Double Eccentric Butterfly Valve
Datasheet
Download datasheet (PDF)Specifications are indicative. Final specification is confirmed at quotation.
Specifications
Confirmed at quote- Size Range
- DN200 to DN4000
- Pressure Class
- PN10, PN16, PN25, PN40
- End connection
- Flanged
- Operating temperature
- 0°C to 80°C
Standards
- Design & manufacture
- EN 593, BS 5155, DIN 3354, EN 1074-1, EN 1074-2
- Inspection & test
- EN 12266-1
- Face to face
- EN 558-1 / ISO 5752 series 14, EN 558-1 / ISO 5752 series 13
- Flange & end dimension
- AWWA C207
- Mounting
- ISO 5210
Configure your variant(manually adjust box on the right if you require a different spec)
- Size
- Pressure
- End connection
Materials
All available material options per part. Click a pill to set it in the configurator.
- Body
- Bonnet
- Disc
- Seat
- Stem
- O-Ring
- Body Seat
- Bolt
- Disc Seal Ring
- Gear Housing
- Key
- Lower Shaft
- Packing Gland
- Retainer Ring
- Screw
- Shaft Bearing
- Shaft Cover
- Taper Pin
- Upper Shaft
Operating media
Typical applications
- Potable water
- Sea water
- TSE water
- Low-corrosive liquids
- Throttling service
- Applications requiring valve actuation after long periods of inactivity
- Full vacuum service
Actuation options
Coatings
Approvals
Features
- Stainless steel welded and finished body seat for corrosion and wear resistance
- Streamlined low-profile disc design verified by finite element analysis for lower flow resistance
- Seal gasket at shaft bearing/disc joint, double O-ring on shaft bearing, and closed disc eyes forming dry operating condition for shaft and shaft seal
- Anti-blowout shaft design
- Disc to shaft connection by taper pin or key (optional)
- Self-lubricating bearings in bronze or stainless steel lined PTFE to reduce shaft friction and operating torque; bearings keep disc centred and prevent axial movement
- Multiple O-rings in shaft sealing system; O-rings on packing gland and shaft cover replaceable without removing valve from pipeline
- Suitable for full vacuum service conditions
- T-profiled resilient seal ring secured on disc by retainer ring and bolts; bidirectional sealing; adjustable or replaceable on site without special tools
- External locking device on non-drive shaft end to allow gearbox removal with valve in service
- ISO 5210 top flange for electric actuator coupling
- Fusion bonded epoxy coating internally and externally, 250 micron thickness (other coatings/linings available on request), colour RAL5005/5015/5017
- 100% tested before delivery
- Double-flanged end connections
- Double-eccentric disc configuration
- Worm gearbox actuator with handwheel
- Open/Close indicator on gearbox
- 18-part numbered sectional assembly (parts 1-18 labelled on sectional diagram)
Description
A double eccentric butterfly valve designed to EN 593, BS5155, and DIN3354, with a ductile iron body and stainless steel welded body seat. The valve features a T-profiled resilient disc seal ring secured by a retainer ring, anti-blowout shaft design, and self-lubricating bearings. Rated from PN10 to PN40 across a size range of DN200 to DN4000, with fusion bonded epoxy internal and external coating.
Selection notes
This butterfly valve is a double eccentric pattern, supplied for flanged installation.
Sizes run DN200 to DN4000, in PN10, PN16, PN25, PN40.
The body is GJS400-15 (GGG40).
Seat and trim options are 316. The seat, not the body, usually sets the temperature and medium limit, so confirm it against the service before ordering.
Stated service media include potable water, sea water, tse water and low-corrosive liquid.
It is catalogued for Water & Wastewater and HVAC.
Working temperature is 0°C to 80°C.
Built to EN 593, BS5155, DIN3354, EN 558-1 / ISO 5752 series 14 and EN 558-1 / ISO 5752 series 13.
Supplier remarks
- Other materials such as carbon steel, st. steel, duplex SS, aluminum bronze are available on request.
- Different coating/lining is available as special request.
- Disc to shaft connection by means of taper pin or key (optional).
Available pressure classes
Pressure classes this product is rated to.
Used in
Related guides
Smart find
Searches our product catalogue using your spec. Drop a spec sheet or parts list (PDF, Excel, CSV, Word or text, several at once), paste a description or a part number and we'll find the closest matches for each. Anything we can't match goes to your RFQ as a custom enquiry for our team to source.Related Butterfly Valves
Butterfly ValveREF 18Centerline Flanged Butterfly Valve
- Type
- Butterfly Valve
- Size
- NPS 2" to NPS 48"
- Pressure
- PN10, PN16, Class 150
- Body
- Ductile Iron / Cast Iron
- Standards
- API 609, MSS SP-67
Adds to your quote request, not a purchase. Refine size, pressure and material before submitting.
Butterfly ValveREF 24High-performance Butterfly Valve
- Type
- Butterfly Valve
- Size
- DN50 to DN1200
- Pressure
- PN10, Class 150, Class 300
- Body
- WCB / A351 Gr CF8 / A351 Gr CF8M / A351 Gr CF3M
- Standards
- API 609, MSS SP-67
Adds to your quote request, not a purchase. Refine size, pressure and material before submitting.
Butterfly ValveREF 27PTFE Lined Wafer Butterfly Valve
- Type
- Butterfly Valve
- Size
- NPS 1" to NPS 48"
- Pressure
- PN10, PN16, Class 125
- Body
- Cast iron / Cast steel / Stainless steel
- Standards
- API 609, MSS SP-67
Adds to your quote request, not a purchase. Refine size, pressure and material before submitting.
Butterfly ValveREF 31Ventilation Butterfly Valve
- Type
- Butterfly Valve
- Size
- DN100 to DN3600
- Pressure
- Class 150, Class 300
- Body
- WCB / CF8 / CF304 / CF3M / CF316L
- Standards
- —
Adds to your quote request, not a purchase. Refine size, pressure and material before submitting.