Applications
Ebonite valves may be utilised for both isolation or flow control applications. Over the last 30 years, these products have proven their reliability in sea water cooling systems, offshore and onshore fire mains systems, potable water in de-salination plants, and many applications where iron contamination of fluid is undesirable.
Ebonite lined valves have also proved reliable on low level slurry applications and flows where fine particles may be present. For applications with a higher density of particles a shaft/bearing seal may be provided as an option.

Design
The Ebonite used in these products protects the valve material from the line fluid, thus permitting the use of less expensive ferrous metals as opposed to the more costly options such as bronze, stainless steel, monel etc.

Key Features

Shut Off Tight shut off in both directions to API 598 Servicing Field replaceable resilient disc seal Pressure Ratings ANSI 125lb, 150lb ratings. Higher pressure ratings on request Single/Double Offset Single or double offset valve geometry available Torque Low seating and unseating torque's Design Body designs: Double flanged, wafer lugged and wafer flangeless. Flange Standards Flanges to suit any British, American or continental flange standards including ANSI, API, MSS, BS, PN and ISO Actuation Actuation via manual gearbox, pneumatic, electric or hydraulic actuators Technical Description SOLENT & PRATT, E series valves are of single or double offset geometry design, developed for High Performance, Control and Isolation duties. They feature integral body seat and resilient seal ring (disc mounted). Similar in construction to the R - series range, they are available in a wide range of castable materials to order in sizes 3" to 84", 150# class. The Solent & Pratt, E - series valve has an 'Ebonite' lining, which is a hard Natural Rubber, bonded and autoclave cured to achieve maximum strength and adhesion. It has 'corner locking' overlap features round the flange and shaft bores to maintain optimum stability. The seat contact area, against which the resilient disc seal ring (Nitrile / EPDM / Buna / Viton) locates, is fully machined to ensure consistently tight shut-off, with seal rings of 'flat' or 'music note' design, dependent upon process pressures. These are replaceable parts. In operation, there is a key difference when compared with some other rubber lined valves. The Ebonite is part of the structural rigidity of the body and the resilient seal is disc located. This is the element being compressed during sealing on closure. This eliminates both dragging on the liner, and creep, which occurs on other valve designs where the disc is solid and sealing is made by compression of the liner. The Ebonite will also provide some resistance to low level slurries / fine particles in the flow and where these are present in any density, then a further back-up shaft bearing seal is available as an option. It is an ideal product for applications handling - Seawater / Platform firewater systems / Potable water in De-salination plants, or where iron contamination of the fluids are undesirable. It is available with Gear operator, Electric, Hydraulic or Pneumatic actuators.

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