Honeywell L4006A1009 - High Or Low Limit Aquastat Controller | Cochrane Supply
L6006A1145 RSD Aquastat Controller, Circulator Control and High Limit or Low Limit, 3/8" x 2 7/8" Copper Bulb, SPDT Contacts, Horizontal Mounting, 100-240 Degree Operating Temperature Range, 3" Capillary
Dual Aquastat Controller, Temp. Range High Limit 130° to 240°F, Low Limit 110° to 220°F - Grainger
Circulator Control Low Limit Aquastat Controller W/ 100 F To 200 F 85267176484 | eBay