What type of Valve will be suitable

I would use a linear trim globe valve.

If the flow is continuous install it with the flow under the seat, per manufacturers directions.

If the flow in intermittent and you want a tight shutoff, you may want to install the valve with the flow over the seat. With this arrangement the upstream pressure helps seal the valve. Of course, the actuator will have to be big enough to overcome the sealing pressure or the valve will not open when needed.

For this service, gate valves, butterfly valves, and ball valves will not perform well at all.

Also, have the valve vendor do an analysis for flow induced sonic vibration initiated by the flow between the valve plug and the valve seat over the full range of valve travel and flow rate. Check the sonic frequencies against the natural harmonic frequencies of the upstream and downstream piping. If there is resonance coupling you have a potential problem.

I had a 12 inch diameter, schedule 120 double extra heavy, pipe header split like a banana peal when the compressor inter-stage letdown valve opened to 61% of full valve travel during a hydrogen compressor startup. Luckly there was no fire, because I was only 15 feet from the pipe when it failed.

To fix the problem we installed two parallel letdown valves with a split range controller, and installed pressure reducing orifices in the downstream piping but upstream of the vent header. The globe valves had equal flow, linear trim. In service the control scheme, while it sounds complicated was actually easy in concept. We kept either valve from being held at 61% open. The first valve opened to 55% before the second valve came off the seat and started to open. When the second valve reached 55% open, the first valve automatically kicked open to 65% and the second valve automatically kicked closed by a corresponding amount of flow. The first valve was then allowed to open to 100% before the second valve opened any more. When the second valve reached 55% open, it kicked open to 65% and the first valve closed by the corresponding amount of flow. In this manner flow control was maintained over the entire range while not allowing either valve to sit on 61% open.

Hope this helps.

Dear Harralrw,

Thanks alot for your comment, it really has helped me out.

Regards

chidexozukwe