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Butterfly Valve

Soft Sealing Flange Butterfly Valve

Soft Sealing Flange Butterfly Valve is an industrial flow control valve featuring a flange connection and an elastic sealing structure. It uses soft sealing materials such as EPDM, NBR, or PTFE to provide reliable shut-off performance, low torque operation, and excellent sealing for water, air, and industrial fluid pipelines.


Applications

Soft Sealing Flange Butterfly Valve is widely used in water treatment plants, HVAC systems, chemical pipelines, power facilities, petroleum industries, and industrial fluid control systems. It is commonly selected by EPC contractors, engineering companies, valve distributors, and pipeline system integrators.


Core Features

1. Soft Sealing Design

Equipped with elastic sealing materials to achieve tight shut-off performance with leakage rates meeting zero leakage requirements.

2. Low Torque & Easy Operation

Optimized disc and sealing structure reduces operating torque by approximately 30%, improving valve efficiency and service life.

3. Wide Size & Pressure Range

Available in sizes from DN50 to DN1200 and pressure ratings up to PN16/Class 150, suitable for various industrial pipeline applications.

4. Multiple International Standards Available

Available in API, DIN, GOST, JIS, GB, and other standards to meet global project requirements.


OEM & ODM Service

We provide OEM and ODM services including customized valve sizes, sealing materials, body materials, flange standards, actuator options, surface treatments, logos, nameplates, and packaging to meet different industrial needs.

Quality Assurance

Each Soft Sealing Flange Butterfly Valve undergoes strict material inspection, dimensional verification, pressure testing, and sealing performance checks before shipment. Inspection reports, material certificates, and quality documents are available upon request.

Warranty Service

We provide warranty coverage for manufacturing defects under normal operating conditions, together with technical support and after-sales assistance to ensure reliable long-term valve operation.

Shipping Service

Soft Sealing Flange Butterfly Valves are packed in export-standard wooden cases with protective packaging to ensure safe international transport. We support sea freight, air freight, and customized logistics solutions with complete export documentation.

Application Specification

Main Dimensions

Main Parts Material and Application

Contact Us

Available Standards: API, DIN, GOST, JIS, GB, etc.

DN Dimensions Flange Dimensions
Flange L1 H H1 A 1.0MPa 1.6MPa
D D1 Z-Φd D D1 Z-Φd
50  108  43  63  315  180  165  125  4-18 165  125  4-18
65  112  46 70  330  180  185  145  4-18 185  145  4-18
80  114  46 83  390  245  200  160  4-18 200  160  8-18
100  127  52 105  431  240  220  180  8-18 220  180  8-18
125  140  56  115  455  240  250  210  8-18 250  210  8-18
150  140  56  137  626  350  285  240  8-22 285  240  8-22
200  152  60  164  720  350  340  295  8-22 340  295  12-22
250  165  68  206  800  550  395  350  12-22 405  355  12-26
300  178  78  230  860  600  445  400  12-22 460  410  12-26
350  190  78  248  883  600  505  460  16-22 520  470  12-26
400  216  102  289  972  600  565  515  16-26 580  525  16-26
450  222  114  320  1043 750  615  565  20-26 640  585  16-30
500  229  127  342  1098  750  670  620  20-26 715  650  20-30
600  267  154  413  1236  750  780  725  20-30 840  770  20-33
700  430  165  478  1431  750  895  840  24-30 910  840  24-36
800  470  190  525 1488  750 1015  950  24-33 1025  950  24-39

Available meterials: WCB, LCB, LCC, WC6, WC9, C5, C12, A105, F11, CF8, CF8M, CF3, CF3M, etc. 
Widely applied in petroleum, power plants, chemical, natural gas, municipal engineering, metallurgy, construction, pharmaceutical, papermaking, coal mine, cement, sewage treatment, environmental protection, energy conservation and other industries.

BOYE VALVE GROUP CO., LTD.
BOYE VALVE GROUP CO., LTD.

Founded in 1992, the company was founded in Oubei, the hometown of pumps and valves in China. It has been deeply engaged in the valve industry for more than 30 years, providing high-quality products and efficient services for fluid control demanders. At present, it is a professional valve national high-tech enterprise integrating R & D, production, sales, service, import and export. At the end of 2022, the State Administration for Industry and Commerce approved the promotion to no regional group company-Boye Valve Group Co., Ltd. 

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