Butterfly Valves Books

Effectively managing valves as an asset can have a significant impact both for the water utility and the customer. This revised manual covers valve selection and installation as well as the importance of location, condition, and frequency of operation.The updated figures show commonly used valves and their components, including: globe; butterfly; ...

By American Water Works Association (AWWA)

Green Butterfly Valve, meet ISO, ANSI, JIS standard, with A type, LT type structure, is the normal control butterfly valves, design in Italy, high quality ...

By Lapar Control Valve

This standard covers inspection, examination, supplementary examinations, and pressure test requirements for resilient-seated, nonmetallic-seated (e.g. ceramic), and metal-to-metal-seated valves of the gate, globe, plug, ball, check, and butterfly types. Resilient seats are considered to be:soft seats, both solid and semi-solid grease type (e.g. ...

By American Petroleum Institute (API)

This standard covers design, materials, face-to-face dimensions, pressure-temperature ratings, and examination, inspection and test requirements for gray iron, ductile iron, bronze, steel, nickel-based alloy, or special alloy butterfly valves that provide tight shutoff in the closed position. The following two categories of butterfly valves are ...

By American Petroleum Institute (API)