Aluminum Camlock used in outdoor pipes is exposed to the elements, sun, and rain. Over time, it's particularly prone to rust. In severe cases, it can leak fluid and air, not only impacting performance but also requiring expensive replacement. Many people ask if there are ways to reduce rust and prolong its use.
When buying aluminum Camlock, don't just pick any model. Choose a model specifically designed for outdoor use, preferably one with an anti-rust coating. Common options include anodized and electrophoretic coatings. These two coatings create a protective film on the aluminum alloy surface, like a "raincoat" for the joint, protecting it from rain and dew. Their rust resistance is far superior to uncoated versions. Also, pay attention to the joint's sealing rings. Choose ones that are resistant to aging and weathering, such as EPDM. Avoid using ordinary rubber rings. These will harden and crack after a few months of outdoor exposure, allowing rainwater to seep through the gaps and causing rust inside the joint. If your budget allows, you can also choose an aluminum Camlock with a stainless steel lock. The lock is prone to wear and rust, and stainless steel is more rust-resistant than aluminum, reducing the risk of corrosion throughout the joint.
Even if you choose an aluminum Camlock with a rust-resistant coating, it's best to apply a layer of protection before installation, especially to key areas like the joint and lock. You can buy a bottle of aluminum-specific rust inhibitor and spray it on the joint surface and in the gaps between the locks. Let it dry before installation. During installation, avoid direct contact between the aluminum Camlock and the ground or wet brackets. It's best to place a rubber mat on the bracket or secure it with a stainless steel clamp to keep the joint off the ground and prevent water and dirt from clinging to the aluminum Camlock for extended periods. Additionally, after wrapping the aluminum Camlock with Teflon tape, apply a layer of waterproof sealant to the joint where it connects to the pipe. This prevents leaks and prevents rainwater from seeping in, reducing the risk of internal corrosion.
Outdoor aluminum camlocks shouldn't be installed and left alone. Regular inspections are necessary, especially during the rainy season and in coastal areas. Monthly inspections are ideal. First, check the aluminum camlock for white spots or rust. If so, wipe them off with a dry cloth and spray them with a layer of rust inhibitor. If the rust is deep, gently sand it off with fine sandpaper and then apply rust inhibitor to prevent it from spreading. Next, check whether the lock opens and closes smoothly. If it sticks, dust or rainwater may have entered the gap in the lock, causing minor rust. Spray it with lubricant and move the lock back and forth a few times to restore its flexibility. Also, check the sealing rubber ring regularly. If it becomes hard or cracked, replace it immediately. Don't wait until it's damaged to replace it. Otherwise, rainwater may seep in and cause internal rust, which can be a problem.
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