Water pump pliers

Water pump pliers, also known as tongue-and-groove pliers, adjustable pliers, or channel locks, are versatile hand tools designed for gripping, turning, and clamping cylindrical objects such as pipes, nuts, and fittings. These pliers feature a multi-position adjustable pivot mechanism that allows the jaw opening to be varied in discrete steps, accommodating a wide range of workpiece diameters. The jaws are typically serrated and angled at 45 or 60 degrees to provide a secure grip on round surfaces. Common technical specifications include jaw capacity (e.g., 0-50 mm), overall length (e.g., 250 mm, 300 mm), and material (e.g., chrome vanadium steel with induction-hardened cutting edges). Some models include integrated wire cutters or pipe grips for added functionality.

Water pump pliers are essential in plumbing, HVAC, electrical installation, and general maintenance. They are used for tightening or loosening pipe fittings, compression nuts, and galvanized pipes. In electrical work, they assist in gripping conduit locknuts and cable glands. They are also common in automotive repair for fuel lines and radiator hoses. Their self-locking action makes them ideal for repetitive tasks in industrial assembly lines and field service.

Key subcategories include straight jaw pliers, curved jaw pliers, and self-locking pliers. Popular article codes often follow a pattern like WP-250, WP-300, or CH-10, where the number indicates length in millimeters or jaw capacity. Brands like Knipex, Bahco, and Irwin offer models such as Knipex 8603250 or Bahco 8250. The code structure typically includes a prefix for the series and a suffix for size.

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