Gorter’s ZV-C and ZV-O test valves have been particularly developed in petrol stations for safety shut-off valves. The ZV-C model has been closed spring by spring whereas the ZV-O is open spring by spring. Both instruments can be used in slam shut valves as both blowout valves and bypass valves to balance the pressure. The valves can be manually activated and disabled. The ZV-C and ZV-O valves from Gorter offer high performance, safety and accuracy to the users. Up to 100 bar pressure can be resistant to the device. The overall weight of the component is 800 grams. The gadget may be used safely between -20°C and +60°C. The product lines of Gorter’s ZV-C and ZV-O are NEN-EN 10204/2.2 certified.