All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier

About overflow drainer

Types of overflow drainer

Overflow drains prevent water in a bathtub or sink from spilling over the rim by channeling it through an outlet. Different types of overflow drain fittings are installed on the bathtub or sink to receive water from the overflow channel and direct it to the plumbing system. The types of overflow drain fitting described below are commonly found in bathrooms.

  • Standard overflow drain: An overflow drain fitting for bathtubs and sinks without special features. It consists of a drain body, a drain pipe, and a strainer. The drain pipe connects to the sink or tub overflow channel to collect water that would otherwise overflow. Standard overflow drains are budget-friendly, easy to install, and suitable for most bathtubs and sinks.
  • Hidden overflow drain: An aesthetically pleasing type of overflow drain that is not visible. It is a good choice for undermount sinks. The sink or tub must have a dedicated overflow channel for this kind of drain. A cover plate hides the drain opening, which is usually located on the back wall of the bathtub or sink. Finding and removing the cover plate to clean the strainer is a disadvantage of this kind of overflow drain.
  • Grid overflow drain: A type of grid drain that also works as an overflow drain. The grid pattern on the drain cover prevents debris from clogging the drain and enhances water flow. It is easy to install and clean and comes in various finishes that add style to the bathroom. Like other types of overflow drains, it requires a sink or tub overflow channel.
  • Concealed overflow drain: A modern and stylish type of drain that enhances the look of any bathroom. It is mounted on the front of the sink or tub and has a cover plate that matches the finish of the sink or bathtub. The design of this kind of overflow drain makes it easy to hide plumbing connections.
  • Delayed flow overflow drain: An innovative type of overflow drain that prevents water from quickly escaping during a bath. It has a special valve that controls the overflow and releases it slowly. This kind of overflow drain is perfect for soaking tubs.
  • Pop-up overflow drain: A versatile type of overflow drain that works for both sinks and bathtubs. It has a pop-up mechanism that allows users to open and close the drain easily. The design of this kind of overflow drain adds functionality and style to the bathroom. However, it requires more plumbing work than other types of overflow drains.

Features and functions of overflow drainer

An overflow drain is essential plumbing equipment for any sink or bathtub. It helps prevent overflow by redirecting water to the main drain line. Here are some crucial features and functions of overflow drains:

  • Prevent Overflows

    An overflow drain ensures water does not overflow from the sink or bathtub. If the main drain gets clogged or water fills the sink or tub, the overflow drain redirects the water to prevent spillage.

  • Maintain Hygiene

    An overflow drain helps maintain hygiene in sinks and bathtubs. Without overflow drains, stagnant water would remain in the sink or tub, resulting in a breeding ground for germs and bacteria. Overflow drains ensure all water drains completely, preventing stagnation and promoting hygiene.

  • Protect Walls and Floors

    The overflow drain prevents water from damaging the walls and floors of a bathroom. If water spills over from a sink or bathtub, it can damage walls, cabinets, and flooring. This not only causes physical damage but also leads to mold and mildew growth. The overflow drain redirects excess water, protecting bathroom fixtures and surfaces from water damage.

  • Material Construction

    Overflow drains are made with different materials to ensure longevity and proper draining. They can be made of brass, which is rust-resistant, or stainless steel, a durable and long-lasting option. PVC is also popular for overflow drains in bathtubs due to its lightweight, convenient, and easy-to-install features.

  • Easy Installation

    Installing an overflow drain is a straightforward process. Most overflow drains come with a detailed installation guide that a plumber can easily follow. Proper installation ensures the overflow drain functions effectively.

  • Adjustable Water Level

    Some overflow drains have adjustable water levels. This feature allows users to set water at a comfortable level when filling a tub. An adjustable overflow drain is beneficial for eco-conscious homeowners since it helps save water.

