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  2. Water timer - Wikipedia

    en.wikipedia.org/wiki/Water_timer

    The solenoid/diaphragm timer uses more battery power throughout the "on" cycle because the solenoid must be actuated the entire time that the water flow is "on". The ball valve timer using the motor and gear actuator only uses more battery power during the few seconds that motor is used to turn the water flow on or off.

  3. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    A trap primer automatically injects water into a trap, maintaining a water seal to keep sewer gas out of buildings. It must be installed in an easily accessible place for adjustment, replacement, and repair. A trap primer, a specialized valve, is usually connected to a clean-water supply in addition to a DWV system. [20]

  4. Hose clamp - Wikipedia

    en.wikipedia.org/wiki/Hose_clamp

    The hose is then fit onto the barb, the clamp expanded again, slid onto the portion of the hose over the barb, then released, compressing the hose onto the barb. Clamps of this design are rarely used for high pressures or large hoses, as they would require unwieldy amounts of steel to generate enough clamping force, and be impossible to work ...

  5. Index of underwater diving: A–C - Wikipedia

    en.wikipedia.org/wiki/Index_of_underwater_diving...

    Underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range between seconds to order of a day at a time, either exposed to the ambient pressure or isolated by a pressure resistant suit, to interact with the underwater ...

  6. Hard suction hose - Wikipedia

    en.wikipedia.org/wiki/Hard_suction_hose

    5-inch (13 cm) flex suction hose with Storz fittings, mounted on an engine. Flexible suction hose (Flex suction or suction hose), not to be confused with hard suction hose in U.S., is a specific type of fire hose used in drafting operations, when a fire engine uses a vacuum to draw water from a portable water tank, pool, or other static water source.

  7. Doing It Right (scuba diving) - Wikipedia

    en.wikipedia.org/wiki/Doing_It_Right_(scuba_diving)

    If gloves are worn in cold water, a large snap is needed. The snaps must be attached to a line clamped about halfway along the cylinder. The upper snap is attached to the line near the neck and close to the tank, and the lower snap to the line that extends beyond the clamp. ¼" braided line and stainless steel hose clamps are standard.