Valve Body - Weir Type Valve Bodies
With a wide range of base body materials including cast/ductile iron and SS, solid plastics, elastomeric linings, injection moulded plastic linings, fluoro-polymer coatings and other specialty coatings, our range enables our valves to be optimised to suit many corrosive and abrasive environments.
The selection of the best body material to suit an application is made based on such variables as: media type, temperature and pressure; frequency of thermal cycling, percentage of solids, particle size profile, required end connections and size.
It is necessary to consider many other variables before finalising a selection. These include:
- Service chemical(s)
- Percentage solids and particle size profile
- Velocity of service
- Proximity of valve to pipe-work direction changes
- Working temperature - min/normal/maximum
- Working pressure - minimum/normal/maximum
- Frequency of operation (throttling requirements)
Fluid behaviour differs according variables such as process conditions, temperature, concentration, pressure, nature of the flow, installation & design and site experience and these variables should be taken into accounimumt in the application of the above guidelines.
There are many critical services that demand a lined body for maximum chemical or corrosion resistance. KDV Valves offers the above standard linings with many other special linings and coatings available on request. Special linings and coatings are available to suit specific applications where combinations of corrosion and abrasion occur. Not all linings as above are available in all different face to face standards.
We recommend that your selection is confirmed with an engineer from KDV or an authorised KDV distributor.
KDV bodies can be identified by heat number traceability when requested at order and linings are spark tested in accordance with the relevant standards.