Fluid controlling valves

摘要: 1,009,984. Valves. SAUNDERS VALVE CO. Ltd. Dec. 12, 1962 [Dec. 14, 1961], No. 44926/61. Heading F2V. A multiple way or, as shown, a through-way rotary-spherical valve has the obturator 13, Fig. 1, mounted on trunnions 17, 18 or directly synthetic plastic, e.g. P.T.F.E., seating rings 22; latter are slidable thrust tubes 23 embodying an annular rib 24 with outerspherical periphery that is accommodated in recess pipe connection 16 to provide for pivoting of seat. Each ring 22 sealed by annular-flexible diaphragm 28 secured 16, each being between and undulating spring 31 which also urges seat structure obturator; controlled fluid assists action. In other forms corrugated metal soldered plastic material integral ring; both peripheries may be embedded rubber-like material. The replaced metallic bellows. another form, seal provided chevron 46, 5, 47 material; formed thin laminations. An O-ring anti-extrusion used instead seal; insert shroud. further effected lip 54, 9, at rear 55; member extending 55. sealing arrangements applicable plug cocks gate valves. Specifications 571,285, 655,077 655,078 referred to.