ESPAÑOL ENGLISH Legal Notice DISTRIBUTORS     PRESENTATION     ON LINE CATALOGUE     REFERENCES     Contact     Site Map     CHECK VALVES   The check valves or non-return valves should be assambled according to the sense of the fuid. So the ball or the disk will hold the complete back pressure, depending on the model, avoiding the back flow. The quality of the valve and spare part will depend mainly on the fluid characteristics, concentration and operating temperature. TYPES   Design by ISUMTECH © Válvulas Zubi - C/Auzolan, 2B- Bajo -IRÚN- Guipúzcoa [Spain] Tel.: + 00 34 943 635 271 : : Fax: + 00 34 943 635 193