Purpose and Role in Pneumatic Valve Assemblies
The Festo VAME-XA-Z-130 tie rod (part number 8191764) is a structural accessory designed for pneumatic valve assemblies that require secure, precise fastening. With a length of 130 mm and a pack size of 3, this tie rod is intended for applications where multiple rods are needed to maintain alignment and clamping force across valve stacks or manifolds. Its high-alloy stainless steel construction provides the mechanical strength needed for demanding industrial environments, while the moderate corrosion resistance class (CRC 2) makes it suitable for applications with occasional exposure to moisture or mild contaminants.
Material and Compliance Considerations
For engineers and procurement teams working in paint shops, coating lines, or other processes sensitive to silicone-based contaminants, the VAME-XA-Z-130 offers a clear advantage. It meets LABS (PWIS) conformity according to VDMA24364-B1/B2-L, ensuring that the tie rod will not introduce paint-wetting impairment substances into the system. This compliance is critical for maintaining product quality in finishing operations. Additionally, the tie rod is RoHS-compliant, aligning with environmental and regulatory requirements that are increasingly important in global supply chains.
Mounting and Torque Specifications
Precise installation is essential for achieving reliable performance. The VAME-XA-Z-130 features a dual-thread design: an external thread M4 and an internal thread M4, with an internal hexagon size AF 4 for tightening. This configuration allows for flexible mounting options, whether you need to attach the rod to a valve body or connect it to another component. The nominal tightening torque is specified at 1.4 Nm with a tolerance of ±15%. Adhering to this torque range is vital to avoid over-stressing the threads or under-tightening, which could lead to loosening under vibration. The product weight of 80.1 g per rod is modest, contributing to overall assembly weight without adding unnecessary bulk.
Practical Benefits for Maintenance and Downtime Reduction
From a maintenance perspective, the use of high-alloy stainless steel reduces the risk of corrosion-related seizing, which is a common cause of difficult disassembly in pneumatic systems. This material choice, combined with the precision engineering of the tie rod, helps ensure that valve stacks remain securely fastened over extended periods, minimizing the need for frequent re-tightening or replacement. For operations that prioritize uptime, the VAME-XA-Z-130 offers a dependable fastening solution that supports consistent machinery performance.
Selection and Integration Guidance
When integrating the VAME-XA-Z-130 into your system, verify that the 130 mm length matches your specific valve stack height or mounting requirement. The pack size of 3 is convenient for small-scale repairs or for standardizing on a set of rods for a particular assembly. Because the tie rod is a mechanical accessory, it is compatible with Festo pneumatic valves that use M4 threaded tie rods, but always confirm the thread size and length against your valve documentation. For procurement teams, the combination of LABS conformity, RoHS compliance, and corrosion resistance makes this tie rod a versatile choice for a range of industrial sectors, including automotive, electronics, and general automation.