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Probes are sold separately to allow for custom length selection based on tank depth
Precise LP Calibration: Specifically sized for liquid propane applications to ensure optimal BTU output and clean combustion
boiler reservoirs
the TH109-009 provides the heavy-duty reliability required for mission-critical environmental control without the complexity of digital interfaces
Watts 0383021 Valve Freon Probes are sold separately toThe Watts 0383021 is a high capacity ASME Section IV safety relief valve designed specifically for commercial hot water space heating boilers. This Watts 740 series relief valve features a 1 1 4 inch NPT female inlet and an expanded 1 1 2 inch NPT female outlet, engineered to decrease discharge velocity and prevent potential backpressure issues within the return line. With a factory set relief pressure of 35 PSI and a certified steam discharge
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