A system for facilitating an automatic urinal-toilet flushing, comprising: • a pipe having an intermediate enlarged inner diameter area, said pipe comprising: ∘ a first portion (P 1) having a first diameter (d 1); ∘ a second portion (P 2) having a second diameter (d 2); ∘ a third portion (P 3) having a third diameter (d 3); wherein the first, the second and the third portions are sequential and the second diameter (d 2) is greater the first diameter (d 1) and the third diameter (d 3); ∘ a tapered fourth portion (P 4) connecting the first portion (P 1) to the second portion (P 2); and ∘ a tapered fifth portion (P 5) connecting the second portion (P 2) to the third portion (P 3); • a dual valve mechanism located within the pipe, said dual valve mechanism comprising an inlet valve, an outlet valve and a connecting-rod connecting the inlet valve and outlet valve; and • a spring actuated mechanism connected to the dual valve mechanism and comprising: a mechanical compressible platform mounted upon a base in a movable manner, and separated from the base by a set of compression springs to get automatically actuated under a weight of a user and move close to the base; and a connecting cable connecting the compressible platform to the dual valve mechanism to actuate the first and second valves (1, 2) with the mechanical platform, wherein the spring actuated mechanism upon actuation operates simultaneously upon the inlet valve and the outlet valve to perform a flushing operation. • a pipe having an intermediate enlarged inner diameter area, said pipe comprising: ∘ a first portion (P 1) having a first diameter (d 1); ∘ a second portion (P 2) having a second diameter (d 2); ∘ a third portion (P 3) having a third diameter (d 3); wherein the first, the second and the third portions are sequential and the second diameter (d 2) is greater the first diameter (d 1) and the third diameter (d 3); ∘ a tapered fourth portion (P 4) connecting the first portion (P 1) to the second portion (P 2); and ∘ a tapered fifth portion (P 5) connecting the second portion (P 2) to the third portion (P 3); ∘ a first portion (P 1) having a first diameter (d 1); ∘ a second portion (P 2) having a second diameter (d 2); ∘ a third portion (P 3) having a third diameter (d 3); wherein the first, the second and the third portions are sequential and the second diameter (d 2) is greater the first diameter (d 1) and the third diameter (d 3); ∘ a tapered fourth portion (P 4) connecting the first portion (P 1) to the second portion (P 2); and ∘ a tapered fifth portion (P 5) connecting the second portion (P 2) to the third portion (P 3); • a dual valve mechanism located within the pipe, said dual valve mechanism comprising an inlet valve, an outlet valve and a connecting-rod connecting the inlet valve and outlet valve; and • a spring actuated mechanism connected to the dual valve mechanism and comprising: a mechanical compressible platform mounted upon a base in a movable manner, and separated from the base by a set of compression springs to get automatically actuated under a weight of a user and move close to the base; and a connecting cable connecting the compressible platform to the dual valve mechanism to actuate the first and second valves (1, 2) with the mechanical platform, wherein the spring actuated mechanism upon actuation operates simultaneously upon the inlet valve and the outlet valve to perform a flushing operation. a mechanical compressible platform mounted upon a base in a movable manner, and separated from the base by a set of compression springs to get automatically actuated under a weight of a user and move close to the base; and a connecting cable connecting the compressible platform to the dual valve mechanism to actuate the first and second valves (1, 2) with the mechanical platform,