Rising and non-rising stem gate valves

I was hoping someone will share a fantastic glossy catalog....nevertheless deepak, the gate valve's basic function is ...a gate moving up and down. So the stem has to rise up and down. So no question of non rising stem gate valve. Only difference it makes in the handwheel being fixed to the stem or not. If fixed the handwheel will rise else the stem alone will rise. Same is for globe valve as the port is not in line of the flow axis of pipe to help throttling. The principle is same up and down movement. non rising stems are the butterfly, plug, ball valves.

Check this glossy site of flowserve. http://www.flowserve.com/fls/Products/Valves

Regards,
Kannan.

"Paranjape, Deepak V" <deepak.paranjape@shawgrp.com> Sent by: piping_valves@yahoogroups.com 17/10/2008 07:26 Please respond to piping_valves@yahoogroups.com

To <piping_valves@yahoogroups.com>, <materials-welding@googlegroups.com> cc Subject [piping_valves] rising and non-rising stem gate valves

Dear all,

I am looking for a cross-sectional view for a rising stem and non-rising stem gate valve which shows exactly the working of both these types of valves.

Regards

Deepak Paranjape

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