China 150mm Butterfly Valve Suppliers, Manufacturers, Factory

Size Range:2" - 12" (50mm - 300mm)
Body Style:Lug
Temperature Range:0°F - 212°F (-18°C to 100°C)
Pressure Ratings:Bidirectional Bubble-tight Shutoff: 285 psi (20 Bar)
Body (CWP): 285 psi (20 Bar)
Body Materials:Ductile Iron, Carbon Steel, Nickel Aluminum Bronze
Disc Materials:Stainless Steel, Nickel Aluminum Bronze
Stem Materials:Stainless Steel, Monel K500
Seat Materials:Bonded BUNA-N
Applications:High Pressure Industrial and Marine Dead-End service, On-Shore and Off-Shore Fire Protection

Components and Materials

Item	Name	Material	Qty.
1	valve Body	Carbon Steel Nickel Aluminum Bronze Ductile Iron	1
2	valve Disc	316 Stainless Steel Monel K500 Nickel Aluminum Bronze	1
3	valve Stem	17-4PH Stainless Steel Monel K500 Stainless Steel	1
4	valve Seat	Bonded BUNA-N	1

Valve Type:
Body:	Shall be one piece lug design with extended neck to allow for 2" of piping insulation. Flange hole drilling per international flange standard as specified. A non-corrosive bushing and a self-adjusting stem seal shall be provided. No field adjustment shall be necessary to maintain optimum field performance.
Disc	Disc edge and hub on metal discs shall be spherically machined and hand polished for minimum torque and maximum sealing capability.
Stem:	Shall be high strength two piece design Disc-to-stem connection shall be and internal double "D" design with no possible leak paths in the disc-to-stem connection. External disc-to-stem connections such as disc screws or pins are not allowed. Stem shall be mechanically retained in the body neck and no part of the stem shall be exposed to the line media.
Seat:	Shall be tongue-and-groove seat with a primary hub seal and a molded flange O-ring suitable for weld-neck and slip-on flanges. The seat shall totally encapsulate the body isolating it from the line media and no flange gaskets shall be required.
Testing:	Valve shall be tested to 110% of the rated pressure.
Pressure Ratings:	Valve shall be rated for bubble-tight shutoff at pressure rating shown below.
All Resilient Seated Series 31U valves: 2" - 20" (50mm-500mm) 285 psi (20.0 Bar)