spectacle blind valve prices

1.Simplified design, ruggedly and dependably built, easy to operate and economical to maintain – are the principal advantages of the zero leakage blind valve. The blind valve will render an absolute tight shut-off in blast furnace, basic oxygen, open hearth or other gas mains. The blind valve is designed for vertical operation in a horizontal main – with rollers and other daptations provided for horizontal operation in a vertical main. 2.When in the closed position, a definite separation on each side of the goggle plate is assured – to prevent leakage of gas from one side of the blind plate to the other. Should leakage occur between the blind plate and the clamping or stationary frames (due to improper clamping, for example), leakage will be admitted to the atmosphere and not around the blin plate to the depressurized side of the valve.