the 017-500366 offers a field-proven mechanical temperature controller solution that maintains calibration under demanding operational loads without the drift common in lower-tier alternatives

Standardized Connectivity: Utilizes 18W DC power with a 3-prong industrial DIN spade connector for universal controller compatibility

specifically models R364

High-Temperature Durability: Equipped with a Class H coil and EPR seals to withstand thermal stress without premature degradation

Efficient Installation: Modular assembly mounts directly to VG valve bodies (1/2" to 6") using a four-screw flange

Grundfos 99452454 Pump 320788-702 the 017-500366 offers a field-provenThe Grundfos 99452454, model UP15 10B5 TLC, is a single speed bronze circulator pump engineered for peak efficiency in domestic hot water recirculation and open loop heating systems. Designed for 115V operation, this 1 25 HP pump features a 1 2" sweat connection and an integrated digital timer with battery backup, allowing contractors to optimize system runtime based on specific demand patterns. The canned rotor design ensures the bearings are