Dean Pump Division

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1	CASING COVER Standard bore, jacketed, large taper bore, large cylindrical bore. Designed to provide the best environment for the specific application and service conditions.
2	INTEGRAL ONE-PIECE CASING FLANGES Flanges dimensioned according to ANSI/ASME B16.5 Class 150. Flat face flanges (Class 150) are standard. Raised face flanges (Class 150) 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	FULLY OPEN IMPELLER The fully open design provides smooth inlet passages for solids handling and stringy material, low NPSH, and minimum stuffing box pressure. The impeller design transmits low axial loads on the bearings.
5	SHAFT SLEEVE “Hook” type shaft sleeves are standard. Alloy, hard-facing, hardened chrome 11/13, or ceramic coatings are available as options. Solid shafts are also available.
6	ANSI/ASME B73.1 DIMENSIONAL CASING Permits maximum interchangeability of pumps with existing ANSI pumps eliminating any need for piping or foundation changes. Back pull-out design for ease of maintenance. Top centerline discharge for self-venting of casing. Casing drain/plug is a standard feature on Ductile Iron construction only.
7	HEAVY DUTY SHAFT AND BEARINGS Carbon steel shaft (316SS optional) designed for minimum deflection of less than 0.002” (0.05 mm) at the seal faces. Double row thrust bearings and single row radial bearings are sized for a 2 year minimum life and a 10 year average life. With minimized bearing spans and overhung lengths, Dean’s L3/D4 ratio is one of the best in the business.

8	STANDARD LABYRINTH SEALS (pH2110 & pH2140 only) Rugged bronze construction with Viton O-rings. These seals will ensure that the bearings are kept properly lubricated and uncontaminated throughout their project design life. Available as an option on the pH240/pH340/pH250.
9	EXTERNAL IMPELLER ADJUSTMENT No shimming required. Allows field setting of impeller-to-casing clearance. For the pH2110 and pH2140, impeller adjustment is accomplished by adjusting screws in the bearing end cover. External adjustment for the pH240/pH340/pH250 is accomplished by an adjusting sleeve and locknut.
10	LUBRICATION OPTIONS Oil bath lubrication is standard. Extra large oil reservoir designed for cooler bearing operation. Oil mist lubrication and grease lubrication are optional features. A finned tube oil cooler is also available (as an option) to directly cool oil for lower bearing temperature.
11	FILL PLUG (pH2110 & pH2140 only) Easy access to fill plugs supplied on both sides of the bearing housing. Designed to minimize the possibility of overfilling.
12	ONE INCH OIL SIGHT GLASS (pH2110 & pH2140 only) Allows for simple and easy monitoring of oil level and condition. Oil sight glass can be installed on either side of the bearing housing, in the field, for best location and ease of viewing. Combination automatic (bottle) oiler/sight glass also available.
13	RIGID BEARING HOUSING AND CASING FEET Designed to reduce the effect of pipe loads on pump and shaft alignment.

Experience
Dean Pump is recognized as an industry leader in the design and manufacture of horizontal centrifugal process pumps used extensively in the chemical and petrochemical industries, power plants, pulp and paper, mining, pharmaceutical and food processing industries.

When Dean Pump introduced the pH centrifugal process pump in 1958, the chemical processing industry recognized it as the model for the proposed ASA Standard Chemical Pump. Shortly thereafter, the Manufacturing Chemist Association (MCA) adopted, with minor changes, the service proven Dean pH pump as the American Voluntary Standard (AVS). Subsequently, the American National Standards Institute approved the AVS Specifications as national standard B123.1-1971. This standard was later revised and approved as ANSI/ASME B73.1M-1984. Dean Series pH pumps continue to meet or exceed the latest revised B73.1 standard.

Dean Series pH 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 pH pump is an end-suction back pull out design regularly available
in 22 sizes and divided into four size classifications:
• the pH2110 Series in 5 sizes
• the pH2140 Series in 11 sizes
• the pH240/pH340 Series in 4 sizes
• the pH250 Series in 2 sizes

Materials
Standard materials of construction include ductile iron, 316SS, CD4MCu, and Alloy 20. Additional higher metal alloys (Hastelloy B and C, Titanium, etc.) are available upon request. (Standard Materials of Construction chart is available).

Parts Interchangeability
The Series pH provides the ultimate in standardization of process pumps. 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.

All Series pH parts, with the exception of the casing (and in some sizes, the impeller), are interchangeable with the Series pHP Self-Priming Pump.

Shaft Sealing
Dean Pump offers a broad line of mechanical seals and standard packing sets to solve the most difficult sealing problems. This feature gives Series pH pumps the versatility to handle a wide range of chemical services. A variety of seal chambers such as standard bore, jacketed, large taper bore, and large cylindrical bore are available for specific applications.

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Dean Pump Division
6040 Guion Road
Indianapolis, IN 46254
Phone:317-293-2930
Fax: 317-297-7028
E-mail: info@deanpump.com