CONTROLE VALVE WITH FIXED OUTLET PRESSURE

[lomli]

HI

WE ARE DESIGNING A GAS RECOVERY SYSTEM FROM A PROPANE REFRIGERATION LOOP.

PROPANE VAPORS RECOVERED WILL BE REINJECTED IN A BOIL-OFF SYSTEM TO BE COMPRESSED AND LIQUEFIED AGAIN WITH VAPORS COMING FROM STORAGE TANKS.

THE TIE-IN POINT IS LOCATED AT ABOUT 100 M FROM THE RECOVERY POINT IN THE BOIL-OFF COLLECTOR IN WICH PRESSURE MUST NOT EXCEED 0.15 KG/CM2.

THE RECOVERED GASES PRESSSURE VARIES FROM 5 TO 3 KG/CM.

THE OPERATION TAKES ABOUT 30 MINUTES BY MEANS OF A RSTRICTION ORIFICE.

AT THE INJECTION POINT, A PRESSURE CONTROL VALVE MUST DECREASE THE PRESSURE TO ABOUT 0.15 KG/CM2 WHATEVER PRESSURE OR FLOW WILL CHANGE.
THE CONTROL VALVE MUST GIVE 0.15 KG/CM2 AT THE OUTLET EITHER PRESSURE IS 5 - 4 - 3 KG/CM2, AND FOR VAIRABLE FLOWRATE.

I'M ASKING IF SUCH VALVES EXIST, IF YES HELP TO GET SPECIFICATIONS AND DESIGN CALCULATION METHOD AND A SCHEMATIC FOR THE CONTROL LOOP.

THANK YOU VERY MUCH.

 

[roydm]

You won't get anywhere shouting at us.
Take your "caps Lock" off and start again

 

[dcasto]

you need a simple regulator. The volume will determain the size.

Look up regulators. Fish, Kimray, Singer. mooney, there are a whole lot of them.