Parker PF-00251 Brass 90 Street Elbow 1/4x3/8 Fnpt Mnpt

Product Description

The PARKER PF-00251 is a brass 90-degree street elbow fitting designed to make a right-angle directional change in a threaded pipe assembly. The street configuration combines a female NPT inlet with a male NPT outlet on a single body, eliminating the need for a separate close nipple and reducing overall assembly length. Rated to 1,000 psi, this fitting handles demanding pressure requirements common in compressed air, hydraulic, fuel, and fluid-transfer systems. Its all-brass construction resists corrosion and provides reliable sealing when installed with appropriate thread sealant. Plumbers, HVAC technicians, and fluid-systems mechanics routinely use this type of fitting to complete tight-space runs.

This fitting is suited for residential and light commercial plumbing, HVAC refrigerant-side or fluid-side lines, compressed air distribution, and general industrial pipe assemblies where a compact 90-degree change of direction is required. The 1/4-inch FNPT inlet threads onto a male-threaded pipe or valve, and the 3/8-inch MNPT outlet connects into a female-threaded port or coupling. The package quantity is 5 pieces per pack, making it practical for service trucks and shop stock alike.

Key Features

• 90-degree street elbow configuration combines FNPT inlet and MNPT outlet in one compact body
• 1,000 psi pressure rating suitable for compressed air, hydraulic, and fluid-transfer applications
• Brass construction provides corrosion resistance and durable thread integrity
• 1/4-inch FNPT x 3/8-inch MNPT end connections for direct port-to-pipe transitions
• Eliminates a close nipple in tight-clearance installations
• Sold in packs of 5 for convenient stocking

Compatibility

Designed as a standard NPT-threaded brass street elbow for use in any threaded pipe system requiring a 1/4-inch female inlet and a 3/8-inch male outlet at a 90-degree angle.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified pipefitter following applicable codes such as the IPC or IFGC. Depressurize and isolate the system completely before removing or installing any fitting. Apply an appropriate thread sealant or PTFE tape to the MNPT threads before tightening; do not apply sealant to the first one or two threads. Hand-tighten first, then wrench-tighten to a snug fit without over-torquing, which can crack brass fittings.