Check valves are very important in a hydraulic installation and the selection of the right type is very crucial for an effective and safe operation. GEMAK has a selection program in order to define the most appropriate check valve in each case. In general terms there are some special characteristics of each type of check valves, as mentioned bellow:
With regulation of the closure and opening speed. It closes rapidly and provides protection to the machinery and the paipeline according to the regulation. Appropriate for pipelines under 400m length.
If the surge wave critical time is less than 0,4sec, please conduct GEMAK, so that we are able to suggest the best and the most effective solution for each case.
6. Check valve with Rubber sealing Disc
suitable for water supply, irrigation and sewage networks
7. Ball type check valve for sewage networks
The water flow in irrigation or water supply networks often starts or stops abruptly causing hydraulic hammershock, the main factor for breakage and damages of the pumps and pipes. The check valve with the rubber blocking eliminates the pump and network destruction risks because it receives and absorbs all the created high pressure functioning...more
Spring type check valve prevents back-flow and protects the network and the pump from the pressure surge caused by the shutdown of the pump. It is installed on the pump discharge or wherever it is considered to be necessary. The valve opens when the upstream pressure presses the spring by forcing the sealing disc to move upwards. When...more
It is used for irrigation, water supply networks and gas circuits as both suction and discharge. It acts prohibitively to back flow of fluids and gases. It is easily connected to the net, as it is tightened between two flanges with screws.more
The Membrane check valve with disc type AS-CV is designed to fully open during working conditions to allow smooth flow with minimum pressure losses. The metal and shaft inside the valve are fully covered with EPDM rubber in compliance with the norm EN681-1, WRAS approved for potable water. The disc closes smoothly and instantly to prevent...more