3/4" MNPT x 1/4" FNPT Reducer Bushing

Engineered for wet and chemical-heavy vacuum arch environments, this 3/4" x 1/4" NPT threaded hex bushing simplifies line size transitions inside car wash vacuum stanchions. It features a male NPT thread on the outside and a smaller female NPT thread on the inside, allowing site operators to connect pressure sensors, air supply drops, or auxiliary water lines directly into larger vacuum manifold ports. Constructed from cast 304 stainless steel, it stands up to continuous moisture, acidic cleaning chemicals, and high-vibration wash site operations without rusting or degrading.

Key features and benefits include:

• Corrosion Resistance: Formulated from high-grade cast 304 stainless steel to withstand severe wash bay environments, resisting chemical breakdown from acidic detergent prep soaps, alkaline tire cleaners, and continuous water exposure.
• Structural Strength: Class 150 pressure rating (up to 150 PSI WOG) guarantees structural integrity against pressure surges, fluid hammer, and compressed air line spikes in commercial vacuum systems.
• Leak-Tight Tapered Threads: Cut with 3/4" Male NPT external threads and 1/4" Female NPT internal threads, providing a tight, leak-free mechanical seal when mated with standard pipe threads and Teflon tape or thread sealant.
• Compact Step-Down Reducer: Enables smooth, inline size reduction directly inside a manifold or stanchion port without requiring multi-fitting adapter stacks.
• Low-Profile Installation: Fits flush against the female port socket, leaving a tidy, compact footprint inside tight vacuum stanchion enclosures and utility utility boxes.

• Class: 150 lb.
• Grade: 304
• Material: Stainless Steel
• Size A: 1/4" FNPT
• Size B: 3/4" MNPT
• Type: Hex Bushing
• Product Weight: 0.158 lbs.

90 Day Warranty

*Please review our warranty policy here for additional details.