Our manufacturers are approved and regularly audited for ISO9001 Quality Management System by independent accreditation bodies. Rigid quality control and inspection at all stages ensure our products are reliable and suitable for their intended application. Our valves, copper pipes, and pipe fittings are certified with the WaterMark scheme. Our own-branded products have gained excellent reputations across New Zealand. Every effort is made to ensure that when used correctly in accordance with the stated recommendation, Hallmark products are safe to use and without risk to health.