// Define the dimensions and features of the valve
valve_width = 40;
valve_height = 60;
valve_thickness = 10;
valve_handle_length = 20;
valve_handle_width = 10;

// Create the valve body
valve_body = cube([valve_width, valve_thickness, valve_height]);

// Create the valve handle
valve_handle = cube([valve_handle_length, valve_thickness, valve_handle_width]);

// Combine the valve body and handle
valve = union() 
    { valve_body,
    translate([(valve_width - valve_handle_length) / 2, 0, (valve_height - valve_thickness) / 2]) {
        valve_handle
    }
    }

// Display the valve
difference() {
    valve;
    translate([valve_width / 2, 0, valve_height / 2]) cylinder(r = valve_thickness, h = valve_height);
}