Blow-off/measuring pipe v 2" incl. holder ignition module for blow-off pipe 2" and two plugs Blow-off pipe with integrated pitot tube for flow speed measurement and monitoring in combination with GOLIATH. Connection to GOLIATH for speed and gas concentration measurements is realised by a hose-connecting set (separately available). The outlet end of the blow-off pipe has a 2" external thread on which the diffuser/muffler can be screwed down. Length: 1 m