This is a 4-port piston body for gas analysis equipment and gas distribution systems in pump-valve systems, a key component of
Precision Piston Assemblies and
Multi-Port Piston Units tailored for gas control applications. It works in synergy with Sealed Fluid Direction Control Valves and Sealed Fluid Transfer Pumps (adapted for gas handling) to ensure accurate gas management, featuring an overall disc-like shape with irregular notches on the edge. These notches facilitate installation positioning in equipment or connection with driving devices, ensuring the piston body can be accurately seated and operated in the system. The piston body is equipped with four distinct holes, each having a spire-like protrusion with a sharp top—this design allows precise insertion into corresponding gas pipeline interfaces to ensure connection accuracy, while the sharp top helps form a reliable seal to minimize gas leakage. Made of rubber, it is black with a relatively smooth surface and no complex patterns or decorations; this surface property reduces gas flow resistance and simplifies cleaning and maintenance. Its structural design aligns with the functional precision requirements of Pistons and
Hydraulic Piston Components (for low-pressure gas systems) in high-accuracy gas control scenarios.
Product Features
1. Functions
1)Gas Channel Switching: In gas analysis equipment, different gas types (e.g., standard gas, sample gas, carrier gas) are required for different detection stages. The 4-port piston body can adjust the connection state between each port and gas pipelines through rotation or movement, enabling sequential introduction of different gases and ensuring smooth progress of the analysis process. For example, in gas chromatography analysis, it can switch carrier gas and sample gas into the chromatographic column. This switching function complements the multi-path control capabilities of Micro Sealed Hydraulic Pumps (for precision actuation) and Mini Sealed Valves in gas systems.
2)Gas Distribution: In gas distribution systems, it can distribute input gas to different output pipelines or equipment according to set proportions or flow directions. For instance, in some industrial production lines where compressed air needs to be distributed to multiple pneumatic components, the piston body enables flexible adjustment of gas flow rate and pressure at each outlet. This distribution role supports the efficient operation of Sealed Diaphragm Pumps (for gas pressurization) and related gas-handling components.
3)Gas Isolation and Sealing: When certain gas channels are not in use, the piston body provides isolation and sealing to prevent cross-gas contamination between different gas streams. This ensures the accuracy of gas analysis results and maintains the purity and stability of distributed gas, meeting the strict sealing standards of Hydraulic Piston Components and Sealed Fluid Direction Control Valves in gas systems.
?
2. Required Characteristics
1)High Sealing Performance: Gases are highly fluid and prone to leakage, so the piston body must achieve extremely tight sealing with gas pipeline interfaces to avoid leakage that would affect analysis results or distribution precision. Typically, materials with excellent elasticity are used, and the design ensures tight fitting—consistent with the leak-proof requirements of Precision Piston Assemblies in gas control.
2)Corrosion Resistance: During gas analysis and distribution, the piston body may come into contact with corrosive gases (e.g., sulfur dioxide, chlorine gas). Thus, its material must have good corrosion resistance; common corrosion-resistant materials include polytetrafluoroethylene and fluoroelastomer, ensuring the piston body’s service life in complex gas environments. This resistance complies with the material standards of Multi-Port Piston Units in harsh gas conditions.
3)Low Gas Adsorption: To avoid interfering with gas composition, the piston body material must have low gas adsorption—no adsorption or release of gases—thus preserving the originality of gas samples and the reliability of analysis results. This property is critical for Pistons used in high-precision gas analysis equipment.
4)Dimensional Stability: The piston body must maintain dimensional stability under varying temperature and pressure conditions, without significant deformation due to thermal expansion/contraction or pressure changes. This ensures consistent tight fitting with pipeline interfaces and maintains normal gas control functions, aligning with the manufacturing standards of Hydraulic Piston Components for gas systems.
5)Wear Resistance and Fatigue Resistance: The piston body may need to operate frequently during gas analysis and distribution, so it must have good wear resistance and fatigue resistance to ensure long-term stable operation and reduce sealing failure or functional anomalies caused by wear. This durability meets the service life requirements of
Reciprocating Pistons (for frequent actuation) in gas control systems.
Contact Now