Scenarios of overflow drainer

Overflow drains are common in residential and commercial settings. Some of their major applications include:

  • Residential bathrooms and kitchens: Residential sinks and tubs use overflow drains to prevent water from spilling and flooding. For instance, a sink with an overflow drain will continue draining water through the overflow hole if a user forgets to turn off the tap. In addition, overflow drains in residential bathtubs ensure users enjoy a comfortable soak without worrying about water spillage.
  • Commercial bathrooms and kitchens: Commercial bathrooms and kitchens use overflow drains in sinks and wash areas. The drains minimize the risk of water spillage and flooding in busy wash areas. For example, in busy restaurant kitchens, overflow drains in sinks ensure they can handle multiple orders of dirty dishes without overflowing.
  • Public restrooms: Public washrooms and restrooms install overflow drains to minimize the risk of water spillage. The drains reduce the need for constant maintenance and cleaning, making them suitable for high-traffic areas. The drains also ensure the sinks and urinals are left in a clean and safe condition for the next user.
  • Laboratories: Scientists and laboratory technicians use overflow drains in laboratory sinks to prevent hazardous spills. The drains ensure any hazardous material that spills is contained, preventing environmental contamination. They also minimize the risk of flooding and sink damage, which can lead to the loss of expensive lab equipment.
  • Healthcare facilities: Overflow drains in hospital and healthcare facility sinks and basins minimize the risk of water spillage and contamination. The drains ensure clean and hygienic wash areas for patients and medical staff. The flooded areas can lead to accidents and the contamination of clean and sterile medical equipment.
  • Industrial settings: Many industries, including food and beverage, chemical, and manufacturing industries, use overflow drains in sinks and basins. The drains prevent spillage and contamination of products and materials. For instance, in food processing plants, overflow drains in wash areas ensure large trays and utensils are cleaned without overflowing.

How to Choose Overflow Drainer

Choosing the right type of overflow drainer for sale involves considering various factors to ensure that it will meet the needs of the sink or bathtub in which it will be installed. Here are some of the main factors to take into account when choosing an overflow drain:

  • Type of Sink or Bathtub

    Different types of sinks and bathtubs require different overflow drain types. For example, wall-mounted tubs require a different type of overflow drain than freestanding tubs. It is important to look for an overflow drain that is compatible with the type of sink or bathtub where it will be installed.

  • Drain Size and Connection

    When choosing an overflow drain, it is important to make sure that the drain size and connection are compatible with the existing plumbing. If the sizes or connections are not compatible, it will be impossible to install the overflow drain or it may result in leaks.

  • Material

    Overflow drains are usually made of different materials, such as PVC, chrome, and brass. Consider choosing an overflow drain that is made of a material that will be resistant to corrosion and that will last for a long time. Also, choose an overflow drain material that will match the finish of the sink or bathtub to be installed.

  • Flow Rate

    When buying an overflow drain, it is important to consider the flow rate. Flow rate refers to the amount of water that the overflow drain can handle. Ensure to choose an overflow drain that has a flow rate which is suitable for the type of sink or bathtub it has. Choosing an overflow drain with a low flow rate can result in overflow problems.

  • Maintenance and Cleaning

    Choose an overflow drain that is easy to maintain and clean. This is because some types of overflow drains accumulate debris and hair strands, which can clog the drain. Look for an overflow drain that has features which make it easy to clean and maintain.

  • Aesthetic Consideration

    While functionality is the most important factor to consider when buying an overflow drain, it is also important to consider aesthetics. Choose an overflow drain that is visually appealing and that will complement the aesthetic appeal of the space where it will be installed.

overflow drainer Q & A

Q1: Why are overflow drainers important?

A1: Overflow drainers are important because they prevent overflowing by directing excess water to the overflow channel and drain, ensuring water is drained from the tub and preventing water damage to surrounding areas.

Q2: How does an overflow drain work?

A2: An overflow drain works by channeling excess water from the tub or sink to a secondary drain located near the top of the fixture, preventing water from spilling over the edge. The water is collected in a basin and directed to the main drain.

Q3: What is the difference between a pop-up drain and an overflow drain?

A3: An overflow drain prevents water overflow by draining excess water, while a pop-up drain is a type of sink drain with a removable stopper that can be opened or closed with a mechanism often found in bathtubs and sinks.

Q4: What is a bathtub overflow cover?

A4: A bathtub overflow cover is a small plate that conceals the overflow drain opening. It prevents debris from entering the overflow drain and enhances the aesthetic look of the bathtub by providing a finished appearance.

Q5: What are the disadvantages of an overflow drain?

A5: Disadvantages of overflow drains include the need for proper installation and maintenance, potential for leaks and damage if not properly connected to the plumbing system, and reduced water depth in the sink or bathtub due to the overflow channel.