HDDP-2053 - Heavy Duty Digester Paper Double Seal with Pumping Ring
The HDDP-2053 is a double cartridge mechanical seal with integral, bi-directional barrier fluid pumping ring with inboard wetted parts supplied in 316 S/S. The seal is designed for Digesters, Screens and Side Entry Agitators operating on Heavy Black Liquor applications as found in the Pulp & Paper industry sector.
The innovative stationary seal design is offered as a complete cartridge mechanical seal solution and is designed specifically for Plan 53, 53A, 53B and 53C system piping arrangements, however it can be used with Plan 52 and 54 systems.
This is an ideal solution for equipment that has a reserve mounting arrangement - where the seal mounting fasteners to the vessel are at the process media side of the seal.
Key Features:
- The Sleeve and Gland Insert is made from 316 S/S. It can be supplied in a variety of wear resistant materials to suit the arduous slurry application.
- Large Seal port orifices - 1/2" NPT Barrier Fluid In (BI) and Barrier Fluid Out (BO) orifices - ideal for Plan 54, 53 or 52.
- Barrier fluid is directed to the inboard faces via an integral deflector built into the seal gland. As the barrier outlet is over the outboard faces, effective heat removal occurs at both sets of seal faces
- Radial clearances between rotary and stationary components conforming to the best practice requirements of API682.
- Monolithic seal faces for improved high temperature performance
- Stationary seal design with self-aligning stationary seal face. Ideal for high speed applications.
- Multi-spring design with springs out of the process fluid.
- Highly efficient bi-direction barrier fluid pumping ring.
- Used in conjunction with the STANSEALS Plan 52, 53, 53A, 53B, 53C or 54 Seal Support Systems.
The HDDS-2053 is an innovative stationary seal, designed for heavy duty black liquor and slurry applications.
Applications:
- Pulp & Paper - Heavy Black Liquor (Typically operating at 120 Deg C, 6 Bar, 1600 rpm at 90mm Shaft Size) working on digesters, agitator and screen equipment
- Mining & Mineral Processing - Seals a variety of slurry media.
- Specialty Coatings & Adhesives – Prevents leaks in mixing and blending applications.
Safe Operating Limits:
This seal incorporates best practice features and innovation as detailed in our technical blogs and white papers.
** Apply "industry standard" Pressure, Speed and Temperature de-rating factors, by shaft size and application. The safe seal performance characteristics are typical characteristics for each variable in isolation. The individual upper limit values of each variable should NOT be used in multiple combinations of Speed, Pressure and Temperature. Contact our Technical Sales Department for further details.
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