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The CAMCO MFG 36103 is a plastic blow out plug designed to clear water lines in recreational vehicles before winter storage or extended periods of non-use. The plug threads into the city water inlet port, allowing a standard air compressor or hand pump to pressurize the plumbing system and push residual water out through open drains and faucets. Constructed from durable plastic, this plug is a compact, lightweight winterization tool sold in a package of 6 units. It carries a patented design and is a standard item for seasonal RV service routines.
This blow out plug is used during RV winterization to remove standing water from fresh water lines, preventing freeze damage to pipes, fittings, valves, and faucets. The typical install scenario involves a service tech or knowledgeable owner threading the plug into the exterior city water inlet, opening all faucets and low-point drains, then connecting a compressed air source to purge the lines. This process is commonly performed at the end of the camping season in climates where freezing temperatures are expected.
Designed as a standard winterization fitting for RV city water inlet ports. No specific vehicle or system compatibility data was provided in the product input.
Installation is typically performed by an RV service technician or experienced owner. Before attaching the blow out plug, shut off the fresh water pump and ensure the water heater bypass valve is set to bypass position to protect the tank. Thread the plug into the city water inlet by hand, then connect a compressed air source and open faucets and drains one at a time to clear each line. Do not exceed the pressure rating of the RV plumbing system — consult the vehicle manufacturer guidelines before applying air pressure.
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