Since 1994, BuTech has maintained ISO-9001 certification and is now ISO 9001:2008 certified, for guaranteed quality and reliability. Many of the Butech valves and fittings have CRN registration. The requirement for valves and fittings to withstand harsher environments, higher internal and external pressures, more corrosive chemicals and extended length of service life. Manufacturing and assembly processes are subject to rigid quality control procedures including non-destructive testing at appropriate stages to ensure specification compliance on component products. Records are maintained to verify compliance in material procurement, heat treating, and testing. Certification of testing and specification compliance is available upon request.