TEKO Industry Co., Limited
Nothing will Happen, Except Satisfaction
Add to Cart
36 Inch Large Size Monel Disc Motorized High Performance Butterfly Valves Flanged Type
What is Butterfly Valve
A butterfly valve is a type of quarter turn valve used to regulate or stop the flow of liquids through a pipe. A quarter turn valve means that whenever the Operator is turned 90 degrees, the valve is either fully open or fully closed. A metal disc within the body of the valve is positioned perpendicular to the flow in a fully closed position.
A user then regulates the flow by intermediate rotations of the operator. Butterfly valves apply to a wide range of uses. They are used in all applications that can tolerate a disc in the flow stream. The TEKO butterfly valve can be operated by handles, gears or actuators, depending on the specific need. The valve is advantageous because of its small size that doesn’t take up much space, easier to turn, lightweight and lower cost compared to other valve designs.
What are High-Performance Butterfly Valves?
Double offset butterfly valve is an HPBFV rated for ANSI (285 @ 100F or 100 psig @ 400F for 150# ANSI) rated applications. For this type of valve, the disc and stem are double offset, (set back behind the disc and to the side) causing the disc to rotate into place upon closure without significant seat contact. Different from an RSBFV, the stem is located behind the disc, which enables the disc to “rub” over the seat in the last 10% of travel, during the 90-degree rotation.
This seat usually is some type of Reinforced PTFE or for high temperatures above 450F, the seat can be metal, usually a hardened metal, like Stellite. The most user-friendly allow removal/replacement of the stem, disc, and seat without welding
Where to use the High-performance Butterfly Valves?
These valves are used for higher pressure than zero offset butterfly valves (ANSI Rated), and offer adjustable packing on the stem thus lower emissions and stem leakage.
Specifications
| Body Style | Wafer, Lug, Double Flanged |
| Body | CS, SS |
| Disc | CF8M, CF8 |
| Stem | 316 SS, 17-4 PH, XM-19 |
| Seat |
PTFE, RTFE Metal (SS, Inconel) Firesafe |
| Size Range | 2”~48” |
| Pressure Rating |
Class 150 Class 300 Class 600 |
| Leakage Class |
Soft seat – Class VI Metal seat – Class IV |
| Design Standard | API 609 Category B, BS EN 593 |
| Testing Standard | API 598, BS EN 12266-1 |