Fluid by-pass device

Claim 1

A BY-PASS ARRANGEMENT FOR A FLUID METER ADAPTED TO BE CONNECTED BETWEEN INLET AND OUTLET CONDUITS AND TO BE BY-PASSED BY BY-PASS CONDUIT MEANS DETACHABLY CONNECTABLE TO SAID ARRANGEMENT AND HAVING MEANS ASSOCIATED THEREWITH FOR OPERATING SAID ARRANGEMENT COMPRISING: A PAIR OF INLET AND OUTLET ONE-PIECE T FITTINGS, EACH HAVING A CROSS BORE AND A LATERAL STEM BORE INTERMEDIATE SAID CROSS BORE, SAID FITTINGS BEING ARRANGED IN SPACED RELATION WITH THEIR CROSS BORES SUBSTANTIALLY PARALLEL; MEANS ON SAID FITTINGS FOR DETACHABLY CONNECTING A METER TO CORRESPONDING ENDS OF SAID CROSS BORES; MEANS ON SAID FITTINGS FOR DETACHABLY CONNECTING BY-PASS CONDUIT MEANS TO THE OTHER ENDS OF SAID CROSS BORES; MEANS ON SAID FITTINGS FOR DETACHABLY CONNECTING INLET AND OUTLET CONDUIT TO THE LATERAL BORES AND SAID INLET AND OUTLET FITTINGS, RESPECTIVELY; AND VALVE MEANS RECIPROCABLE IN THE CROSS BORE OF EACH OF SAID FITTINGS AND MOVABLE BETWEEN TWO POSITIONS, A METER POSITION WHEREIN FLOW IS BLOCKED BETWEEN THE LATERAL BORE AND THE SAID OTHER END OF SAID CROSS BORE, AND A BY-PASSING POSITION WHEREIN FLOW IS BLOCKED BETWEEN THE LATERAL BORE AND SAID METER END OF SAID CROSS BORE, SAID VALVE MEANS IN MOVING BETWEEN SAID TWO POSITIONS BEING ADAPTED TO PASS THROUGH AN INTERMEDIATE POSITION WHEREIN FLOW CAN TAKE PLACE BETWEEN SAID LATERAL BORE AND BOTH ENDS OF SAID CROSS BORE.