Overview
Dt643H pneumatic flexible metal sealing butterfly valve with a "U"-type stainless steel ring, the precision of the elastic seal with the polished butterfly plate three-dimensional eccentric contact. To solve the traditional eccentric butterfly valve in the headstock 0 ° ~ 10 ° instantaneous sealing surface is still in the shortcomings of sliding contact friction to achieve butterfly plate sealing surface in the opening moments that the separation of close contact with the sealing effect, to extend the service life of sealing performance the best purpose. Which is widely applied to the medium temperature ≤ 550 ℃ metallurgy, electric power, petroleum, chemical, air, gas, combustible gas, and water supply and drainage pipes and other corrosive media, the
To regulate the fluid flow and cut off the best device.
Features
1, the valve structure is simple, compact, light weight, easy installation and removal, maintenance convenient;
2, the butterfly valve of stainless steel "U"-type ring, with a certain degree of flexibility in terms of high temperature, low temperature case, it is with the butterfly boards come with excellent sealing;
Three, the three-dimensional eccentricity butterfly valve, after a rigorous calculation, "U" type seal ring and the butterfly board almost no friction, long service life, and has more features closed more tightly;
4, butterfly plate sealing surface using cobalt-based alloy welding, sealing surface wear resistance and long service life;
5, the valve structure, a unique "switch" just turned 90 ° to complete the stem. Is flexible, convenient, labor-saving, free from media pressure, high and low impact sealing performance and reliable;
6, high temperature resistance, low temperature, corrosion resistance.
Standard
Design Standards: GB/T12238-1989
Flange connecting dimensions:
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
Executing agency
Adopt the new series of GT-type pneumatic actuator, there are double-acting type and single-acting type (spring return), gear transmission, safe and reliable; large-diameter valves with pneumatic actuator Series AW-type fork-type drive, reasonable structure, the output torque large, double-action and single-action
1, gear-type pairs of pistons, the output torque, small size.
2, cylinder use aluminum gold-like material, light weight, beautiful appearance.
3, may be at the top, the bottom of the installation manual body.
4, rack-type connection can be adjustable opening angle, rated flow.
5, actuator optional instructions and all kinds of live feedback signal in order to achieve automation accessories.
6, IS05211 standard connection for the installation of the product provides a convenient replacement.
7, both ends of the section of screw adjustment allows the standard products in the 0 ° and 90 ° with ± 4 ° of adjustable range. To ensure the accuracy of synchronization with the valve.
Attachment options
Depending on the control and demands may choose the following annexes:
Cutting-type attachment: Single electric control solenoid valve, double-electric control solenoid valve, limit switch back to hearing devices.
Adjustable type accessories: electric positioner, pneumatic positioners, electrical converters.
Air Source Processing Accessories: air filter valve, air source processing parts triple.
Manual Organization: HVSD manual operator body

Main technical parameters