| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas piping unit which has compatibility to a plurality of kinds of supply-side piping and demand-side piping which are different in diameters.SOLUTION: Since the narrowing of a gas flow passage of a bent part can be prevented by the fact that a gas cock 24 is arranged at an inlet linear part 211, a pressure loss can be reduced as a whole, and a corresponding gas flow rate can be increased. Furthermore, since inside-diameter expanded joint receivers 218 are arranged at side ends of gas meters M of an inlet piping unit 2 and an outlet piping unit 3, inside diameters of an inlet first joint 22 and an outlet first joint 32 can be set conforming to gas supply-side piping P1 and gas demand-side piping P2, and parts can be standardized with respect to a plurality of kinds of the gas supply-side piping P1 and the gas demand-side piping P2 which are different in diameters. |
