Siemens Combustion AGF10.40U Flange 340793-762 The Viessmann 7856004 Pump Head

The Viessmann 7856004 Pump Head is a precision-engineered Grundfos UPS15-78 B1KA replacement designed for high-head hydronic applications

the SC25S is the direct functional replacement for the discontinued SC20C-B6S2 series

The open-type design and integrated lug terminals ensure a secure connection for 120A HVAC contactor installations

It relies on the synchronous motor for the 10-second opening stroke and the internal valve spring for the 5-second closing stroke when power is removed

Siemens Combustion AGF10.40U Flange 340793-762 The Viessmann 7856004 Pump HeadWhen you're rigging up a gas train for commercial or industrial burners, the Siemens Combustion AGF10. 40U Flange is the standard for securing a leak free 1 1 2" NPT connection. Specifically engineered for VGD2 and VKP VL valves, this internally threaded flange allows for precise mounting of double gas valves in high demand combustion systems. As a veteran technician knows, proper flange alignment and a reliable seal are non negotiable for system