Blow-out proof stem aids valve design
A
Bray Controls product story
Edited by the Engineeringtalk editorial team
Dec 8, 2005
Bray Controls designs blow-out proof stem for Bray Series 40 butterfly valves.
Bray Controls has designed a blow-out proof stem for its Series 40 butterfly valves.
The stem will become standard on all Series 40 valves, replacing the old stem design.
With the new design, the valves comply with the latest edition of the API 609 code.
Series 40 valves have been in service for more than 30 years in process industries worldwide.
Available in wafer and lug style bodies, these valves have bidirectional sealing to Ansi Class 150, 300 or 600 ratings.
The fire-safe models conform to API 607 latest edition and can control flammable and hazardous fluids in petroleum, petrochemical, chemical and other high-risk applications.
Standard body materials are either carbon steel or stainless steel for corrosion resistance.
A high-strength 17-4 PH stainless steel valve stem is standard.
The actuator mounting flange and stem connection are designed to ISO5211 for direct mounting of Bray actuators.
The disc has been engineered to increase flow and reduce resistance.
Various body, stem and disc materials are available.
An internal travel stop has been designed to prevent over travel of the disc, reducing possible seat damage, therefore extending the service life of the seat.
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