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F-1031, Section 2115
Tank to Pump Valve
The tank to pump valve is a full-flow 3-1/2 inch diameter
ball valve which is attached directly to the pump.
Overheat Protection Manager (OPM)
The Overheat Protection Manager (OPM) acts as a safety
device by releasing hot water to the ground or back to the
water tank from the discharge area of the pump.
CS Pump with C20 Transmission