Body and connections
Body exterior and connection details
Butterfly Valves
Concentric Resilient-Seated Flanged Butterfly Valve
Concentric Resilient-Seated Flanged Butterfly Valve supports pipeline isolation and flow control where the configuration suits the duty. Selection focuses on the sealing arrangement, fluid conditions, piping interfaces and operating requirements.
- Nominal size
- DN50-DN1000
- Pressure rating
- PN16
- Model
- D341X，D41X
- Body material
- cast iron，cast steel，stainless steel
Configuration and suitability depend on the specific model documentation.
Product overview
Concentric Resilient-Seated Flanged Butterfly Valve
Service conditions
A butterfly valve changes the available flow area as its disc rotates about the stem. Its compact rotary arrangement is widely used for pipeline isolation. Flow-control duty also requires assessment of disc position, differential pressure, flow response and actuator control capability.
Construction and description
In a concentric butterfly valve the disc axis passes through the flow-passage center and the disc edge engages a resilient seat. Consider seat deformation, edge contact and pipe bore, with enough clearance for the disc to rotate fully.
Service conditions
A resilient seat seals through contact and deformation where it meets the disc. Match the seat material to the fluid, temperature and cleaning conditions. Aging, swelling and trapped particles can affect operating torque and the sealing surface.
Construction and description
Match the operator to the valve load and site operating method. Manual operation needs accessible clearance. Frequent cycling or remote control also calls for assessment of output capability, duty and position feedback.
Service conditions
Flanged ends support piping interfaces and removal for service. Match flange standard, pressure designation, facing, gasket and fasteners, and check face-to-face length and pipe support to limit piping loads on the body.
Construction and description
Define fluid composition and continuous and start-stop operating conditions, then assess body, internals and seals as a combination. Particles, deposits and cleaning affect sealing surfaces and mechanisms; plan maintenance for the actual service.
Product details
Operating mechanism
Operating mechanism and mounting details
Related products
Technical specifications
基本参数
- Model
- D341X，D41X
- Pressure rating
- PN16
同行产品参考，待确认
- Nominal size
- DN50-DN1000
- Seat material
- Peer-product reference; confirmation required: Bray Series 30/31; EPDM (ethylene propylene diene rubber), NBR (nitrile rubber), FKM (fluoroelastomer), polyurethane or high-temperature EPDM (ethylene propylene diene rubber); select for fluid. Not a rating for this product.
材料与结构
- Body material
- cast iron，cast steel，stainless steel
- Disc material
- Greycast iron, Ductile ironcast steel, cast steel, stainless steelAnd special materials
- Stem material
- 2Cr13 (martensitic stainless steel) , stainless steel
- Packing
- O Ring, flexible graphite O
连接与使用
- Seal ring
- Ductile ironcast steel, cast steel, Alloy steel, stainless steel
- Service media
- air, water, wastewater, steam, coal gas, oil products etc..
基础规格
- End connection
- Flanged
技术参数
- Operation
- Manual, electric, pneumatic
Features & benefits
Explore the product structure and configuration.
Structure depends on the model. Select the image to enlarge.
01Operating principle
A butterfly valve changes the available flow area as its disc rotates about the stem. Its compact rotary arrangement is widely used for pipeline isolation. Flow-control duty also requires assessment of disc position, differential pressure, flow response and actuator control capability.
02Design and selection
In a concentric butterfly valve the disc axis passes through the flow-passage center and the disc edge engages a resilient seat. Consider seat deformation, edge contact and pipe bore, with enough clearance for the disc to rotate fully.
03Design and selection
A resilient seat seals through contact and deformation where it meets the disc. Match the seat material to the fluid, temperature and cleaning conditions. Aging, swelling and trapped particles can affect operating torque and the sealing surface.
No matching features.
Industry applications
Confirm the configuration for the medium and service conditions.
Explore all industries →Selection and maintenanceBrowse product knowledge →
No industry information is currently linked
Share your medium and conditions so we can assist.