Westlake Pipe Fittings to Exit the CPVC-CTS Product Category View the latest announcements from LASCO Fittings, and contact us if you have any questions May 18, 2022 Dear Valued Customer, In order to best serve our customers and focus on Westlake Pipe and Fittings’, formerly LASCO, core product strengths; we have decided to exit the CPVC-CTS product category