54mm x 19mm Inner Diameter Copper EndFeed Straight Reducing Coupling (Socket Weld) — for Water, Gas, Oil Why this fitting matters Provides a reliable, permanent inline reduction from 54mm inner diameter to 19mm inner diameter using copper construction. Solves the common problem of connecting mismatched pipe sizes without bulky adapters or complex machining. Copper material offers proven corrosion resistance, thermal conductivity, and long service life for plumbing and fluid systems. Key benefits Simple, compact reduction: Straight reducing design keeps runs neat and minimizes pressure loss compared with improvised reductions. Durable and serviceready: Copper construction resists common forms of corrosion in water, gas and oil systems and is compatible with standard copper joining methods. Installation flexibility: Designed for endfeed (socket weld style) installations for a secure, leakresistant joint when joined correctly. Key attributes Size: 54mm x 19mm inner diameter — reduces from a 54mm ID line down to a 19mm ID line in a single fitting. Material: Copper — appropriate for potable water, heating, gas, and oil plumbing where copper is acceptable. Type: End feed straight reducing coupling — inline reducer, straight orientation. Connection style: Socket weld / endfeed style — intended for soldering/brazing or socketstyle joining depending on installation requirements. Functionality: Creates a permanent, sealed transition between two different innerdiameter copper pipes. Compatibility and performance Fits copper pipes with inner diameters of 54mm and 19mm. Suitable for common plumbing, heating, and fluid transfer applications that accept copper fittings. Works with standard endfeed soldering, brazing, or socketweld joining techniques when performed to appropriate installation practices. Typical applications Residential and commercial plumbing: Reduce a main cold or hot water copper line to feed smaller branch lines, fixtures, or appliances. Heating and HVAC systems: Create a stepped connection from a larger supply or line to a smaller circulator or control loop. Fuel and oil lines (where copper is permitted): Transition between pipe sizes in oil supply or transfer systems where copper fittings are specified. Installation notes Use appropriate flux, solder or brazing alloy and follow industry practices for endfeed or socketweld joints. Ensure compatibility with local codes and system materials before use in gas or fuel systems. Ensure pipes are cut square, deburred, and cleaned to achieve a reliable joint. What you get A single copper straight reducing coupling with 54mm ID on one end and 19mm ID on the other, designed for endfeed/socketweld style installation and intended for water, gas, and oil piping applications.