name=go... pneumatically operated selector valves all of these valves are designed to fail closed. pneumatically operated master valves all of the valves are designed to fail open. miscellaneous components in. butterfly valve marine style in. butterfly valve marine style in. butterfly valve marine style...
. . prior to valve installation, flush the pipeline to insure flow of clean fluid through the valve. . for future maintenance, install isolation gate valves upstream (and downstream if not releasing to atmosphere) from bermad valve. . install the valve in the pipeline with the valve flow direction arrow...