Wholesale U type butterfly valve EPDM seal short series flange butterfly valve Suppliers, Manufacturers

Type:Concentric Resilient Seated

Series:UD41X

Size: DN40-DN2000/2”-80”

Pressure rating: PN6/PN10/PN16/5K/10K/150LB

Design standard: EN/DIN/API

Service: OEM&ODM

The U-section Butterfly Valve is a short structure, high-strength flange butterfly valve with a "U" - shaped valve body that combines the thinness of a clamp valve with the stability of a flange valve. It is commonly used in medium and low pressure water supply and drainage, HVAC, and general industrial pipelines.

Product Description

Valve Type: Concentric butterfly valve Structure: Concentric
Standard: EN/DIN/API Workmanship: Investment casting
Sealing direction: Bidirectional Sealing grade: Zero leakage
Temperature: -20°C<T<120°C Operation: Handle/Lever
Concentric Butterfly Valve

Characteristics

This U-type flange butterfly valve features an integrated U-shaped valve body with high rigidity and deformation resistance. Equipped with integral flanges on both ends, it ensures firm pipeline connection and excellent vibration resistance. With a compact overall length, it saves installation space effectively. The valve operates via 90-degree rotary movement, requiring low operating torque and enabling fast opening and closing. Its simplified structure also facilitates easy on-site assembly and routine maintenance.

Valve Characteristics

Advantages

1. Structural & Installation Advantages

The GGG40 U type valve body is designed with an integrated U-shaped design, which has strong rigidity and is not easily deformed. The overall size is small and lightweight, greatly saving installation space. Equipped with flanges at both ends, the pipeline is firmly connected and has good seismic resistance. Compared with traditional flange butterfly valves, it is easier to install and suitable for various pipeline layouts.

2. Circulation & Usage Advantages

Adopting a 90 ° rotary opening and closing, with low operating torque and fast switching speed; Smooth flow channels, low flow resistance, and high medium transport efficiency. The bf U type can be paired with various driving modes such as manual, worm gear, pneumatic, electric, etc., to meet the needs of manual control and automation working conditions, and is widely applicable in various scenarios.

3. Sealing & Operation Advantages

There are two types of structures: soft seal and hard seal. Soft seal achieves zero leakage, while hard seal is resistant to high temperature, erosion, and wear. The overall components are streamlined, with stable operation and low failure rate. Daily maintenance and upkeep are convenient, and long-term usage costs are lower.

Packing

Standard export wooden case packaging

Standard Export Packaging

Application Scenarios

This U type double flange butterfly valve is widely used in municipal water supply and drainage, fire protection systems, building HVAC and cooling water pipelines. It also serves general industries like chemical, papermaking and food processing.

Application Scenario 1
Application Scenario 2
Application Scenario 3

Material Specifications

Body Disc Stem Bushing Seat
Name Code Name Code Name Name Name Code Working temp (°C)
Cast iron Z Plated ductile iron B1 Stainless steel

Carbon steel
Lubrized bronze

PTFE
NR X1 -20 ~ +85℃
Ductile iron Q Aluminum bronze B2 Hypalon X2 -23 ~ +121℃
Aluminum bronze T ZG1Cr18Ni9Ti Stainless steel B3 EPDM X3 -23 ~ +121℃
ZG1Cr13Ni9Ti Stainless steel P Titanium steel B4 Neoprene X4 -7 ~ +93℃
CF8M Stainless steel R CF8M Stainless steel B5 NBR X5 -23 ~ +100℃
Carbon steel C Carbon steel B6 Wear-resistant rubber X6 -10 ~ +100℃
CF8 Stainless steel - CF8 Stainless steel B7 VITON X7 -23 ~ +200℃
- - - - Hear-resistant rubber X9 -23 ~ +135℃
- - - - PTFE F4 +10 ~ +150℃

Dimensions & Technical Drawings

Valve Dimensions Diagram
Specification A B C ΦD ΦE ΦG f H J ΦK L n-Φ1 Φ2 α
mm inch
100420011452.0710470135525.9790.0390284-1015.7745
125521312755.5123.370135533.9110.190284-1018.9245
150622613955.75155.670135549.93145.2790284-1018.9245
200826017560.58202.5102137070.96193.23125454-1222.145
2501029220368250.5102137091.25241125454-1228.4545
3001233724276.9301.61022070112.35291.63125454-1231.645
3501436826776.17333.31252085128.57324.48150454-1431.645
4001640030985.7389.614020100151.95380175514-1833.1545
45018422328104.6440.5114020100167.96427.91175514-183845
50020480361130.28491.614020100180.66474175574-1841.1545
60024562459151.36592.516522130220.57572.84210724-2250.6545
7002862452016369525430200266675.62300828-1863.3522.5
80032672591188794.725430200303.35772.14300828-1863.3522.5
90036720656203864.725430200330.85840.533001108-187522.5
10004080072121696525430200374.5940.523001428-188522.5
12004894086425411602983423045311313501508-2210522.5

Frequently Asked Questions

What standards do these U-type flange butterfly valves comply with?
Our U-type flange butterfly valves strictly conform to international manufacturing standards, including EN, DIN, and API standards, ensuring high quality and smooth installation across worldwide pipeline systems.
What are the primary structural advantages of the U-shaped valve body?
The integrated U-shaped design delivers high structural rigidity and deformation resistance. Featuring integral flanges on both ends, it guarantees firm pipeline connections, excellent seismic resistance, and compact overall dimensions to save valuable installation space.
Can this valve achieve zero-leakage performance?
Yes, when equipped with soft sealing options (such as EPDM, NBR, or NR), the valve achieves bidirectional zero-leakage sealing grade. Hard sealing options are also available for elevated temperature and high-wear operational conditions.
What actuation options are compatible with this valve?
The valve is engineered for low operating torque during 90-degree rotation. It supports manual operation (handle/lever) and can be configured with worm gear, pneumatic, or electric actuators to satisfy both manual and automated system requirements.
What working temperature range does the valve support?
The standard operating temperature range is -20°C < T < 120°C. Specific working temperatures depend on seat material selection, extending up to +200°C for VITON seats or down to -23°C for EPDM/Hypalon materials.
Where are U-type double flange butterfly valves commonly installed?
These valves are suitable for municipal water supply and drainage, fire protection systems, HVAC cooling water systems, and industrial processing lines such as chemical production, paper manufacturing, and food processing.

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