Emerson DeltaV KJ3221X1-BK1

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Emerson  DeltaV KJ3221X1-BK1 Power module In Stock

Extension bonnets are used for either high or low temperature service to protect valve stem packing

 from extreme process temperatures. Standard PTFE valve stem packing is useful for most applications

 up to 232°C (450°F). Extension bonnets move the packing box of the bonnet far enough away from the

 extreme temperature of the process that the packing temperature remains within the recommended range.Extension bonnets are either cast or fabricated (Figure 3.16). Cast extensions offer better hightem

perature service because of greater heat emissivity, which provides better cooling effect. Conversely, smooth surfaces–such as those fabricated from stainless steel tubing–are preferred for cold service because heat 

inffux is typically the major concern.Bellows seal bonnets (Figure 3.17) are used when no leakage (less than 

1x10-6 cc/sec of helium) along the stem can be tolerated. They are often used when the process ffuid is toxic, volatile, radioactive, or very expensive. This special bonnet construction protects both the stem and the valve packing from contact with the process ffuid. Standard or environmental packing box constructions above the bellows seal unit will prevent catastrophic failure in case of rupture or failure of the bellows.

Product details:

Emerson  DeltaV KJ3221X1-BK1 Power module

Contact information：

Contact person：Luna Chen

Email Address:：sales6@saulplc.com

WhatApp： +86 13358378970

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