Product Catalog
Pipeline Sampling Valve
Pipeline Sampling Valve (also named Sample Valve) is a special valve installed on process pipelines and equipment. It can collect small representative medium samples safely without dead corners, under non-stop operation and without disturbing the main process flow. It is widely applied to on-line quality inspection and process monitoring in chemical, petrochemical, pharmaceutical, food, energy and other industries.
- Parameters
- Drawing
- Application areas
Structural Composition
Valve Body: Integrated main flow channel and sampling side port, integrally cast or forged, free of dead retention pockets.
Stem / Plunger: Controls flow on-off via lifting or rotation, equipped with double sealing structure to prevent leakage.
Sampling Port: Available with clamp, thread or hose connector, compatible with sampling bottles.
Working Principle
Closed State: Tighten the handwheel counterclockwise, the stem presses down the sealing ring to fully isolate the main channel from the sampling port, leaving no residual medium.
Open State: Loosen the handwheel clockwise, lift the stem to let medium flow from main pipeline into the sampling port; flow rate is adjustable to avoid medium splashing.
Purging Function: Partial models are fitted with purge ports for valve cavity flushing before and after sampling.
Applicable Standards
GB/T 4756-2015, Method for Manual Sampling of Petroleum Liquids
Parameter
| Parameter | Value / Description |
|---|---|
| Size Specification | DN15-DN50 |
| Design Pressure | PN0.6～PN64 |
| Design Temperature | -20℃ ~ 220℃ |
| Connection Type | Flange (GB, HG, ANSI, DIN, GOST standards) |
| Valve Body Material | 304, 304L, 316, 316L, fluorine-lined stainless steel (custom special materials available) |
| Sampling Volume | 50mL–500mL |
| Optional Accessories | Cooler, thermal insulation & heat tracing assembly |
| All data above are for reference only. Please contact us for detailed parameters. | |
Previous: Bottom Tank Sampler
