1. CASING COVER
Jacketed standard bore or large taper bore. Designed to provide the best environment for the specific
application and service conditions.

2. INTEGRAL ONE-PIECE CASING FLANGES
Flanges dimensioned according to ASME/ANSI B16.5 Class 300. Raised face flanges are standard. Ring type joint flanges (Class 300) are available as an option.

3. SEALING FLEXIBILITY
Choice of packed box or mechanical seal. Wide range of sealing arrangements (inside/outside, single/double, balanced/unbalanced, etc.) available to meet specific application and service conditions.

4. closed IMPELLER
Allows thermal expansion of the pump shaft at high pumping temperatures without interference of the impeller with the casing or the casing cover. Keyed to shaft with positive locking device. Replaceable wear rings optional.

5. SHAFT SLEEVE
Replaceable “hook type” shaft sleeves provided as
standard. Allows replacement of the wearing surface without having to replace the pump shaft or the bearings. The design allows the shaft sleeve to expand thermally, independent of the pump shaft. The standard sleeve material is 316SS. Sleeves of alloy construction, hard-facing, hardened chrome 11-13%, or ceramic coatings are available as options. Solid sleeveless shafts are also available.

6. Centerline CASING Support
The pump is supported at the horizontal centerline of the casing so that the thermal expansion of the casing will not affect the shaft alignment.

7. Casing Feet
Three different foot designs are available. The standard is a “yoke” design which allows the pump to fit on an ASME/ANSI B73.1 baseplate (as well as Dean’s “Economy” baseplates). The second “pedestal” design allows for mounting on API-type baseplates. The last design is a “water-cooled” pedestal design (as shown) used specifically for severe service conditions and applications.

8. Cooling Piping
Optional tubing (as shown) connects the “water-cooled” pedestal design with the casing cover jacket. Also available is optional tubing that connects the casing cover jacket with the finned tube oil cooler, and/or tubing that connects the cooled pedestal feet with the casing cover jacket.

9. HEAVY DUTY SHAFT AND BEARINGS
Carbon steel pump shaft (316SS optional) is designed for a maximum deflection of less than 0.002” (0.05mm) at the mechanical seal faces. The duplex mounted angular contact thrust bearings and the single row, deep groove, radial bearing are sized for a 2 year minimum life and a 10 year average life.

10. Standard labyrinth Seals (R4140 only)
Rugged bronze construction with Viton® o-rings. Available as an option on the R440, R450, and R480 pumps. Magnetic face seals are also an option for all pumps.

11. Lubrication Options
Oil bath lubrication is standard. The extra large oil reservoir is designed for cooler bearing operation. The bearing housing is set up to accommodate oil mist lubrication and grease lubrication as available options. The finned tube oil cooler is provided as standard, to directly cool the oil for lower
bearing temperature.

12. Fill Plug (R4140 only)
Easy access to fill plugs supplied on both sides of the bearing housing. Designed to minimize the possibility of overfilling. The R440, R450, and R480 pumps are filled through an automatic
(bottle) oiler.

13. One inch oil sight glass (R4140 only)
Allows for simple and easy monitoring of oil level and condition. The sight glass can be installed on either side of the bearing housing, in the field, for best location and ease of viewing. A combination automatic (bottle) oiler/sight glass is an available option on the R4140. The R440, R450, and R480 pumps are standard with an automatic (bottle) oiler.

14. Breather VENT
A filtered bearing housing breather is standard. An optional expansion chamber is available that is used with the optional magnetic oil seals when a sealed bearing housing is desired.

15. Pilot and Bolt Holes
The bearing housing of the R4140 is supplied with a pilot fit and four bolt holes at the motor end. The holes allow for mounting of the telescoping coupling guard. The pilot fit also allows for use of an optional “C-Face” motor support. The support permits self-aligning of the motor shaft to the pump shaft.

Experience
Dean Pump is recognized as the industry leader in the design and manufacture
of horizontal hot oil/hot water centrifugal process pumps used extensively in the
following industries: chemical and petrochemical plants, power plants, plastics, heat transfer OEMs, commercial (hospitals, universities, laboratories), government facilities, pharmaceutical, and food processing.
Dean Series R centrifugal process pumps are designed to insure long, continuous
service life at low cost. Each phase in the production of these pumps is meticulously monitored by an independent quality control department.

Pump Sizes
The Dean Series R pump is an end-suction, center line supported, back pull out design regularly available in 27 sizes and divided into four size classifications:

• the R4140 Series in 17 sizes
  
• the R440 Series in 3 sizes
  
• the R450 Series in 5 sizes
  
• the R480 Series in 2 sizes
  

Materials
Standard materials of construction include carbon steel and 316SS. (Standard Materials of Construction chart is available on Page 3).

Parts Interchangeability
The Series R provides the ultimate in standardization. With wide parts interchangeability among pump sizes, fewer parts are required for inventory. A complete stock of spare parts is readily available from Dean Pump or its network of stocking distributors, thereby reducing shipping time to a minimum.

Shaft Sealing
Dean Pump offers a broad line of mechanical seals and standard packing sets to solve the most difficult sealing problems. Jacketed standard bore (stuffing box), and large taper bore, seal chambers are available for specific applications.