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Double Eccentric Flange Butterfly Valve
RKS fluid was founded in 1997. We are a production workshop for both foundry and machining, research & development center, and quality inspection cent...
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Swing check valve
Swing check valve is mounted with a disc that swings on a hinge or shaft. The disc swings off the seat to allow forward flow and when the flow is stop...
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Hydraulic Control Valve
Features： Fully bore globe pattern design, lowest head loss while fully open Keep stable working condition even the flow rate close to zero High sens...
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Ball Check Valve
Ⅰ Business area: fluid control products, technology and environmental protection products. Ⅱ Advanced CNC machining centers, professional process ce...
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Metal Seated Gate Valve
RKS fluid was founded in 1997. We are a production workshop for both foundry and machining, research & development center, and quality inspection cent...
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Resilient Seated Gate Valve
Series: SASQUATCH series soft seal gate valve Port size: DN50 - DN900 (NPS2-NPS36) Pressure rating: PN10, PN16 Temperature: 0℃~80℃ Connection: Flange Certificate: CE ,WRAS,API,OHSAS18001:2007,ISO9001:2015
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News
The Difference Between A Lug and Wafer Butterfly Valve
2019-02-12 16:59:28
Butterfly valves have been around for a long time, and are used for a variety of applications. They made their first appearance during the 1930s, and have been utilized by several industries ever since. Often made out of cast iron, butterfly valve's name is based from the functionality of its disc.
Wafer type butterfly valve installation instructions and steps
2019-01-03 16:27:13
The wafer butterfly valve is one of the most common types of valves in industrial pipelines. The structure of wafer butterfly valve itself is relatively small. It is only necessary to put the butterfly valve in the middle of the flange at both ends of the pipe, and use the stud bolt to pass through the pipe flange and the pair.
How Does a Pressure Reducing Valve (PRV) Work?
2024-10-15 16:58:28
Twenty-five Taboos for Valve Installation
2019-09-06 10:23:57
Valves are the most common equipment in chemical companies. It seems easy to install valves, but if they are not implemented in accordance with the re...
Manual valve operation method
2019-04-01 11:50:16
The manual valve is a valve operated by the handle and the hand wheel, and is a commonly used valve on the equipment pipeline.
Valve common standards and differences
2019-05-07 17:37:21
DIN standard now uses EN standard structure length
EN 558-1 PN flange connection valve construction length (instead of DIN 3202), EN 558-2 CLASS flange connection valve construction length (instead of BS2080), EN 12982 butt weld end valve construction length (instead of DIN 3202), DIN standard The length of the structure including the length of the API valve is basically the same as the length of the GB...
Butterfly Valve Seat & Seal Ring Replacement Method
2021-02-01 18:14:53
The butterfly valve disc is a key component of the butterfly valve, which acts on closing and opening and closing. Butterfly valve seat and butterfly ...
Resilient Seated Gate Valve
2022-10-17 16:09:38
Resilient-seated gate valve with bolted cover connection; made of ductile iron materials and with epoxy coating, designed as both clockwise and anti-c...
What's the working principle of Kieselguhr Filter?
2019-07-01 13:05:32
What is Kieselguhr Filter? What's the working principle of Kieselguhr Filter? The kieselguhr filter (Candle filter / Cake Filter) which we for customized for fluorine chemical plant six more lithium fluoride phosphate phosphorus process have been installed and working for two years
New designed PTFE RPTFE sealing replaceable seat high performance butterfly valve
2022-04-24 10:39:22
MINOTAUR series replaceable seat high performance butterfly valve
Resilient Seat Butterfly Valve
- Size: DN32 - DN2000
- Pressure Ratings: PN6, PN10, PN16
- Connections: Wafer/Lug/Double flange
- Temperature: -10°C ~ +80°C
- Body Materials: Ductile Iron
- Medium: Water/Oil/Gas
- Design Standard: BS EN593
- Face to Face: ISO 5752
- Flange Standard: ASME B16.5 BS EN1092
- Applications: HAVC, Fire protection,water treatment,irrigation, CDU
- Product Details
RKSfluid Center Line Butterfly Valve is a resilient seated concentric butterfly valve designed for reliable isolation and flow control in water transmission, HVAC, fire protection, irrigation and industrial utility systems.
Available in wafer, lug and double flange configurations from DN32 to DN2400, the valve provides cost-effective shut-off performance with low operating torque and compatibility with manual, gearbox, pneumatic and electric actuators.
| Size | DN32 - DN2400 （NPS1 1/4-NPS96) |
| Pressure ratings | PN6 - PN10 - PN16 |
| Temperature range | -10℃-+80℃ |
| Disc Materials | Ductile iron + Nylon, Ductile iron + Epoxy, CF8, CF8M, Duplex stainless steel |
| Seat material | NBR, EPDM, VITON |
| Connection | Wafer/Lug/Double flange,U-Section |
Key Features
- Bubble-tight shut-off performance
- Low operating torque for manual and automated operation
- Replaceable resilient seat design
- Bidirectional sealing capability
- Multiple disc and seat material combinations available
- ISO 5211 top flange for actuator mounting
- Available in wafer, lug and double flange configurations
- Suitable for water, HVAC and utility pipeline systems
Configuration Selection Guide
| Configuration | Typical Applications |
| Wafer Type | General water systems,HVAC,pump stations |
| Lug Type | End-of-line service,maintenance isolation |
| Double Flange Type | Large diameter pipelines and buried installations |
| U-Section Type | Large transmission mains and municipal water projects |
Need assistance with your project requirements?
The RKSfluid engineering team provides professional support for product selection, technical specifications and customized solutions to help ensure the right solution for your application.
Contact us for technical support or a quotation.
FAQs
Center line butterfly valves are suitable for water, oil and gas applications, including HVAC, fire protection, water treatment, irrigation and CDU systems. They are commonly selected where compact design, reliable shut-off and easy operation are required.
The connection should match the pipeline layout and installation requirements. RKSfluid valves are available in wafer, lug, double flange and U-section configurations. Flange dimensions and installation space should be confirmed before selection.
RKSfluid Center Line Butterfly Valves are available in PN6, PN10, PN16 and Class 150 pressure ratings. The appropriate rating should be selected according to the pipeline design pressure and applicable project specifications.
NBR, EPDM and VITON seats are available. EPDM is commonly used for water, while NBR is suitable for certain oil applications. VITON can be considered for applications requiring higher chemical and temperature resistance.
Disc options include ductile iron with nylon or epoxy coating, CF8, CF8M and duplex stainless steel. Material selection depends on the medium, corrosion conditions, pressure and project requirements.
The valve is designed according to BS EN 593. Face-to-face dimensions follow ISO 5752 for wafer, lug and double flange types, and EN 558 Series 20 for U-section designs. Flange requirements can be selected according to the application.
RKSfluid Center Line Butterfly Valves are available from DN32 to DN2000, covering small- to large-diameter pipeline applications. The final selection should consider pipe diameter, pressure rating, connection type and operating conditions.
Yes. Different body, disc, seat and connection configurations are available. For EPC and project orders, specifications such as medium, pressure, temperature, flange standard and installation conditions can be reviewed for proper valve selection.
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