The 25 MP is best installed in a horizontal line with the adjustment screw at the top. A strainer before the valve will protect it from line dirt. Fit the strainer on its side and ensure adequate clearance for screen removal.
The Spirax Sarco 3" (DN80) and 4" (DN100) FT450 is a high capacity Float & Thermostatic steam trap. The float adjusts the position of the double seated main valve so that condensate is discharged continuously at the same rate as it enters the trap.
Types SRV461/463 Direct Acting Pressure Reducing Valve with nonrising adjustment screw, O-ring soft seal on valve plug for tight ANSI Class VI shutoff, and 316 Ti stainless steel construction for wetted parts.
The 25P is a self-actuated pilotoperated pressure regulator. Downstream pressure is fed back through an external sensing line to the pressure pilot, which adjusts the opening of the main valve so as to maintain the set pressure. The valve meets Class IV shut-off specifications but is not suitable for dead-end service.
The Spirax Sarco FTI contains a float valve mechanism which modulates to discharge condensate continuously at steam temperature while non-condensible gases are released by a separate internal balanced pressure thermostatic air vent. The in-line piping connections simplify installation.
The 25 MT is best installed in a horizontal line with the adjustment knob at the top. A strainer before the valve will protect it from line dirt. Fit the strainer on its side and insure adequate clearance for screen removal.
Cv calculation is an interactive process requiring knowledge of valve dynamics, piping geometry factors, and outlet velocities. In practice, this sizing chart is based on emperical values and will cater for most applications.