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Product Overview
The SPZ Union Cross fitting (often categorized as the PK or PX series equivalent) is a specialized, four-port push-in connector designed for centralized distribution and merging of pneumatic air lines. This fitting is used to connect four tubes of the same outer diameter (OD) at a central point, making it highly effective for complex, compact air distribution manifolds.
4-Way Air Distribution: Features four equidistant push-in ports, allowing a central junction point to supply four different lines, or to combine four lines into a single circuit (often used in closed-loop or ring systems).
Maximum Connection Density: Provides the highest port density among union fittings (Straight, Elbow, Tee, Y), significantly saving space in control cabinets and on equipment panels.
Instant, Secure Connection: Employs the reliable one-touch, tool-free push-in mechanism, ensuring tubing is locked immediately upon insertion.
High-Integrity Seal: Equipped with internal stainless steel collets for grip and NBR O-rings for a long-lasting, leak-free performance under operational pressure.
Robust Construction: The body is molded from durable engineering plastic (PBT/POM), offering excellent resistance to impact, corrosion, and wear in industrial environments.
Versatility: Suitable for use with common pneumatic tubing materials including Polyurethane (PU), Nylon, and Polyethylene (PE).
Creating centralized distribution blocks or compact manifolds.
Robotics and multi-axis control systems where numerous air lines converge.
Complex pneumatic circuits requiring maximum port density.

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