APV Sampling valves
Sampling Valves
AxFlow UK supplies APV hygienic sampling valves for taking representative product samples directly from tanks and process pipelines in food, dairy, beverage, brewing and pharmaceutical applications.
The APV PR2 sampling valve is designed to support hygienic sample collection while reducing the risk of contamination. Manual, pneumatic and steam-sterilisable configurations are available to suit different process and hygiene requirements.
As APV's exclusive UK distributor, AxFlow can help select the correct sampling valve around your product, line size, pressure, temperature, CIP/SIP requirements and method of operation.
What is a hygienic sampling valve?
A hygienic sampling valve allows a controlled sample of process fluid to be removed from a tank or pipeline for testing without unnecessarily exposing the main process to contamination.
Samples may be taken for:
- Quality control
- Product identification
- Microbiological testing
- Batch verification
- Laboratory analysis
- Process monitoring
Sampling valves are commonly used in food, dairy, beverage and pharmaceutical processes where product quality and hygienic handling are important.
APV PR2 vs PRD2
| Requirement | APV option |
|---|---|
| Standard hygienic sampling | PR2 |
| Manual sampling | PR2 manual version |
| Automated / pneumatic sampling | PR2 pneumatic version |
| Steam sterilisation required | PRD2 |
| Position feedback required | Pneumatic PR2 configuration |
The PRD2 adds a steam connection for sterilisation and should be considered where a higher level of hygienic control is required.
Why choose an APV sampling valve?
Key benefits of the PR2 range include:
- Hygienic stainless-steel construction
- Sampling directly from tanks or pipelines
- Manual or pneumatic operation
- CIP-compatible design
- PTFE shaft construction
- Reduced internal product retention
- Steam-sterilisation option with PRD2
- Position-feedback options
- Straightforward maintenance
When should you use a sampling valve?
A dedicated hygienic sampling valve should be considered when samples need to be taken regularly while maintaining process cleanliness.
Typical applications include:
- Milk and dairy products
- Beer and beverages
- Liquid food products
- Pharmaceutical liquids
- Personal-care products
- Hygienic tanks
- Process pipelines
Why choose AxFlow for APV sampling valves?
AxFlow is APV's exclusive UK distributor and supports customers with sampling-valve selection, genuine APV spares and technical support.
For an initial assessment, send us:
product • line size • pressure • temperature • manual or pneumatic operation • CIP/SIP requirements
High specification hygienic APV Sampling Valves from AxFlow supported by a network of nationwide technical centres
FAQ Sampling Valves
When should I choose a steam-sterilisable sampling valve?
A steam-sterilisable valve is useful where the sampling point must be sanitised between samples or where contamination control is especially critical. AxFlow’s APV literature identifies the DELTA PRD2 as a version with a steam sterilisation connection, making it suitable for more demanding hygienic sampling duties.
How does sampling valve location affect hygiene and sample quality?
Poor positioning can create dead legs or allow residual product to remain around the sampling point, increasing contamination risk. The valve should be installed where it can drain effectively, be cleaned properly and take a sample that reflects the main process stream rather than trapped or static product.
What causes a sampling valve to leak or drip after closing?
Common causes include worn sealing surfaces, product deposits, damaged valve cones or incorrect actuator operation. In hygienic applications, crystallising or sticky products can prevent full closure, so effective cleaning and periodic inspection are important for maintaining reliable shut-off.
How should a sampling valve be cleaned between samples?
Cleaning requirements depend on the product and hygiene risk. The sampling chamber and product-contact surfaces should be fully exposed to the cleaning or sterilisation process, with particular attention paid to drainability and avoiding retained product. Where contamination risk is high, a valve designed specifically for CIP or SIP should be considered.
How does sample volume affect valve selection?
Required sample volume and sampling frequency can influence valve size and actuation method. Small laboratory samples may favour precise, controlled opening, while larger or more frequent samples may require a valve that can deliver repeatable flow without disrupting the main process.
