Pentair COM Port Expansion Module with 1' Cable | IntelliCenter | 520818 C8416 When replacing the bypass valve

When replacing the bypass valve

The Ocean Blue 140020 professional heavy duty leaf skimmer head has a sturdy and high strength gold aluminum handle and molded plastic-wrapped teardrop shaped aluminum frame with a strong mesh net

Astral) or 8 full (Sta-Rite

that is a known typographical variant of 18219R0100 — both refer to this same cartridge

Pentair COM Port Expansion Module with 1' Cable | IntelliCenter | 520818 C8416 When replacing the bypass valveThe Pentair COM Port Expansion Module (520818) is the OEM communication port expansion component for the Pentair IntelliCenter pool and spa automation control system, supplied with a 1' cable. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED This is a mains voltage electrical control component. Installation or replacement must be performed by a qualified electrician or certified pool technician. Do not attempt to install this component without