Aquastat, Aquastat Material Bimetal, Stainless Steel, Compatible Pipe Material Copper, Compatible Pipe Size 1/2 in, Compatible with Brand Bell and Gossett, Compatible with Grainger Part Number 312K40, 3NVG8, 4RD06, 4RD07, 4RD09, 4RD10, 4RD12, 5JPA6,...