Conical pipeline valve body - fits inside vertical cylindrical casing mounted in line and has vertical spindle rotated by key

摘要

The block valve has a casing with screwed connections at the top so that the valve trim and internals may be located. The casing is cylindrical vertical and connects with the horizontal pipeline (P). The valve (559) has a conical shape and has a horizontal hole (50) bored through it. The valve has a spindle (60) fitted with a square section at the top for fitting a key. The valve is sealed by an 'O' ring (70) and is spring loaded by a spring ring (75) resting on the collar (73).