Monitoring port.
The primary external seal is provided by the interaction of the surface of the
plug, the circumferential sealing surface of the PTFE sleeve, and the valve
body.
To enhance protection against external leakage, these PTFE chevron rings
provide a secondary (redundant) pressure-assisted stem seal.
Carbon graphite filled PTFE and rings prevent extrusion of the PTFE packing.
Live loaded spring washers provide a constant uniform pressure on the packing.
The spring washers compensate for any expansion and contraction of the PTFE
packing rings caused by temperature fluctuations.
To protect the spring washers from damage and particle intrusion, they are
completely enclosed.
A patented shrink-seal lip is machined in the interior bore of the bonnet. Any
radial shrinkage of the PTFE packing causes the packing to compress tightly
against this lip. This patented lip actually tightens the seal as the packing
shrinks.
Longer-lasting in-line sealing
The inert PTFE sleeve completely surrounds the plug. The sleeve provides a
full-circumferential sealing surface from port to port. Open, closed, or
rotating, the seal is assured.
The PTFE sleeve is chemically inert. It resists heat and stress cracking.
Moisture absorption is negligible. It provides self lubrication.
The engineered body bore employs high pressure cast ribs to assure tight
in-line sealing. This assures the best possible concentricity between the plug
and valve body.
360° port defining lips (introduced and patented by XOMOX) surround the
valve ports. As the plug turns in the resilient PTFE sleeve, these lips wipe
off any residue or particles adhering to the plug. They also protect the sleeve
from erosion, prevent cold flow deformation, and eliminate sleeve rotation.
More choices...
Xomox offers single-source responsibility for a broad line of
application-specific Tufline valves and Matryx actuators for your most
demanding applications.
More help...
Rely on Xomox consultive selling services for innovative valving solutions.
Knowledgeable Xomox Sales Engineers, technical support staffs, service center
personnel and authorized distributors will all help you dramatically reduce
downtime and greatly extend valve service life.
More savings...
Typically, with Tufline Valves, downtime and maintenance are dramatically
reduced. Service life is greatly extended. Many processors experience dramatic
cost reductions when they switch from ball and gate valves. Scores of case
histories prove it. A small investment in Tufline Valves can provide a huge
R.O.I. Call us. We will show you the numbers.