The Double Seat Sampling Valve is designed for hygienic and sterile sampling applications where enhanced cleanability and contamination control are required. Its double-seat construction allows the seat area to be cleaned or sterilized between sampling operations, helping reduce the risk of cross-contamination.
The valve is suitable for installation on tanks, vessels, and process pipelines. It can be operated manually or pneumatically and is designed for applications that require reliable, repeatable, and hygienic sample collection.
一、Product Overview
1.1 Main Function
The Double Seat Sampling Valve is used to collect representative samples from hygienic process systems while maintaining a clean and controlled sampling environment.
The double-seat structure allows the area between the sealing surfaces to be cleaned or sterilized between sampling cycles.
1.2 Valve Construction
The valve typically consists of:
- Stainless steel valve body
- Double-seat sealing system
- Valve stem
- Membrane seal
- Manual handle or pneumatic actuator
- Sampling outlet
- Sterilization or flushing connection
- Process connection
1.3 Operating Modes
The valve can be supplied with:
- Manual operation
- Pneumatic operation
This allows the valve to be used in both manually operated process systems and automated production lines.
二、Product Features
2.1 Double Seat Design
The double-seat construction provides an additional hygienic barrier and enables the seat area to be cleaned or sterilized between sampling operations.
2.2 Hygienic Stainless Steel Construction
Product-contact components are manufactured from SS316L / 1.4404 stainless steel, providing good corrosion resistance and suitability for hygienic processing.
2.3 Enhanced Cleanability
The valve body is designed with smooth product-contact surfaces to help minimize residue accumulation and improve cleaning performance.
2.4 Manual or Pneumatic Operation
Manual handles and pneumatic actuators are available to meet different process and automation requirements.
2.5 Sterilization Capability
The valve design allows the seat area and sampling channel to be sterilized between samples.
2.6 Reliable Sampling
The controlled opening and closing mechanism helps provide repeatable sampling performance for process monitoring and quality control.
三、Technical Specifications
| Item | Specification |
|---|---|
| Product Name | Double Seat Sampling Valve |
| Product Contact Material | SS316L / 1.4404 |
| Seal Material | EPDM / Silicone |
| Surface Finish | Ra ≤ 0.8 μm |
| Max. Working Pressure | 6 bar |
| Max. Working Temperature | 130°C |
| Operation | Manual / Pneumatic |
| Connection | Collared Pipe / Tank / Tri-Clamp |
| Installation | Tank / Vessel / Process Pipeline |
| Sampling Type | Hygienic / Sterile Sampling |
The verified reference product family is available in three valve sizes and can be supplied with collared pipe, tank, or Tri-Clamp connections.
四、Working Principle
4.1 Open Position
When sampling begins, the handle is rotated or the pneumatic actuator is activated.
The valve stem and membrane seal retract, opening the sampling passage and allowing the process medium to flow through the valve.
4.2 Closed Position
When sampling is complete, the valve returns to the closed position and stops the product flow.
4.3 Sterilization Position
The double-seat design allows the outer seat area to be exposed for cleaning or sterilization while the inner seat remains closed against the process medium.
This makes it possible to sterilize the sampling area between samples without opening the process side.
4.4 Repeated Sampling
After sterilization, the valve can be returned to the normal closed position and is ready for the next sampling cycle.
五、Applications
5.1 Food and Beverage
Suitable for hygienic sampling in:
- Food Processing
- Beverage Production
- Liquid Food Systems
5.2 Dairy and Brewery
Suitable for:
- Dairy Processing
- Milk Systems
- Brewery Applications
- Fermentation Processes
5.3 Pharmaceutical and Personal Care
The valve can also be used in:
- Pharmaceutical Processing
- Biopharmaceutical Systems
- Personal Care Production
- Other Hygienic Processes
These application areas are specifically identified in the verified reference product documentation.
六、Available Configurations
6.1 Operation Options
- Manual Handle
- Pneumatic Actuator
6.2 Connection Options
- Collared Pipe Connection
- Tank Connection
- Tri-Clamp Connection
6.3 Seal Options
- EPDM
- Silicone
6.4 Installation Options
- Tank Mounted
- Vessel Mounted
- Pipeline Mounted
七、Advantages
7.1 Improved Contamination Control
The double-seat construction helps isolate the process medium while the sampling area is cleaned or sterilized.
7.2 Better Cleanability
The valve seat and sampling area can be cleaned between samples, helping reduce the risk of product carryover.
7.3 Suitable for Sterile Sampling
The design is especially useful in applications where sample integrity and hygienic conditions are important.
7.4 Manual and Automatic Options
The valve can be adapted to both manual and automated production systems.
7.5 Flexible Installation
Multiple connection and installation options allow use on tanks, vessels, and process pipelines.
八、How to Select
8.1 Confirm the Process Conditions
Check the operating pressure, temperature, product characteristics, and cleaning requirements before selecting the valve.
8.2 Select the Operation Type
Choose manual operation for occasional sampling or pneumatic operation for frequent and automated sampling.
8.3 Select the Seal Material
EPDM or silicone should be selected according to product compatibility and temperature requirements.
8.4 Confirm the Connection
Select the appropriate tank, collared pipe, or Tri-Clamp connection according to the process system.
8.5 Consider Sterilization Requirements
For sterile sampling applications, confirm the required cleaning and sterilization procedure before finalizing the valve configuration.
九、Maintenance
9.1 Routine Inspection
Regularly inspect:
- Valve stem
- Membrane seal
- Double-seat area
- Manual handle or actuator
- Sampling outlet
- Process connection
9.2 Seal Replacement
Replace membrane or seat seals when signs of wear, leakage, or reduced sealing performance are detected.
9.3 Cleaning and Sterilization
Follow the required cleaning and sterilization procedures according to the process and product characteristics.
十、FAQ
10.1 What is a Double Seat Sampling Valve?
A Double Seat Sampling Valve is a hygienic sampling valve with two sealing positions that allow the seat area to be cleaned or sterilized between sampling operations.
10.2 What is the main advantage of the double-seat design?
The main advantage is improved cleanability and contamination control between samples.
10.3 Can the valve be pneumatically operated?
Yes. Both manual and pneumatic operating versions are available.
10.4 What material is used for product-contact parts?
The verified reference configuration uses SS316L / 1.4404 stainless steel.
10.5 What is the maximum working pressure?
The verified product family is rated up to 6 bar.
10.6 What is the maximum working temperature?
The verified product family supports temperatures up to 130°C.
