BETTER resilient seated butterfly valves are designed based on Cooper Cameron DEMCO series butterfly valves, the extension stem is also available, and extension stem length can be customized.

The extension stems are made from carbon steel, which is contained in a tubular housing. Lengths from 3" to 16ft can be customized according to the client's request.

If you intend to purchase the extension stem only to match with DEMCO original butterfly valves. Please order as per the part number, we will produce the right stem. For example,

HOW TO ORDER: Base Part Number xxxxx +++ Length in.xxx
Butterfly valve’s size	2-4in	5-6 in	8 in	10 in	12 in	14 in	16 in	18-20 in	24 in
Base Part No.	23318	23319	23320	23321	23322	24529	24530	24531	24532