M14x1.5mm & M22x1.5mm Brass Pipe Fittings — Straight, Elbow, Tee, Cross, Coupler Adapters

For M14x1.5mm fittings, the thread diameter is 14mm (approximately 9/16" in imperial terms). Match the fitting type to your line layout — straight for inline connections, elbow for 90° bends, tee for branching, and cross for four-way splits. Reducer variants (e.g., M14 to 1/2") are typically 12.7mm (1/2") on the reduced end. When in doubt, measure your existing fitting's thread outer diameter and pitch before ordering.

Brass fittings of this type are generally rated for low-to-medium pressure applications — typically up to 150–300 PSI depending on wall thickness and fitting geometry. For high-pressure hydraulic systems, please contact us to confirm suitability for your specific operating pressure before ordering.

Brass offers good natural corrosion resistance and is generally suitable for outdoor use in moderate environments. It resists rust and performs well with water, fuel, and oil media. For highly corrosive or saltwater-exposed environments, stainless steel fittings may be more appropriate for long-term durability.

These fittings use metric threads: M14x1.5mm and M22x1.5mm. They are not directly compatible with NPT (National Pipe Thread) or BSP standards without a separate adapter. Always verify your existing port or line thread type before purchasing. Some reducer variants do bridge to nominal inch sizes (1/4", 1/2", 3/4", 1") — check the variant name carefully.

These letters indicate the gender of each port: M = Male (external/protruding thread) and F = Female (internal/recessed thread). For example:

• MF — one male port, one female port (straight or elbow)
• FMM — one female and two male ports (tee or Y-piece)
• FMMM — one female and three male ports (cross)
• FF — both ports female (coupler)

Match the port genders to your existing line ends to avoid needing additional adapters.

Yes, brass is generally compatible with petroleum-based fuels, lubricating oils, and hydraulic fluids in low-to-medium pressure systems. It is not recommended for acetylene or certain aggressive chemicals. Always confirm media compatibility with your system's specifications and pressure requirements before installation.

For most fluid or gas line applications, applying PTFE (Teflon) tape or a thread sealant compound to the male threads is recommended to ensure a leak-free seal. Straight-thread fittings with O-ring face seals may not require tape — check your specific variant and installation requirements. Always follow the torque specifications for brass to avoid cracking.