CDFI & CDFC Double Mechanical Seal Cartridge Seal Water Pump Seal

CDFI CDFC Cartridge Mechanical Seal For Chemical pumps

Features

• Integral deflector guides barrier fluid under faces and extends seal life
• Incorporates highly effective bi-directional pumping ring to maximise barrier flow and increase seal life
• Bi-Metal CDFI™ / CDFC™ options also include exotic allow wetted components at minimum price premium for use with corrosive chemicals
• Hydraulically balanced seal-face technology for reduced power consumption
• Non-shaft-fretting sleeve elastomer and positive set screw shaft drive
• Independant seal face design to enhance safe containment of process fluid in the event of damage to any individual sealing element
• Multiple spring seal face loading
• Sizes available from 1.125" to 5.000" (28mm - 125mm) in standard and ANSI Plus gland formats

Directed Barrier Fluid Circulation

Removing the heat at the inboard faces is critical for any double mechanical seal. The CDFI™ / CDFC™ directed barrier fluid flow path achieves effective heat removal at both sets of seal faces.

Bi-directional Barrier Fluid Circulation

Developed using the highly efficient patented DMSF™ pumping ring the CDFI™ will effectively and reliably circulate barrier fluid irrespective of the direction of shaft rotation.

Alternatively, in applications which use an external barrier fluid circulation device, such as a PUMPPAC™, or where fluid convection is required, the CDFC™ may be offered.

Fits in Thin Radial Cross Sectional Spaces

Like the CDSA™, the CDFI™ / CDFC™ can be installed on equipment with radial cross sectional spaces as small as 0.312" (8mm). This is typical on some smaller sized process pumps.

Double end, multiple springs, balanced, independent rotary direction, still structure, clamp transmission and cartridge seal. The compensation components are assembled into the flange and the elastomers protects the springs from the mediums to make sure the springs will not be jammed. Multiple springs make the loads on the seal faces balanced. The second end seal at the sealant side accomplish the second sealing and prevent the leakage of the mediums and sealants. The sleeve are supported by the elastomers on the shaft and there is no axial movement and no damage to the shaft. The seal faces are close to the rotor and have high cooling and lubrication efficiency. The special design of this seal can work with counter pressure and there are diversion trenches inside the flange so that the cooling effects are evenly distributed. This seal has to work with flush system and the sealant pressure should be 0.1 - 0.3 MPa and flow rate should be 3 - 8 L per minute.