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The SHARKBITE/CASH ACME K518A is a 3/4-inch Evopex push-to-connect end stop designed to cap and close the end of a PEX pipe or compatible fitting. It installs without soldering, crimping, or special tools, making it a reliable choice for fast service work and new installations. Rated to 160 psi maximum pressure and 200 degrees F, the K518A meets the demands of residential water supply systems. The lead-free construction satisfies potable water compliance requirements. Plumbers and pipefitters install this fitting wherever a pipe run must be terminated cleanly and securely.
The K518A is intended for water supply applications using PEX-compatible pipe. Its push-to-connect design is well suited to tight spaces where torch work is impractical or prohibited. Typical use cases include capping off branch lines during rough-in, closing unused ports on manifolds, or temporarily plugging a line during phased construction. The fitting is sold bagged in a package quantity of 6, making it practical for jobsite stock.
Designed for use with PEX-compatible pipe in residential and light commercial water supply systems. Verify pipe outside diameter and system pressure before installation.
Installation is performed by licensed plumbers in accordance with local plumbing codes and the IPC. Shut off the water supply and relieve system pressure before connecting or disconnecting the fitting. Ensure the pipe end is cut square, deburred, and fully inserted to the depth mark before applying load. Do not exceed the rated working pressure or temperature listed for this fitting.
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