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The AQUALINE BCA-125 is a threaded brass cap designed to seal off pipe ends in plumbing, pool, and irrigation systems. It threads onto male-threaded pipe ends to provide a secure, pressure-resistant closure. The cap is machined from brass, offering corrosion resistance suitable for water service applications. At 1.25 inches, it fits standard NPT pipe fittings of that size. Weighing 0.52 pounds, it is a solid, durable fitting appropriate for both new installations and service work. Licensed plumbers and pool service technicians are the primary installers for this type of fitting.
This cap is suited for residential and light commercial plumbing applications where a pipe end must be capped off temporarily or permanently. Common use cases include capping unused branch lines, isolating sections of a system during service, or finishing a rough-in where a fixture has not yet been connected. It is also used in pool and spa plumbing where threaded fittings are standard for equipment connections and winterization procedures.
Designed as an OEM-style replacement or service fitting for 1.25-inch NPT male-threaded pipe ends in plumbing and pool systems.
Installation should be performed by a licensed plumber or qualified trade professional in accordance with local plumbing codes. Shut off water supply and relieve system pressure before removing or installing any threaded fittings. Apply thread sealant tape or pipe dope to the male threads before threading on the cap to ensure a leak-free seal. Do not overtighten, as excessive torque can crack brass fittings or damage threads.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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