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Sigma hardware offers an impressive line of luxury faucets. However, we know that fixing a faucet is often much easier than buying a whole new one. Our page offers a wide selection of everything you may need to fix your Sigmatherm Thermostatic valves. With everything from Sigma cartridges and Sigma volume controls to Sigma trim plates, we make it easy to find replacement parts for your Sigmatherm thermostatic valve in order to provide the simplest solution to all of your problems. If you find yourself struggling to figure out what you may need, feel free to contact our experts to guide you to the best replacement parts.