Lug Concentric Butterfly Valve, API 609, GGG40, 4 IN, 150 LB

Key Specifications / Features

The Lug Concentric Butterfly Valve is designed according to API 609 standards, featuring a durable ductile iron GGG40 body. This 4-inch, DN100 valve is built to withstand Class 150 LB and PN16 pressure ratings. It is lever-operated for ease of control and offers reliable performance in a range of applications.

The Wafer Concentric Butterfly Valve is designed to maintain a seal against bi-directional pressure differentials, effectively preventing backflow in systems intended for unidirectional flow. This is achieved through a tightly fitting seal, gasket, o-ring, and precision-machined flat valve faces on both the upstream and downstream sides. The valve features threaded inserts on both sides of the valve body, allowing it to be installed into a system using two sets of bolts without requiring nuts. The valve is installed between two flanges, with a separate set of bolts for each flange. This installation method allows either side of the piping system to be disconnected without disturbing the other side.

Technical Specifications

» Size Range: 2-48 Inch (DN50-DN1200)
» Pressure Ratings: Class 150 LB, PN10, PN16
» Materials: GG25, GGG40, ASTM A216 WCB, A351 CF8, CF8M, CF3, CF3M
» Optional Seat Materials: Resilient NBR, EPDM, VITON
» Operation: Handle, Handwheel, Pneumatic, Electric
» Temperature Range: -29°C to 120°C
» Medium: Water, Gas, Oil, etc.
» End Connections: Wafer, Lug, RF Flange
» Design and Manufacture Standards: GB/T 12228, API 609
» Face-to-Face (End-to-End) Standard: GB/T 12221
» Flanged Connection Standards: ANSI B16.5, GB/T 9113
» Test and Inspection Standards: API 598, GB/T 13927