What is a (double offset) high performance butterfly valve?
High-performance butterfly valve is generally made to use on the high-pressure piping system. The high-performance double offset butterfly valve, used in higher-pressure systems, is offset from the centre line of the disc seat and body seal (offset one), and the centre line of the bore (offset two). This creates a cam action during operation to lift the seat out of the seal resulting in less friction than is created in the zero offset design and decreases its tendency to wear.
Huamei high performance butterfly valve offers the high-performance butterfly valves with the low-cost, lightweight benefits of a butterfly valve design. It is ideal for handling water, oil, steam, gas, and slurries. Huamei high-performance butterfly valves satisfy a wide range of industrial applications. Available in carbon steel or stainless steel, as well as lug and wafer body styles, they can be specified in sizes 2″ through 60″.
Main Product Features:
- Double offset/eccentric design with bi-directional bubble-tight shutoff performance, extremely high pressure application than ordinary butterfly valves.
- Double offset/eccentric configuration with conical angled disc design. Long life durability due to double offset operating principle minimizing seat wear.
- High pressure application with small torque. Maximize flow and minimize resistance providing high Cv.
- Seat available in either Soft (PTFE/RTFE), Metal or Fire Safe. Fast and simple seat replacement. All of soft seats, Metal seats and Fire Safe seats are inter-chageable.
- Excellent corrosion resistance.
- Internal travel stop design to prevent over travel of the disc, minimizing possible seat damage.
How it works?
The double offset design of the Huamei High-Performance Butterfly Valves assures reduced seat wear and bi-directional, zero leakage shut off throughout the full pressure range.
At the initial point of disc opening, the offset disc produces a cam-like action, pulling the disc from the seat. This cam-like action reduces seat wear and eliminates seat deformation when the disc is in the open position. When open, the disc does not contact the seat, therefore seat service life is extended and operating torques are reduced. As the valve closes, the cam-like action converts the rotary motion of the disc to a linear type motion to effectively push the disc onto the seat. The wiping action of the disc against the seat prevents undesirable material build-up from slurries or suspended solids.
Ningjin Huamei Machinery Co., Ltd. is a professional manufacturer of soft seat, metal seat and fire-safe high-performance butterfly valves, our unique seat design is equal to Flowseal and Bray. Under an ISO 9001 Quality Assurance Program, it assures each valve we produce meets or exceeds your application requirements.
Huamei high-performance butterfly valves are available in sizes from 2" - 60" in ANSI/ASME, DIN standards and are available with a diverse range of manual and actuated options.
Our high performance butterfly valves are widely used in many industries including heating, ventilating and air conditioning, power generation, hydrocarbon processing, water and wastewater treatment, and marine and commercial shipbuilding. Our products are also installed in applications as diverse as food and beverage processing, snowmaking and pulp and paper production. Configurations are available for harsh conditions as well as applications requiring nominal pressure and temperature ratings.
Butterfly valves categories
Huamei Machinery is a professional manufacturer of double offset high performance butterfly valves, our valves are available in LUG, WAFER or DOUBLE FLANGE connections. End flange specifications are available in ASME Class 150/300/600, DIN ISO PN10/16/25/40/100.
Huamei Machinery is a professional manufacturer of double offset high performance butterfly valves, our valves are available in SOFT SEAT, METAL SEAT and FIRE SAFE SEAT seal designs. The unique seat designs promise bi-directional sealing for both upstream and downstream directions.
Huamei Machinery is a professional manufacturer of double offset high performance butterfly valves, With unique seat designs, the valves can fully reach ANSI Class 150/300/600 and PN16/25/40/100 pressure ranges.
Huamei Machinery is a professional manufacturer of double offset high performance butterfly valves, our valves are available in WCB, CF8M, DUPLEX STEEL , HASTELLOY and NICKEL ALUMINUM BRONE mateirals. Variety of material options with unique seat designs can fulfill requirements for huge applications.
Huamei Machinery is a professional manufacturer of double offset high performance butterfly valves, our valves are available with Lever Handle, GEAR BOX, Pneumatic Actuator and Electric Motor oprations.