Prevost PPS1UN25 1-Inch Aluminum Union Pipe Fitting for Compressed Air Piping Systems

The Prevost PPS1UN25 is a 1-inch aluminum union fitting designed for use with the Prevost Piping System (PPS) — a modular, 100% aluminum compressed air distribution network. This union fitting enables straight inline connections within PPS pipe runs, allowing sections of pipe to be joined, disconnected, and reassembled without disturbing the rest of the system.

Built entirely from lightweight, corrosion-resistant aluminum, the PPS1UN25 is engineered for industrial compressed air, vacuum, and nitrogen distribution applications. It features Prevost's PPS Grip Concept — a stainless steel toothed ring that bites into the aluminum pipe for a secure, leak-free mechanical hold without the need for threading or welding.

Key Features:

• Pipe size: 1 inch (25 mm) outside diameter
• 100% aluminum body and nut construction for lightweight durability
• PPS Grip Concept: stainless steel toothed ring provides secure pipe retention
• Dual Teflon-coated lobe seal for optimized leak-tight performance
• Operating pressure: 0 to 232 PSI
• Vacuum capability: up to -29 inHg (98% vacuum)
• Temperature range: -4°F to 176°F (-20°C to 80°C)
• Compatible with Prevost PPS1 series aluminum pipe and fittings
• Quick and easy tool-free installation; can be pressurized immediately after assembly
• Meets ASME B31.3 and REACH standards

The Prevost PPS1UN25 is ideal for industrial workshops, manufacturing facilities, and any application requiring a reliable, modular compressed air distribution network. As part of the broader PPS system, it integrates seamlessly with PPS elbows, tees, reducers, and other fittings for a complete air distribution solution.