Field Controls CK-20FV Gas Fired Water Heater Control KitField Controls CK 20FV Gas Fired Water Heater Control Kit is a reliable, safety focused solution for 30 millivolt gas fired water heaters, pools, and spas. Built to support CAS 4, CAS 4Jr, and CAS 4TMR configurations, this kit delivers trusted ignition control and safe venting monitoring. It is ETL listed for Canada and the US, ensuring compliance across installations. Designed to work with 30 millivolt systems, the CK 20FV provides essential safety

or automation systems to ensure fast

Variable-speed operation for precise airflow and energy efficiency

NC valve with pilot-operated diaphragm for precise control

Electrical: 120V AC (60 Hz) or 110V AC (50 Hz)

this replacement control fits Beckett configurations and supports long-term reliability in both residential and light commercial heating systems

As a genuine Carrier replacement part

OEM-grade construction for reliable performance

Designed for quick service

25 in diameter x 1

and XCV model families and is ideal for DIY repairs or professional service

7 inch diameter

long‑lasting connection that minimizes leaks and downtime