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VÁLVULAS DIAFRAGMA

Las válvulas de diafragma ofrecen muchas combinaciones de materiales de diafragma de cuerpo y elastómeros, se pueden operar manualmente, eléctricamente o neumáticamente, son resistentes a la abrasión y no se obstruyen. Las suspensiones a baja presión que normalmente obstruyen la mayoría de los otros diseños de válvulas, pasan fácilmente a través de una válvula de diafragma. Ademas su diseño de entrada superior, permite el mantenimiento en línea, siendo adecuada para el servicio de estrangulamiento y ON / OFF en aplicaciones que van desde el tratamiento de agua hasta procesos de abrasión química

Type-14 Flanged Valve (1/2" – 4")

The Type-14 diaphragm valve features improved body to bonnet sealing performance, visual position indication, weir design for excellent throttling capabilities and built in travel stop to prevent over-tightening and eliminate compressive strain. Bubble tight sealing can be achieved even in tough applications containing suspended particles or slurrys.

Asahi’s Type-14 diaphragm valve features a layered EPDM/PTFE diaphragm which can accept the addition of a PVDF gas barrier for aggressive chemicals such as Sodium Hypochlorite. These aggressive chemicals produce an off-gas that can permeate the typical laminated PTFE layer and actually become delaminated in this highly corrosive environment leading to a potentially hazardous situation. The Type-14’s 3-layer diaphragm which includes the gas barrier layer, prevents this from ever occurring. The Type-14 diaphragm valve body is of 1-piece molded construction and is not fabricated. For maximum corrosion resistance, the Type-14 diaphragm valve‘s rugged body and bonnet are manufactured of solid thermoplastic materials. The Type-14 diaphragm valve can be pneumatically or electrically actuated.

Ideal Applications Include: 

Throttling, slurry lines, chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, semiconductor manufacturing

Features/Benefits:

• Flanged (ANSI) face-to-face dimensions are equivalent to most commonly used metallic valves
• Rugged square body and bonnet are of solid thermoplastic for maximum corrosion resistance
• Uniquely designed body and bonnet together with diaphragms of new sealing designs by the state-of-the-art computer aided analysis for superior sealing
• Weir design for excellent throttling
• Bubble-tight sealing, even in applications such as slurries or suspended particles
• Built-in travel stop to prevent over-tightening or compressive strain on diaphragm
• Integrally molded bottom stand for simple yet firm panel mounting
• Indicator at the top for indication of valve position and prevention of over-tightening
• PVDF gas barrier, which protects EPDM backing from gas permeation, is standard for all valves with PTFE Diaphragm
• Integrally molded bottom stand for simple yet firm panel mounting
• Indicator at the top for indication of valve position and prevention of over-tightening
• PVDF gas barrier, which protects EPDM backing cushion from gas permeation, is standard for all valves with PTFE diaphragm
• Low profile
• Bayonet structure to connect compressor and diaphragm – easy diaphragm replacement

Specifications:

Sizes:

1/2" – 4"

Body Materials:

PVC, CPVC, PP and PVDF

Bonnet Materials:

PVC, PP, PPG and PVDF

Diaphragms:

EPDM and 3-Layer EPDM/PVDF/PTFE
Also available in Nitrile and FKM.

End Connectors:

Flanged

Operator:

Handwheel

Resources:

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