The BDTP (Bellows Double Tandem Pumping) is a highly-innovative hybrid design, modular to the BDFI .Also The seal’s directed barrier fluid flow path achieves optimum heat removal at both sets of seal faces.Also The inboard bellows unit ideally suit to replace the semi-dynamic sliding elastomer of a conventional pusher type seal which allows it to more readily apply to thermal applications.

Features:

• Inboard bellows unit ideally situated to replace sliding elastomer of conventional pusher type seal
• Integral bi-directional flow inducer
• Fits on pumps with thin radial cross sectional spaces
• 50% more bellows than industry standard reduces stress on each convolution of bellows stack
• Modular design enables use on multiple applications, simplicity of purchase and also fast delivery

BDTP – Better by Design

The BDTP is an innovative hybrid design, modular to
the highly successful BDFI .

Inboard Bellows

The bellows unit is ideally suit to replace the semi–dynamic sliding elastomer of a conventional pusher seal. Also This allows the bellows design to more readily applied to thermal applications.
The BDTP is available in any AESSEAL® standard metal bellows material and also seal face combination including SHS, HHH and SAC with Carbon, Antimony Carbon, TC or SiC seal faces.

Directed Barrier Fluid Circulation

Removing the heat at the inboard faces is critical for any double mechanical seal, more so on a seal which may apply to thermal applications. Also The BDTP directed barrier fluid flow path achieves effective heat removal at both sets of seal faces.

Bi-directional Barrier Fluid Circulation

The BDTP will reliably circulate barrier fluid irrespective of the direction of shaft rotation with a Patent Pending pumping ring.

Fits in Thin Radial Cross Sectional Spaces

The BDTP can install on equipment with radial cross sectional spaces as small as 0.312” (8mm).Also This is typical on some
smaller sized process pumps.

Bellows Outboard Rotary Seal face

Any seal design applied to thermal applications must have the ability to seal relatively hot barrier fluids without leaking externally.

The Patent Pending outboard rotary seal face is offered as standard with an Alloy C276 Bellows stack and also 316L Stainless Steel face holder. As the face holder is a modular component to many other AESSEAL® product ranges it can be offered in Alloy C276 if required.

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