Double-eccentricity Butterfly Valve
Double-eccentricity Butterfly Valve
Double Eccentric Butterfly Valve is also called High Performance Butterfly Valve, which is mainly used in water plants, power plants, environmental facilities construction and other systems for drainage, especially for waterway pipelines, as a regulating and intercepting equipment.
Technical Specifications
Materials:
Body:
Forged Carbon Steel:
ASTM A105 | ASTM A350 Gr. LF2 | A182 F5,F9, F11, F22, F91
Forged Stainless Steel:
ASTM A182 Gr F316, F316L, F316Ti, F304, F347H, F317L, F321/321H, F310S, F44(254SMO)
Duplex:
A182 F51, F53, F55
Nickel Alloy:
Monel 400 | Inconel 600, 625 | Hastelloy C27, C22, B2 | Incoloy 800/800HT, 825 etc.
Ball:
ASTM A105 w/ENP | ASTM A350 Gr. LF2 w/ENP | ASTM A182 Gr. F316 | ASTM A182 Gr. F316 w/ENP
Stainless Steel | Duplex SS | Nickel Alloy etc.
Seat:
RPTFE | Nylon | Davilon | PEEK | Tek-Fil® | TFM
Stem:
ASTM A479 Type 410 | 17-4PH | XM-19 | ASTM A182 F316 | Stainless Steel | Duplex SS | Nickel Alloy etc.
Caliber Range
2“ to 120” | DN50 to DN3000
Pressure Range
Class150 to 600 | PN10 to PN100
Connection
RF | RTJ
Operating Temperature
-46℃ to 200℃ | -50.8℉ to 392℉
Operation
Handle | Worm Gear | Electric etc.
Design Standard
API 609 | ASME B16.34 | GB/T12238 | JB/T 8527
Leakage Class
ANSI B 16.104 Ⅵ
Material Molding
Forging | Stamping
Features And Benefits
Between the opening and closing of the valve, the sealing surface of the butterfly plate will gradually deviate from the seat sealing surface, squeezing the seat sealing surface, so as to reduce the mechanical abrasion and damage between the sealing surface of the butterfly plate and the seat sealing surface.For double eccentric butterfly valves, when the butterfly plate is rotated by 8 to 12 degrees, the butterfly plate sealing surface will completely leave the seat sealing surface, so as to reduce the mechanical abrasion.Due to the effective reduction of the mechanical abrasion, the sealing performance and the service life will be effectively strengthened. The sealing performance and service life will be enhanced due to the effective reduction of mechanical abrasion.
Compact And Light
Butterfly valve assembly space is small, light weight, easy to install and maintain, suitable for working conditions with limited space.
Good Sealing And Long Service Life
Good sealing effect, long service life, adapt to a variety of fluid control occasions.
Lightweight And Low Torque
Light structure design, low operating torque, reduce operating costs and energy consumption.
Soft Seal
Soft sealing design ensures high sealing performance, adapting to various working conditions.
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