Electric Flanged Butterfly Valve

Product Details

The electric flanged butterfly valve utilizes a “U” shaped stainless steel sealing ring, which forms precise elastic three-dimensional eccentric contact with the polished butterfly plate. This design addresses the issue of traditional eccentric butterfly valves maintaining sliding contact friction on the sealing surface when opening and closing at 0° to 10°, achieving separation of the sealing surface from the butterfly plate when opened and closed to extend service life and optimize sealing performance. As a result, the electric flanged butterfly valve is extensively applied in industries such as metallurgy, electric power, petroleum, chemical industry, air and gas transportation systems, as well as water supply and drainage for corrosive media pipelines with medium temperatures ≤550℃. It serves as an optimal device for flow regulation and fluid shut-off.

The electric flanged butterfly valve typically consists of an angular travel electric actuator (with a partial rotation range of 0~90°) mechanically connected to the entire assembly of the butterfly valve after installation and adjustment. The disc-shaped butterfly plate is installed in the diameter direction of the pipeline within the cylindrical channel of the valve body where it rotates around its axis within an angle range from 0° to 90°; full openness occurs at a rotation angle of 90°.

This type of valve features a simple structure with minimal parts that are lightweight and compact. Its operation involves quick opening or closing by rotating just 90°—a straightforward process—and exhibits excellent fluid control characteristics. When fully open, only minimal resistance is offered by the thickness of the butterfly plate as medium flows through it; consequently generating low pressure drop for superior flow control characteristics. Butterfly valves are available in two seal types: resilient (elastomeric) seals or metal seals. In elastomeric sealing valves, these seals can be mounted on either side or attached along periphery edges.

Product Characteristics

1. The butterfly valve features a simple, compact, and lightweight structure, making it easy to install and disassemble with convenient maintenance.

2. Equipped with a stainless steel “U” type sealing ring, the butterfly valve exhibits excellent elasticity at both high and low temperatures, ensuring outstanding sealing performance alongside the butterfly plate.

3. Through meticulous calculation of its three-dimensional eccentricity, the butterfly valve minimizes friction between the “U” type sealing ring and the butterfly plate, resulting in an extended service life and enhanced tightness.

4. The surfacing welding cobalt-based cemented carbide on the sealing surface of the butterfly plate ensures wear resistance and a prolonged service life.

5. With its unique structure, the butterfly valve requires only a 90° turn of the valve stem to complete switching operations. This design offers flexible operation that is labor-saving and unaffected by medium pressure while delivering reliable sealing performance.

6. It boasts high temperature resistance, low temperature resilience, as well as corrosion resistance.

Medium

Air, Water, Sewage, Steam, Gas, Oil, Corrosive Media, etc.

Application

 The industries include chemical, petrochemical, petroleum, paper, mining, electricity, liquefied gas, food processing, pharmaceuticals, water supply and drainage systems, municipal services, machinery and equipment manufacturing support for these industries as well as the electronic industry and urban construction.

Adoption Standards

Design Standards: GB/T12238-1989

Flange Connection Size: GB/T9113.1-2000; GB/T9113.2-2000      GB/T9115.1-2000; GB/T9115.2-2000

Structure Length: GB/T12221-1989

Pressure Test: GB/T13927-1992; JB/T9092-1999

Actuator

1. Actuator with intelligent, adjustable, and switching functions.

2. Compact size: occupies only about 35% of the volume compared to similar products.

3. User-friendly design: operates on single-phase power supply with simple wiring; features an original spherical protruding structure for convenient observation. No refueling or spot inspection required, waterproof and rust-resistant, and allows for flexible angle installation.

4. The protection device includes double limit, overheat protection, and overload protection. Offers full travel time options of 15 seconds, 30 seconds, 45 seconds, and 60 seconds along with manual operation capability.

Main Parts Material

Body: Cast Iron, Cast Steel, Stainless Steel, Chromium Molybdenum Steel, Alloy Steel

Plate: Cast Steel, Alloy Steel (Hard Chrome Plated), Stainless Steel, Chromium Molybdenum Steel

Sealing Ring: Stainless Steel, Polyester, Anti-wear Material

Valve Stem: 2Cr13, 1Cr13 Stainless Steel, Chromium Molybdenum Steel