An angle valve is a compact shut-off and flow-control device used in plumbing systems to redirect water at a 90-degree angle. Its body is typically L-shaped, allowing it to connect a water supply pipe from the wall or floor to a fixture like a faucet, toilet, bidet, or washing machine. The main purpose of an angle valve is to control water locally, so you can turn off water to a single fixture without cutting off the entire household supply.
Internally, angle valves can have different mechanisms — compression, ceramic disc, or ball-type — each offering smooth operation and strong sealing. Their small size, precise control, and convenient placement make them essential in both residential and commercial plumbing installations.
The 90-degree design makes the valve ideal for tight spaces behind toilets, under sinks, and inside cabinets. It allows the connection to sit flush against the wall, keeping hoses neat and organized. This structure reduces bending stress on flexible pipes and prevents leakage caused by improper alignment. It also improves the appearance of the installation, as only the valve’s polished exterior remains visible.
Angle valves provide a convenient local shut-off for maintenance. Instead of closing the main water line, you can simply turn the handle to isolate a specific fixture. This function is especially helpful in multi-room buildings or hotels, where each outlet may need independent control. The valve can also be used to regulate flow, ensuring stable water pressure for sensitive equipment like filters or bidets.
High-quality models are made from stainless steel (SUS304 or SUS316), brass, or lead-free copper alloys. These materials resist rust, oxidation, and mineral corrosion, extending the valve’s lifespan even in humid bathroom environments. Stainless steel types, such as the one shown in the image, are favored for their hygienic properties and modern metallic finish that matches other fixtures.
| Material | Key Benefit | Common Usage |
|---|---|---|
| Stainless Steel (SUS304/316) | High corrosion resistance, clean finish | Bathrooms and kitchens |
| Brass | Durable, easy to machine, cost-effective | Standard household valves |
| Lead-Free Copper Alloy | Safe for drinking water systems | Kitchen and filtration setups |
Most angle valves use a ceramic cartridge or precision ball mechanism, providing effortless quarter-turn control. The hard-sealing surfaces resist wear and maintain tight sealing performance over years of operation. High-end valves include rubber O-rings or PTFE gaskets to ensure zero leakage, even under high pressure or temperature variation.
Modern angle valves combine practicality with a polished appearance. Their minimalistic body lines and brushed or mirror finishes blend with contemporary interior styles. Many models also include engraved markings like “SUS304” to indicate material quality. The ergonomic handle design ensures easy grip even with wet hands, while compact proportions hide most of the valve body inside the wall fitting.
Under a washbasin or kitchen sink, angle valves connect the cold and hot water supplies to the faucet hoses. This setup allows plumbers to perform quick maintenance, replace faucets, or adjust water flow without disturbing other lines. It also simplifies future remodeling work since the valve provides a clear separation between supply and fixture.
In bathrooms, an angle valve controls water flow to toilet tanks or bidet sprayers. The 90° outlet helps direct water neatly behind the toilet, preventing hoses from bending awkwardly. Some models have dual outlets, allowing one supply to serve both the toilet and a handheld bidet simultaneously — a convenient space-saving solution.
Angle valves are frequently used to connect washing machines and dishwashers. They provide a secure and quick shut-off point near the appliance. The strong body and reliable seal can handle higher water pressures typical of automatic washing systems, ensuring no backflow or leakage during operation.
For small water heaters, reverse osmosis systems, or under-sink filters, angle valves provide isolation control during servicing or filter replacement. Stainless steel versions are especially suitable for potable water lines since they resist scaling and maintain water purity.
| Application Area | Purpose of Angle Valve | Benefit |
|---|---|---|
| bathroom faucet | Connects wall pipe to faucet | Easy shut-off during repair |
| Toilet Tank | Controls fill valve supply | Prevents overflow issues |
| Washing Machine | Regulates appliance inlet | Protects hose from burst pressure |
| Water Filter | Provides service isolation | Allows easy cartridge replacement |
In hotels, hospitals, and public facilities, every fixture typically includes an individual angle valve. This ensures quick isolation for maintenance without interrupting water flow to other areas. Models with built-in filters or check valves are preferred in commercial use to maintain water hygiene and prevent backflow contamination.
An angle valve is a compact and reliable plumbing control device designed to redirect and regulate water at a 90-degree angle. It stands out for its space-saving structure, durable stainless or brass construction, leak-free sealing, and convenient on/off control.
From household sinks and toilets to commercial washrooms and filtration systems, the angle valve provides both functionality and aesthetic appeal. Its simple yet effective design makes it an indispensable component in modern plumbing, combining long-term reliability with easy maintenance and clean installation.
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