Comeval DIAVAL W
Category: Valves
SubCategory: DiaphragmValves
Manufacturer: Comeval
Industry:
SubCategory: DiaphragmValves
Manufacturer: Comeval
Industry:
Weir Type Diaphragm Valves are linear motion valves, bidirectional, for stopping or regulating the flow of the service fluid when necessary
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Key product features
- Ergonomic and rugged rising handwheel
- Yellow position indicator, for clear and positive valve position from any angle
- Closure Diaphragms; manufactured from elastomeric and fluorocarbon material
- Weir-type diaphragm closure → supports both isolation and flow regulation.
- Bidirectional operation → simplifies installation where process flow direction may vary.
- Wide diaphragm material selection → supports matching to corrosive, abrasive or chemically demanding media.
- Lined and unlined body options → broaden material compatibility choices.
- Sizes up to DN300 → covers small through large process lines within one product family.
- Up to 16 bar in selected rubber-diaphragm configurations → provides a verified pressure capability for industrial service.
- PTFE diaphragm options → support applications requiring fluoropolymer chemical resistance.
Valves close by turning the handwheel clockwise. Valves are bolted bonnet, seatless design, with a diaphragm as closure element, with rising handwheel. Valves are offered with a broad range of diaphragms and linings materials to resist to abrasion and corrosion duties. The valves are inexpensive and easy to maintain, being the optimal solution for a large number of applications
What is Comeval DIAVAL W used for?
DIAVAL W is used to isolate or regulate aggressive, corrosive and abrasive liquids in industrial piping. The weir-type diaphragm design supports both shut-off and throttling duties. AxFlow can help assess suitability for the actual medium and operating conditions.
Which materials are available for DIAVAL W?
COMEVAL offers multiple body, lining and diaphragm material combinations, including elastomer and PTFE options. Selection depends on the process fluid, pressure and temperature. AxFlow can help verify the appropriate configuration for the application.
What pressure can DIAVAL W handle?
Maximum allowable pressure depends on valve size and diaphragm material. Rubber-diaphragm versions reach up to 16 bar in DN10–50, while PTFE configurations reach up to 10 bar in DN10–125. The final pressure-temperature limit must be checked for the selected materials and medium.
Can DIAVAL W be used for flow control?
Yes, the weir-type DIAVAL W is intended for both shut-off and flow regulation. Suitability for a specific control duty depends on the process conditions and valve configuration. AxFlow can help determine the correct manual or actuated arrangement.
How is DIAVAL W maintained?
The diaphragm is the primary process sealing and wear component and can be replaced during service. The bolted bonnet design provides access to internal components without removing the body from the pipeline. AxFlow can assist with identifying diaphragms and other service parts.
