The MBV 3000 test valve is designed for test ofthe Danfoss cartridge pressure transmitterswithin the marine industry.The main advantage is the ability to test theoperating transmitter through the testconnection. A built-in shut-off valve gives thepossibility to maintain transmitter withouthaving to drain the system. After thetransmitter is tested, the valve is manually reopenedand the transmitter is again connectedto the system.