Parker 4 Welo-wlnl-s Flareless Bite Type Tube Fitting

Product Description

The PARKER 4 WELO-WLNL-S is a metal flareless bite type tube fitting designed for secure, leak-resistant connections in fluid and pneumatic tubing systems. Flareless bite type fittings grip the tube mechanically as the fitting is tightened, eliminating the need to flare the tube end before assembly. This makes them well suited for field repairs and tight-space installations where flaring tools are impractical. Weighing 0.01 pounds, this is a compact, single-piece fitting appropriate for use by licensed plumbers, HVAC technicians, and industrial maintenance professionals working with metal tubing lines.

Flareless bite type fittings are commonly used in hydraulic, pneumatic, and instrumentation tubing applications across both commercial and industrial settings. They are installed wherever a reliable, vibration-resistant tube connection is needed without the added step of tube flaring. Typical install scenarios include equipment lines, control tubing runs, and fluid transfer systems that require a metal-body fitting capable of handling pressure service.

Key Features

• Flareless bite type design grips tubing mechanically — no tube flaring required
• Metal body construction for durability in pressure and fluid service applications
• Compact, lightweight at 0.01 pounds
• Single-piece package quantity — sold individually
• Suitable for hydraulic, pneumatic, and instrumentation tubing systems

Compatibility

Designed as an OEM-style replacement or direct-use fitting for metal tubing systems requiring flareless bite type connections in hydraulic, pneumatic, or instrumentation service.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified mechanical technician familiar with tube fitting assemblies. Depressurize and isolate the tubing system completely before disassembling any fittings. Follow the fitting manufacturer torque and pre-swaging procedures appropriate for the tubing material and outside diameter to ensure a leak-free bite. Verify that the tubing outside diameter and wall thickness are compatible with the fitting before assembly.