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This valve utilizes a cartridge-type packing design
specifically the W18 and W24 series
GV Series Compatibility: Purpose-built for Weil McLain GV90
ensuring consistent 2-stage firing rates between 5" and 10" water column
while a lower pitch results in poor heat rejection
Grundfos 00525530 Check Valve Assembly 321894-709 This valve utilizes a cartridge-typeThe Grundfos 00525530 Check Valve Assembly is a critical replacement component engineered specifically for UPS26 99FC and UPS26 99BFC series circulator pumps. As a veteran technician knows, maintaining unidirectional flow is vital in hydronic heating and cooling systems to prevent ghost flows and thermal siphoning. This 1 4 inch check valve kit comes as a complete field service solution, including the high durometer gasket, tailpiece, and specialized
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