China Double Eccentric Butterfly Valve Suppliers - DN100 to DN2400 Factory Direct Products for Water Networks
Double Eccentric Butterfly Valve Product Features
GGG40/50 Ductile Iron Body & Disc allows high impact and streching resistance
Double Eccentric / Double Offset Disc Design
Resilient Seated Type
Disc sealing ring EPDM as default. NBR or VITON options are available
Block moulded solid/one-piece T-shaped disc sealing ring extends drop-tight sealing life time
Easy to replace disc sealing ring without dismantling the valve from the pipeline and without dismantling the disc from the valve itself just by taking out the retaining ring through its bolts. Iit is easy to replace the disc sealing ring without any additional equipments
SS308/316 grade stainless steel welding seat on the body is manufactured through automatic welding machines and microfinished precise milling operation. When disc is fully closed, disc sealing ring applies equal pressure on every point on the welding seat.
Drop-tight closure
Double O-ring feature on both shafts ensures high sealing
Shafts are equipped with bronze bushings having high corrosion resistance
Ensures minimized pressure loss and increased energy efficiency with double shaft design
With the o-rings on the bearing bushings, disc pin holes are protected against corrosion. Dry shaft up to request.
Easy to operate with self locking gearbox equipped with mechanical indicator
Low torque requirements during operation
Easy to install on the line, light weight and occupies less space
Full coating on the body and disc internally & externally with an average of 250 microns. Higher coating thicknesses are available when required.
WRAS approved coating available upon request which meets hygienic requirements for potable water applications
Maintenance free design for the valve and gearbox
Default operation is gearbox with ISO top flange ready to connect electrical actuator. Pneumatic actuators can be installed directly on the top flange of the valve itself.
V106 Double Eccentric Butterfly valves are deisgned bi-directional according to EN1074-2. For proper installation, direction arrow on the body should be considered.
Operation with extended spindle version is also available
Balanced positioned lifting holes on the body ease transportation and installation.
Hydrostatic test pressure for seat: PN x 1.1 , for shell: PN x 1.5 according to EN 12266-1.
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Frequently Asked Questions (FAQ)
What materials are used for the body and disc of the Double Eccentric Butterfly Valve?
The body and disc are manufactured from GGG40/50 Ductile Iron, which provides excellent resistance to high impact and stretching.
Can the disc sealing ring be replaced without removing the valve from the pipeline?
Yes, the disc sealing ring is designed for easy replacement. You can replace it without dismantling the valve from the pipeline or removing the disc itself, simply by taking out the retaining ring through its bolts.
What sealing material options are available for this valve?
The default disc sealing ring is made of EPDM. However, NBR or VITON material options are also available depending on your application requirements.
Is this butterfly valve suitable for potable water applications?
Yes, a WRAS approved coating is available upon request, which fully meets the hygienic requirements necessary for safe potable water applications.
How is the valve protected against corrosion?
The valve features a full internal and external coating on the body and disc with an average thickness of 250 microns. Additionally, the shafts are equipped with highly corrosion-resistant bronze bushings, and the disc pin holes are protected by O-rings.
What are the hydrostatic test pressure standards for this product?
According to the EN 12266-1 standard, the hydrostatic test pressure is PN x 1.1 for the seat and PN x 1.5 for the shell.