This hot ceramic cartridge with an internal check valve is from T&S Brass. The cartridge does not have a bonnet. Fits all T&S faucets. Cartridge is certified to NSF 61 – Section 9 and NSF 372. T&S Brass part number 011311-25.
EC Part Number: #65943
Manufacturer Number: 011311-25
Manufacturer: T&S Brass