optional accessories include cooling/heating modules, booster pumps (for insufficient pressure differential) and pressure reducing valves (for high-pressure service).
Structure & Connection Parameters
Process inlet & outlet connections: DN15/DN20/DN25, available with flanges complying with GB, HG, ANSI, DIN, GOST standards or ferrule fitting connections.
Purge connection: N3 (for nitrogen or compressed air supply at 0.4～0.6 MPa).
Discharge connection: Vent / flare connection (optional).
Parameter
| Parameter Item | Standard Value |
|---|---|
| Applicable Medium | Liquid, mixed liquid (especially suitable for flammable, explosive, toxic and highly corrosive media) |
| Design Pressure | 0 ~ 20.0 MPa (Inlet-outlet pressure differential ≥0.01 MPa; booster pump to be equipped if insufficient) |
| Sampling Temperature | -20 ~ 450°C (Cooler matched for high temperature, heater matched for low temperature) |
| Sampling Volume | 100/300/500mL (Common sizes: 300/500mL) |
| Cabinet Material | 304 stainless steel, 316L stainless steel |
| Sampling Bottle Material | Borosilicate glass bottle; 304 / 316L stainless steel sampling cylinder as optional |
| All data above are for reference only. Please contact us for detailed parameters. | |
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